Science 30

Science 30

2008 and 2009 Released Diploma Examination Items

Released

Items

For further information, contact

Stan Bissell, Science 30 Team Leader, at 780-422-5730

[email protected],

Stacey Mabey, Science 30 Examiner, at 780-422-3337

[email protected], or

Deanna Shostak, Director of Diploma Programs, at 780-422-5160

[email protected], or

Provincial Assessment Sector: 780-427-0010.

To call toll-free from outside Edmonton, dial 310-0000.

The Alberta Education website is found at education.alberta.ca.

Contents

Introduction ...1

Additional Documents ...1

Science 30 Diploma Examination January 2008—Blueprint Summary ...2

Science 30 Diploma Examination June 2008—Blueprint Summary ...3

Science 30 Diploma Examination January 2009—Blueprint Summary ...4

Science 30 Diploma Examination January 2008—Released Items ...6

Science 30 Diploma Examination June 2008—Released Items ...20

Science 30 Diploma Examination January 2009—Released Items ...33

This blank page needs to stay

Introduction

The questions presented in this booklet are from the January 2008, June 2008, and January 2009 Science 30 Diploma Examinations. This material, along with the program of studies and the Science 30 Information Bulletin, can assist you with instructional programming.

On past Science 30 Diploma Examinations, groups of questions were arranged in scenarios or storylines. These scenarios were introduced using one or two sentences enclosed in a grey box and many questions included content intended to make them flow with the storyline. Because the scenario format is no longer used on Science 30 diploma examinations, the scenario content has been removed from the questions presented in this booklet.

These examination items are released by the Provincial Assessment Sector. They may be used by the classroom teacher as an examination, a quiz, or a review for students.

Additional Documents

The Provincial Assessment Sector supports the instruction of Science 30 in classrooms with the following documents available online:

• School Reports and Instructional Group Reports available at https://phoenix.edc.gov.ab.ca/login

Detailed statistical information is provided on provincial, group, and individual student performance on the entire examination.

• Science 30 Information Bulletin available at education.alberta.ca

Contains information about the diploma examinations for the upcoming school year, sample questions, assessment samples for classroom use with student exemplars, and scoring criteria.

• Science 30 Previous Examinations

The August 2015 Diploma Examination is also released in PDF format and is on Quest A+.

