Grade 10 Academic Science Practice Exam
Lorne Park Secondary School 30% of Final Grade
1.5 hours
Full Name: ____________________
Part A: Multiple Choice 30 marks for KNOWLEDGE 20 minutes Part B: Written Response 20 marks for COMMUNICATION 15 minutes Part C: Short Answer 40 marks for APPLICATION 40 minutes Part D: Other 20 marks for INQUIRY 15 minutes
Part A: Knowledge [1 mark each: 30 Marks]
Identify the choice that best completes the statement or answers the question on the scantron provided.
1. A layer of tall, closely packed cells containing chloroplasts, just below the upper surface of a leaf, is called the:
a. palisade layer b. spongy mesophyll
c. vascular bundles d. Cuticle
2. There are no natural sources of a. carbon dioxide
b. methane
c. chlorofluorocarbons d. nitrous oxide
3. A single displacement involves a. an element and a compound as reactants b. two compounds as reactants
c. two compounds as products
d. two elements as products and reactants
4. Water’s index of refraction is 1.33. The speed of light in water is
a. 2.26 108 m/s b. 1.33 108 m/s c. 4.43 108 m/s d. 3.24 108 m/s
5. An object is placed at C. What kind of image will this situation produce?
a. real, upright, same size as the original b. real, inverted, smaller the original
c. real, inverted, same size as the original d. virtual, upright, same size as the original
6. What would you do to make this diagram accurate?
a. Make the light ray bend at a 90º angle
b. Make the light ray nearly straight, bending slightly away from the normal. c. Make the light ray bend toward the normal rather than away from it d. The diagram is fine the way it is
7. Which of the following statements is not true about what happens to radiation from the Sun once it reaches Earth?
a. A portion of it is reflected back to space by the clouds.
b. Over half of it is absorbed by Earth’s surface.
c. Nearly half of it transmits through Earth. d. A portion of it is absorbed by gases in the
atmosphere.
8. The tongue, esophagus, and intestines of a human would all be considered parts of a(n)
9. How do you know that the following equation is not balanced? K Br2 KBr
a. There are more K atoms on the left side than the right side. b. There are not enough Br atoms on the left side.
c. There are more Br atoms on the left side than the right side. d. The equation is balanced.
10. Natural sources of atmospheric carbon dioxide include all of the following, except a. volcanic eruptions
b. burning of organic matter
c. photosynthesis d. cellular respiration
11. What is the correct chemical formula for the compound copper(II) fluoride?
a. CuF2 b. Cu2F c. CuF d. Cu2F2
12. Choose the best description for the weather on a typical summer day in Ontario. a. high of 30 C, partly cloudy
b. high of 5 C, mostly sunny, 90 % probability of precipitation, wind from the west at 65 km/h, and relative humidity of 10 %
c. high of 30 C, mostly sunny, 20 % probability of precipitation, wind from the west at 22 km/h, and relative humidity of 35 %
d. sunny, wind from the west at 20 km/h, and a relative humidity of 30 %
13. Choose the correct word equation for Zn CuSO4 ZnSO4 Cu energy
a. reactant reactant energy
b. zinc copper sulfate zinc sulfate copper energy c. zinc copper zinc sulfate copper sulfate energy d. zinc sulfate copper sulfate zinc copper energy
14. During which phase of a cell cycle does metaphase, shown below, occur?
a. interphase b. mitosis c. cytokinesis d. prophase
15. The cell theory states that all of the following are true, except a. All living things are made up of one or more cells and their products. b. The cell is the simplest unit that can carry out all life processes. c. All organisms are made up of many cells.
d. All cells come from other cells; they do not come from non-living matter.
16. What would the chemical formula be for hydrobromic acid?
a. HCl(aq) b. HBr(aq) c. H2Br d. H3Br2
17. The ionic compound produced in the neutralization of potassium hydroxide with phosphoric acid is a. sodium hydroxide
b. hydrochloric acid
c. carbonic acid d. potassium phosphate
18. An object 16.8 cm tall is placed in front of a converging lens. A real image, 46 cm tall, is formed on the other side of the lens. What is the magnification of the lens?
a. 2.7 b. –2.7 c. 3.7 d. –3.7
19. Greenhouse gases are produced by the combustion of fossil fuels from a. energy production
b. transportation
c. industry d. all of the above
20. All of the following are tissue systems in plants, except a. dermal tissue system
b. connective tissue system
c. vascular tissue system d. ground tissue system
a. carbon dioxide, methane, chlorofluorocarbons b. carbon dioxide, ozone, chlorofluorocarbons c. methane, chlorofluorocarbons, nitrogen d. methane, nitrous oxide, ozone
22. What is a normal line?
a. A line that is perpendicular to the angle of incidence, b. A line that is perpendicular to the angle of reflection. c. A line that is perpendicular to the reflecting surface. d. A line that is parallel to the angle of incidence.