https://questaplus.alberta.ca

Science 30 Diploma Examination January 2008—

Blueprint Summary

Key: MC—Multiple Choice; NR—Numerical Response

Diff.* Key K STS Skill

MC7 0.554 C A2.3k

MC8 0.730 D A2.2k

MC9 0.754 C B2.1k

MC10 0.518 C A1.3k

MC11 0.762 B A3.2k A3.2s

MC13 0.672 C B2.4k B2.1sts

MC14 0.901 C A3.8k

MC15 0.789 D C2.2k

MC16 0.751 A B1.9k

MC22 0.747 C B1.1k

MC23 0.730 B B1.2s

MC24 0.728 C B1.2s

MC25 0.821 D B3.2s

MC26 0.906 D B3.2s

MC29 0.627 D C2.2k

MC32 0.703 B D2.5k

MC36 0.907 A C1.6k C1.2s

MC37 0.661 B C1.6k C1.3s

NR1 0.323 2341 A3.9k

NR7 0.638 2387 C2.1s

NR8 0.913 2413 B1.9k

NR10 0.444 135 or 1.35 D2.7k D2.3s

NR11 0.540 54.8 C1.6k C1.3s

Science 30 Diploma Examination June 2008—

Blueprint Summary

Key: MC—Multiple Choice; NR—Numerical Response

Diff.* Key K STS Skill

MC 1 0.723 B A2.2k

MC 3 0.709 B A2.3k

MC 7 0.783 C A3.4k

MC 8 0.788 C B2.6k B2.1sts

MC 11 0.325 B B1.1k

MC 12 0.679 D B1.2s

MC 23 0.709 B C2.1k

MC 24 0.488 D C2.4k

MC 26 0.553 B C1.7k C1.3s

MC 28 0.481 C C1.5k

MC 29 0.697 C C1.6k C1.2s

MC 30 0.508 C C1.9k

MC 38 0.635 B C1.11k C1.2s

MC 39 0.787 B C1.11k C1.2s

NR 1 0.617 4.47 B1.3k B1.3s

NR 2 0.536 2431 A1.3s

NR 4 0.709 1267 (any order) C2.2k

NR 6 0.854 4123 C1.1s

NR 7 0.748 49.6 C1.6k C1.3s

NR 8 0.704 3.70 or 3.7 C1.4k C1.3s

NR 10 0.641 3412 B2.5k

NR 11 0.905 782 C1.6k C1.3s

Science 30 Diploma Examination January 2009—

Blueprint Summary

Key: MC—Multiple Choice; NR—Numerical Response

Diff.* Key K STS Skill

MC 1 0.467 B A3.2k A3.3s

MC 2 0.560 D A3.2k A3.3s

MC 3 0.841 D A3.1k

MC 4 0.568 C A3.2k

MC 5 0.759 C A1.4k

MC 6 0.580 C A1.3k

MC 7 0.691 C A1.2s

MC 8 0.667 A A1.4k

MC 13 0.809 B C2.6k C2.1s

MC 14 0.590 B C2.4k

MC 15 0.386 D C1.6k C1.2s

MC 17 0.801 C C1.6k C1.3s

MC 18 0.576 A C2.2k

MC 23 0.810 A B1.8k B1.2sts

MC 25 0.727 A B2.3k B2.2sts

MC 27 0.438 D C2.1k C2.1s

MC 28 0.644 C B2.1k

MC 29 0.398 D C1.6k C1.3s

MC 31 0.686 A C1.3k

MC 32 0.380 C C1.3k

MC 33 0.682 C D2.6k

MC 34 0.774 A C2.10k

MC 35 0.619 D C2.9k

Diff.* Key K STS Skill

NR 1 0.444 4312, 4322 A3.2k A3.2s

NR 2 0.157 1321 A3.1k

NR 4 0.739 1342 C1.2k C1.2s

NR 6 0.266 2.66, 2.7 D2.1k D2.3s

NR 7 0.697 115 C1.9k C1.3s

NR 8 0.768 3231 B1.2s

NR 9 0.598 2314 B1.2s

NR 10 0.777 2413, 2431 B1.1s

NR 11 0.257 7.05 C1.4k C1.3s

NR 12 0.489 1210 D2.5k

*Difficulty—proportion of students answering the question correctly

Science 30 Diploma Examination January 2009—Blueprint Summary

—continued

Key: MC—Multiple Choice; NR—Numerical Response

Science 30 Diploma Examination January 2008—

Released Items

Use the following information to answer numerical-response question 1.

Steps in Preparing Bacteria to Produce Insulin

1 Bacteria containing the recombinant DNA is cultured and grown.

2 The insulin-producing gene is obtained from pigs.

3 DNA from bacteria is cut.

4 The insulin-producing gene is inserted into the bacterial DNA.

Numerical Response

The order in which the steps listed above should be performed in order for bacteria to produce insulin is _____, _____, _____, and _____.

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

1.

7. When a person is infected with a virus, the immune system components that first detect the presence of the virus are the

A. B cells B. antigens C. macrophages D. helper T cells

8. Which of the following defence system components is not considered part of the body’s first line of defence against infection by pathogens?

A. Tears

B. Skin cells

C. Stomach acid

D. Helper T cells

Use the following information to answer question 9.

Phenol is a chemical that is involved in the manufacture of some pesticides.

Phenol

9. Phenol has the same functional group as A. an ester

B. an alkene C. an alcohol D. a carboxylic acid

10. A pesticide that comes in contact with a person’s skin can be first absorbed into the person’s bloodstream by

A. a vein

B. a venule

C. a capillary

D. an arteriole

Use the following information to answer question 11.

Cystic fibrosis is an autosomal recessive genetic disorder. People with the disorder produce abnormal amounts of sticky mucus in their lungs. Parents who are unaffected by cystic fibrosis can have children who are affected.

Pedigree Chart for Cystic Fibrosis

The alleles associated with cystic fibrosis are N and n.

11. Which of the following rows identifies the genotypes of individuals I‑1 and I‑2 and the phenotype of individual II‑2 shown in the pedigree chart above?

Row Genotype of

Individual I‑1 Genotype of

Individual I‑2 Phenotype of Individual II‑2

A. Nn NN Unaffected

B. Nn Nn Affected by cystic fibrosis

C. NN nn Affected by cystic fibrosis

D. Nn Nn Unaffected

Use the following information to answer questions 13 and 14.

Some studies suggest that increased exposure to ultraviolet (UV) radiation is causing deformities in some amphibians.

13. The increase in the intensity of UV radiation reaching Earth’s surface has been caused by the release of i  , which affects UV intensity by ii .

The statement above is completed by the information in row

Row i ii

A. CO

depleting the ozone layer B. CO

trapping thermal energy C. CFCs depleting the ozone layer D. CFCs trapping thermal energy

14. UV radiation causes a change to the sequence of nitrogen bases in the DNA of amphibians that results in

A. mitosis

B. meiosis

C. mutation

D. segregation

Use the following information to answer question 15 and numerical-response question 7.

Chemical Reaction of Ozone

O

(g) + electromagnetic radiation → O

(g) + O(g)

(1.26 × 10

Hz)

15. The form of electromagnetic radiation that brings about the change to the ozone molecule in the chemical reaction represented above is

A. radio wave B. gamma ray C. infrared radiation D. ultraviolet radiation

Numerical Response

Electromagnetic radiation with a frequency of 1.26 × 10

Hz has a wavelength, expressed in scientific notation, of a.bc × 10

m. The values of a, b, c, and d are _____, _____, _____, and _____.

a b c d

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

7.

Use the following information to answer question 16.

Some Changes Due to Pollution

I Increased concentration of heavy metals in water II Decreased thickness of the ozone layer

III Increased corrosion of buildings and automobiles IV Increased numbers of plant species

V Increased soil pH

16. Which of the changes listed above are caused by acid deposition?

A. I and III

B. I and IV

C. II and III

D. II and IV

Use the following information to answer numerical-response question 8.

The Impact of Acidity on Aquatic Life pH

Species 6.5 6.0 5.5 5.0 4.5 4.0 3.5

1 Salamander       

2 Water beetle       

3 Freshwater clam       

4 Yellow perch       

 = aquatic life is alive

 = aquatic life dies

Numerical Response

Listed in order from the species that is least sensitive to an acidic environment to the species that is most sensitive, the species listed above are numbered __________ , __________ , __________ , and __________ . least

sensitive most

sensitive

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

8.

Use the following information to answer question 24.

Tap water in Calgary has a pH between 7.6 and 8.4, depending on the season.

24. If the indicators bromothymol blue and thymolphthalein are used to determine the pH range of the tap water in Calgary, their colours would be, respectively,

A. blue and blue B. yellow and blue C. blue and colourless D. yellow and colourless

22. During a titration of HCl(aq) with NaOH(aq), the NaOH(aq) behaves as i and the HCl(aq) behaves as ii .

The statement above is completed by the information in row

Row i ii

A. an acid a base

B. an acid an acid

C. a base an acid

D. a base a base

23. Which of the following procedures best ensures that the results obtained from a titration experiment are reliable?

A. Drying the sample container between trials

B. Performing a minimum of three trials

C. Preparing new solutions for each trial

D. Using a variety of indicators

Use the following information to answer questions 25 and 26.