23. Specialized cells that use a lot of energy, such as muscle cells, have a lot of
a. Golgi bodies b. mitochondria c. vacuoles d. nuclei
24. Element X has one electron in its outer orbit and element Y has six electrons in its outer orbit. What is the correct formula for the compound formed by X and Y?
a. XY b. XY6 c. XY2 d. X2Y
25. An object is placed a greater distance than 2 from a converging lens produces a real image that is smaller, inverted, and located
a. beyond 2F b. between F and 2F c. at F
d. closer than F to the lens
26. Which organelle is present in the cells of a tree but not present in the cells of a human? a. nucleus
b. vacuole
c. endoplasmic reticulum d. chloroplast
27. Which element would have atoms with the same number of outer electrons as carbon atoms?
a. silicon b. boron c. nitrogen d. neon
28. Which of the following does not make up part of Earth’s climate system? a. the hydrosphere
b. living things
c. chlorofluorocarbons d. the lithosphere
29. All of the following are greenhouse gases, except
a. nitrogen b. methane c. carbon dioxide d. water vapour
30. You are holding a flashlight so the beam strikes a plane mirror at an incident angle of 38?. What is the measure of angle x between the reflected light ray and the mirror?
a. 38? b. 52? c. 90? d. 155?
Part B: Communication [20 marks]
Answer the questions in the space provided
1. Write the chemical formulas for the following compounds [1 mark each, 6 marks total]
a) Beryllium oxide __________
b) Aluminum nitride __________
c) Nitrogen dioxide __________
d) Tin (II) fluoride __________
e) Ammonium carbonate __________
2. Write the names for each chemical formula [1 mark each, 6 marks total]
a) Li2O ________________________
b) CuSO4 ______________________________________
c) PbS ________________________
d) HCl ________________________
e) C4H6 ________________________
f) FeCl2 ________________________
3. Label each numbered organelle [0.5 marks each, 4 marks total]
1. ___________________________
2. ___________________________
3. ___________________________
4. ___________________________
5. ___________________________
6. ___________________________
8. ___________________________
9. ___________________________
Part C Application [40 marks]
Answer the questions and/or complete the diagrams in the space provided. Be sure to use all relevant formulas, units and information.
1. Balance the following chemical equations and indicate the type of reaction [2 marks each, 6 marks total]
a) ____Al(NO3)3 + ____Na2CO3 ____NaNO3 + ____Al2(CO3)3
Type: _____________________ b) ____Mg + ____O2 ____MgO
Type: _____________________ c) ____C8H18 + ____O2 ____CO2 + H2O
Type: _____________________
2. A 25cm candle produces a real image in a converging mirror that is 4.0cm tall. What is the magnification of the mirror? [2 marks]
3. A red laser beam travels from air into lemon oil. The angle of incidence of the beam is 23º and the angle of refraction is 17º. What is the index of refraction for lemon oil. [3 marks]
5. a) What is the FOv on high for a microscope with the following information [3 marks]
FOv on low Occular Lens Mag Objective Lens High Mag
3.8mm 10X 420X
b) If an onion cell fits 5 time across the field of view on high, what is the size of the onion cell? [2 marks]
6. Explain the differences between plant and animal cells. Use specific organelles in your answer. [2 marks]
7. a) What system is illustrated in the diagram below? [1 mark]
b) with specific reference to all relevant organs and structures explain the path of oxygen from the lungs to the body and of carbon dioxide from the body to the lungs. [4 marks]
8. .Organize the following structures into a hierarchy, organized from most complex to simplest. [1 mark]
9. Describe 3 factors that determine the climate of a region [3 marks]
10. With the use of equations explain how plants and animals alter the amount of gases in the atmosphere through natural processes. [4 marks]
11. What are 3 examples of natural causes of climate change and what are 3 examples of the anthropogenic causes of climate change. Pick 2 of the 6 listed and explain how they are altering the Earth’s climate. [5 marks]
Part D Inquiry [20 marks]
Answer the questions in the space provided
1. Predict the reactant and/or products for each of the following reactions. Balance the reaction once it is complete. [4 marks each]
a) _____HCl + __________ _____H2O + _____AlCl3
b) _____NaCl + _____Li __________ + _____Na
c) _____H2O2 _____H2O + _____
d) _____AgNO3 + _____CaCO3 _________ + _____Ag2CO3
2. Draw the image that would result from this reflection in a diverging mirror. Describe the image using SALT [4 marks]
S : A: L : T :
3. Show where the image will appear. Describe the image using SALT [4 marks]
S : A: L : T :
4. This graph shows the annual average temperature change for the Earth for the past 50 years. Using your knowledge from the climate change unit describe: a) 2 possible reasons for the increase from 1960 – 2010 [2 marks]
b) what are 2 global consequences of climate change [2 marks]