Experiences with Selected Environmental Tax Systems

Policy, Country, Year Initiated Effect

Toxic waste tax, Germany, 1991 Toxic waste production fell more than 15% in three years

Water pollution taxes, Netherlands, 1970 Main factor behind 72–99% drop in industrial discharges of heavy metals into regionally managed waters

Sulfur oxide tax, Sweden, 1991 One-third of a 40% emissions drop during 1989–95 attributed to tax

Ozone-depleting substance tax,

United States, 1990 Smoothing and enforcing phase-outs of ozone-depleting substances

Carbon dioxide tax, Norway, 1991 Emissions appear to be 3–4% lower than they would be without the tax

25. The taxes described in the table above represent government attempts to A. support the energy industry

B. increase fossil fuel consumption C. tax renewable energy production D. encourage sustainable development

26. A conclusion that can be drawn from the table is that A. taxes have no effect on environmental damage B. technology cannot reduce environmental damage C. the environmental benefits do not justify more taxes

D. increasing the cost to polluters reduces environmental damage

Use the following information to answer question 29.

Colours Emitted by Metallic Elements when Heated Metallic Element Colour of Light Produced

Copper Blue-green

Barium Yellow-green

Sodium Yellow-orange

Strontium Red

29. The metallic element listed above that emits the colour of light with the longest wavelength is

A. copper

B. barium

C. sodium

D. strontium

Numerical Response

If 1.50 kg of uranium is converted into energy in a nuclear reactor, then the energy released by the reactor, expressed in scientific notation, will be a.bc × 10

J. The values of a, b, and c are _____, _____, and _____.

a b c

(Record all three digits of your answer in the numerical-response section on the answer sheet.)

10.

Use the following information to answer question 32.

Nuclear reactors such as the CANDU reactor use nuclear fission to produce energy.

32. The change to matter in nuclear fission reactions involves

A. combining nuclei that have small masses to make a nucleus that has a large mass

B. splitting a nucleus that has a large mass to make nuclei that have small masses C. emitting a helium atom from the nucleus of an element

D. emitting an electron from the nucleus of an element

36. A toaster, clock, and coffeemaker are wired in parallel. Which of the following diagrams illustrates this circuit?

Numerical Response

If 6.00 × 10

W of electrical power is required to operate a machine with a total resistance of 2.00 Ω, then the current that flows within the machine is __________ A.

(Record your three‑digit answer in the numerical-response section on the answer sheet.)

11.

37. An electrostatic painting gun has a resistance of 1.0 × 10

Ω. If the voltage in this circuit is 120 000 V, then the current is

A. 8.3 × 10

A

B. 1.2 × 10

A

C. 8.3 × 10

A

D. 1.2 × 10

A

Use the following information to answer question 1 and numerical-response question 1.

Skin contains sebaceous glands that produce an oil called sebum, which has a low pH.

Cross‑Section of Skin

1. The low pH of sebum aids in the A. clotting of blood

B. prevention of infection C. process of skin-cell mitosis

D. transport of materials into the body

Science 30 Diploma Examination June 2008—

Released Items

3. Blood components that are capable of engulfing and destroying bacteria are called A. antibodies

B. macrophages C. helper T cells D. suppressor T cells

Use the following information to answer numerical-response question 2.

An oral prescription drug that is used to control acne passes from the digestive system into the bloodstream and eventually into the heart.

Structures of the Heart 1 Pulmonary artery 2 Vena cava

3 Right ventricle 4 Right atrium

Numerical Response

After leaving the digestive system, the order in which an oral prescription drug in the bloodstream passes through the structures of the heart numbered above is _____, _____, _____, and _____.

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

2.

Use the following information to answer numerical-response question 4.

Mosquitoes can sense electromagnetic radiation (EMR) that has wavelengths ranging from 10

 m to 10

 m.

Types of EMR 1 Radio 2 Microwave 3 Infrared 4 Visible 5 Ultraviolet 6 X-ray

7 Gamma

Numerical Response

The types of EMR numbered above that mosquitoes cannot detect are _____, _____, _____, and _____.

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

4.

7. If a nitrogen base sequence on a particular strand of DNA is AAG, then the sequence on the complementary strand of DNA is

A. GGC

B. CCT

C. TTC

D. TTA

Use the following information to answer question 8.

Polychlorinated biphenyls (PCBs) have been discovered in bodies of water in the Arctic.

PCBs are known to accumulate in the tissues of organisms.

8. Which of the following rows identifies the expected relative concentrations of PCBs in the tissues of three of the organisms shown in the food web above?

Row Low PCB

Concentrations Moderate PCB

Concentrations High PCB Concentrations

A. Beluga whale Arctic cod Polar bear

B. Arctic cod Zooplankton Phytoplankton

C. Arctic cod Harbour seal Polar bear

D. Beluga whale Thick-billed murre Walrus

Use the following information to answer question 11.

A Reaction That Occurs in Alberta Lakes CO

(aq) + H

O

(aq) H

O(l) + HCO

(aq)

11. In the equation above, two substances that act as bases by accepting a proton are A. H

O

(aq) and H

O(l)

B. CO

(aq) and H

O(l) C. H

O

(aq) and HCO

(aq) D. CO

(aq) and HCO

(aq)

Use the following information to answer question 12.

A lake on eastern Baffin Island has a pH of 6.25.

12. If the pH indicator thymol blue is added to a sample of water from the lake, then the colour of the resulting solution will be

A. red B. blue C. orange D. yellow

Use the following information to answer question 23.

Electromagnetic Waves

23. When compared with wave II, wave I has a i wavelength and has ii energy.

The statement above is completed by the information in row

Row i ii

A. longer higher

B. longer lower

C. shorter higher

D. shorter lower

Use the following information to answer question 24.

To reduce exposure to harmful electromagnetic radiation (EMR), an astronaut wears a space helmet with a visor that has a protective coating. Waves of EMR that pass through this coating vibrate in a single plane.

24. The protective coating on the visor causes EMR to be

26. If a particular engine can generate 150 MW of power, then the energy the engine can produce in one day is

A. 3.60 × 10

J B. 1.30 × 10

J C. 5.40 × 10

J D. 2.25 × 10

J

Use the following information to answer question 28.

Scientists have theorized that a long conducting wire attached to the International Space Station would generate electrical energy.

Space Station with Conducting Wire Attached

28. To generate electricity using a long conducting wire, the space station must be i relative to a ii field.

The statement above is completed by the information in row

Row i ii

A. stationary magnetic

B. stationary gravitational

C. moving magnetic

Use the following information to answer question 29 and numerical-response questions 6 and 7.

Electrical energy produced at a research facility is stored in a battery that is connected to a simple circuit, as shown below.

Simple Circuit

29. In the circuit shown above, the ammeter is connected in i and the voltmeter is connected in ii .

The statement above is completed by the information in row

Row i ii

A. parallel parallel

B. parallel series

C. series parallel

D. series series

Numerical Response

Match each of the parts of the circuit numbered above with its purpose, as given below.

Part: __________ __________ __________ __________

Purpose: Converts

energy Measures

current Interrupts

current Measures

voltage

6.

Use the following information to answer numerical-response question 8.

Comparison of Earth and Mars

Mass Radius

Earth 5.98 × 10

kg 6.37 × 10

m Mars 6.42 × 10

kg 3.40 × 10

m

Numerical Response

Given the information above, the magnitude of the gravitational field strength experienced by an object located on the surface of Mars is __________ N/kg.

(Record your three‑digit answer in the numerical-response section on the answer sheet.)

8.

30. A transformer is used to change

A. resistance in an AC circuit

B. resistance in a DC circuit

C. voltage in an AC circuit

D. voltage in a DC circuit

Use the following information to answer numerical-response question 10.

Products of the Internal Combustion Engine 1 Thermal energy

2 Kinetic energy 3 CO

(g)

4 NO

(g)

Numerical Response

Match each product listed above with its description given below. Use each number only once.

Product: __________ __________ __________ __________

Description:

Component of photochemical smog

Waste output

energy Useful output energy

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

10.

Use the following information to answer questions 38 and 39.

Mobile power plants, such as the one illustrated below, are used in remote locations.

Flowing water turns a turbine, which then moves a coil of wire through a magnetic field.

Mobile Power Plant

39. As the rotating wire coil in the illustration on the previous page moves between the permanent magnets, both i field and ii field are produced.

The statement above is completed by the information in row

Row i ii

A. a magnetic a gravitational B. a magnetic an electric C. an emission a gravitational D. an emission an electric

38. The components that connect to the spinning turbine in the illustration on the previous page form a

A. transformer

B. generator

C. ammeter

D. motor

Use the following information to answer numerical-response question 12.

It is estimated that the submerged turbines in a tidal power-generation system could convert a potential power of 24.0 GW into 3.63 GW of electrical power.

Numerical Response

The estimated efficiency of the submerged turbines in the tidal power-generation system is __________%.

(Record your three‑digit answer in the numerical-response section on the answer sheet.)

12.

Numerical Response

If a mobile power plant is capable of producing electricity with a voltage of 230 V and a current of 3.40 A, then the power produced is __________ W.

(Record your three‑digit answer in the numerical-response section on the answer sheet.)

11.

Use the following information to answer numerical-response question 1 and questions 1 and 2.

Huntington disease (HD) is a lethal human disorder caused by a dominant allele, H, located on the end of chromosome 4. This allele is autosomal (not sex-linked).

Some Pedigrees for Huntington Disease

H = Huntington disease h = Unaffected

Numerical Response

Match each of the pedigrees numbered above with the genotypes of the parents listed below.

1.

Science 30 Diploma Examination January 2009—

Released Items

Use the following additional information to answer questions 1 and 2.

One parent is heterozygous and the other is homozygous dominant for the Huntington disease allele.

1. The possible genotypes of children born to the parents described above are A. Hh and hh only

B. HH and Hh only C. HH and hh only D. HH, Hh, and hh

2. The probability that the first child of the parents described above will receive the dominant allele is

A. 25%

B. 50%

C. 75%

D. 100%

Use the following information to answer numerical-response question 2.

Some Cell Processes 1 Meiosis 2 Mitosis 3 Fertilization

Numerical Response

Match a cell process numbered above with the descriptions of processes given below.

(Processes may be used more than once.)

Process: __________ __________ __________ __________

Description: Forms

gametes Combines genetic information from two parents

Responsible for growth and development

Divides genetic information into half the original amount

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

2.

Use the following information to answer question 3.

A Random Display of the Stages of Mitosis

3. The correct order for the stages of mitosis shown above is A. I, II, III, IV

B. I, III, IV, II

C. III, I, II, IV

D. III, I, IV, II

Use the following information to answer question 4.

The symptoms of many lethal diseases appear before a person who has the disease reaches adulthood.

4. A likely explanation for why dominant lethal alleles rarely occur in populations is that many individuals who have a dominant lethal allele

A. pass on only the lethal allele to their offspring B. pass on only the non-lethal allele to their offspring

C. do not survive to reproduce, so the lethal allele is not passed on D. do not survive to reproduce, so the non-lethal allele is not passed on

5. Which of the following molecules is responsible for transporting oxygen in the bloodstream?

A. Adenine B. An antibody C. Hemoglobin D. Deoxyribose

Use the following information to answer question 6.

Carbon monoxide prevents oxygen from binding to the molecule that is responsible for transporting oxygen in the bloodstream.

6. A person suffering from carbon monoxide poisoning experiences

A. a decrease in the rate of oxygen exchange in the arteries of the brain

B. an increase in the rate of oxygen exchange in the arteries of the brain

7. A person has a blood pressure of 145/95. The number 145 represents the A. systolic pressure, which occurs when the ventricles relax

B. diastolic pressure, which occurs when the ventricles relax C. systolic pressure, which occurs when the ventricles contract D. diastolic pressure, which occurs when the ventricles contract

8. Which of the following blood components is involved in stopping a nosebleed?

A. Platelets

B. Antibodies

C. Red blood cells

D. White blood cells

Use the following information to answer numerical-response question 4.

Some Electric and Magnetic Fields

Numerical Response

Match each of the numbers in the diagrams above with the corresponding descriptor listed below.

South pole __________ (Record in the first column)

Negatively charged particle __________ (Record in the second column)

North pole __________ (Record in the third column)

Positively charged particle __________ (Record in the fourth column) (Record your answer in the numerical-response section on the answer sheet.)

4.

Use the following information to answer question 13.

In ultrasound technology, sound waves with a frequency of 3.02 × 10

 Hz and a wavelength of 5.13 × 10

 m pass through the body. Reflected waves are analyzed by a computer to produce an image.

13. The speed of the sound waves passing through the body is A. 1.70 × 10

m/s

B. 1.55 × 10

m/s

C. 3.00 × 10

m/s

D. 5.89 × 10

m/s

Use the following information to answer question 14.

A window in a farmhouse provides passive solar heating.

Sunlight Striking Glass

14. In the diagram above, the light ray that has been reflected is A. I

B. II

C. III

D. IV

15. Which of the following diagrams represents the circuit with the least total resistance?

Use the following information to answer numerical-response question 6.

Combustion of Butane C

H

(g) + 13 ___

2 O

(g) → 4 CO

(g) + 5 H

O(g) Numerical Response

For each mole of butane combusted, the energy released is __________ × 10

kJ.

(Record your three‑digit answer in the numerical-response section on the answer sheet.)

6.

Use the following information to answer numerical-response question 7.

Backup power for a farm is provided by a 24 000 V distribution line.

Numerical Response

The primary coil of the transformer has 11 500 turns. The number of turns that the secondary coil must have in order to deliver 240 V to the farm is __________ turns.

(Record all three digits of your answer in the numerical-response section on the answer sheet.)

7.

17. The current flowing through a 1 875 W water pump that is plugged into a 110 V electrical outlet is

A. 5.87 × 10

A B. 4.13 A

C. 17.0 A

D. 2.06 × 10

A

Use the following information to answer numerical-response question 8.

A different indicator is added to each of four different samples of recycled water with a pH of 5.6.

Colours of Resulting Solutions 1 Colourless

2 Yellow 3 Blue

Numerical Response

Match the colours of the resulting solutions numbered above with the indicator that was added to the sample to produce that colour. (You may use a number more than once.) Methyl violet __________ (Record in the first column)

Bromothymol blue __________ (Record in the second column)

Bromocresol green __________ (Record in the third column)

Phenolphthalein __________

8.

Use the following information to answer question 18.

Traditionally, barns have been painted with a red paint that gets its pigment from rusted scrap metal.

18. Which of the following wavelengths of light is reflected by this pigment?

A. 700 nm B. 600 nm C. 500 nm D. 400 nm

Use the following information to answer numerical-response question 9.

A titration is performed in order to find the hydronium ion concentration [H

O

(aq)] of an acidic sample solution.

Titration Steps

1 Record the total volume of NaOH(aq) solution used to turn the sample solution green.

2 Place 10.0 mL of the acidic sample solution into a flask and add three drops of bromothymol blue.

3 Slowly drip the 0.10 mol/L NaOH(aq) solution from a burette into the flask.

4 Calculate the concentration of the acid.

Numerical Response

When the titration steps given above are listed in the order in which they are performed, their order is _____, _____, _____, and _____.

first last

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

9.

Use the following information to answer numerical-response question 10.

To determine the effect of acid rain on corn plants, an acid solution with a pH of 4.3 was used to water a plot of two-month-old corn plants. More corn plants were grown on another plot under similar conditions but were watered with distilled water that had a pH of 7.0.

Experimental Variables 1 Type of soil

2 Substance used to water plants 3 Light exposure

4 Growth of plant

Numerical Response

Match each of the experimental conditions numbered above with one of the variables given below.

Conditions: __________ __________ __________ __________

Variables: Manipulated

variable Responding

variable Controlled

variable Controlled variable

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

10.

23. A major environmental issue associated with nitrogen compounds produced by hot internal-combustion engines is

A. acid deposition B. global warming

C. ultraviolet ray blockage

D. biomagnification in food chains

25. Which of the following structural formulas represents a compound that is responsible for the depletion of the ozone layer?

Use the following information to answer question 27.

Some sunscreens contain para-amino benzoic acid (PABA).

Absorption Spectrum of PABA

27. The PABA in the sunscreen absorbs radiation that has a frequency of approximately A. 8.8 × 10

Hz

B. 80 Hz

C. 8.0 × 10

Hz

D. 1.1 × 10

Hz

28. Which of the following structural formulas represents methanoic acid?

Use the following information to answer numerical-response question 11 and question 29.

One futuristic scheme to produce power on a large scale proposes placing giant solar panels into Earth’s orbit, where energy generated from sunlight would be converted to microwaves and beamed to antennas on Earth for reconversion to electric power. To produce as much power as five large nuclear power plants (5.00 × 10

W total), several square kilometres of solar panels would have to be assembled in orbit. An Earth-based antenna that is 8 km in diameter would be required to receive microwaves from the solar modules, which would be positioned 7.52 × 10

m away from Earth’s centre.

Numerical Response

The magnitude of Earth’s gravitational field at the location of the orbiting solar panels is __________ N/kg.

(Record your three‑digit answer in the numerical-response section on the answer sheet.)

29. The energy that the solar panels could produce in one day is A. 1.39 × 10

J

B. 7.20 × 10

J

C. 1.80 × 10

J

D. 4.32 × 10

J

11.

Use the following information to answer numerical-response question 12.

A Reaction Occurring in a Star 2

a H + b 1 H → 3 2 He + c d n Numerical Response

In order to balance the equation above, the values of a, b, c, and d are _____, _____, _____, and _____.

a b c d

(Record all four digits of your answer in the numerical-response section on the answer sheet.)

12.

31. A main difference between gravitational fields and electric fields is that

A. gravitational field strength depends on mass, but electric field strength does not B. gravitational fields are both repulsive and attractive, but electric fields are neither C. the constant for gravitational fields is very large compared with the constant for

electric fields

D. gravitational field strength depends on the distance between objects but electric field

strength does not

Use the following information to answer question 33.

Polonium is used as an energy source in some satellites when it undergoes the reaction shown below.

210

84

Po →

Pb +

He

33. The type of radioactive decay that results when

Po decays to form

Pb is A. gamma

B. fusion

32. Which of the following graphs depicts the relationship between gravitational field strength and the distance between an orbiting telescope and Earth?

35. When electromagnetic radiation from a star passes through a i after passing through a relatively cool gas, a ii spectrum can be observed.

The statement above is completed by the information in row

Row i ii

A. telescope bright-line emission

B. telescope dark-line absorption

C. spectroscope bright-line emission D. spectroscope dark-line absorption

34. Which of the following sequences of colours represents the increasing temperature of stars?

A. Red, orange, yellow, blue B. Red, yellow, orange, blue C. Yellow, red, orange, blue

D. Yellow, orange, red, blue

36. A concern associated with acid rain is that it results in an increase in A. ozone depletion

B. global temperatures

C. ultraviolet radiation

D. heavy-metal leaching

Use the following information to answer question 38.

Sequence of Energy Conversions

Gravitational potential → Kinetic → Electrical

38. Which of the following types of power plant produces electricity using the sequence of energy conversions shown above?

A. Photovoltaic B. Geothermal C. Nuclear D. Tidal

39. Which of the following fuels provides the greatest quantity of energy per gram?

A. Low-sulfur coal B. Distilled ethanol C. Enriched uranium D. Sweetened natural gas

40. In a CANDU nuclear reactor, energy is provided by a i reaction in which ii .

The statement above is completed by the information in row

Row i ii

A. fusion small nuclei are joined

B. fusion large nuclei are split

C. fission small nuclei are joined