Was there in fact a crime committed?
Let’s find out what type of rock the
bedrock is!!
Hardness Test
Streak Test
Streak Test
Cleavage &
Fracture Test
Cleavage &
Fracture Test
Cleavage &
Fracture Test
Cleavage &
Fracture Test
Galena
Hornblende
Halite
Calcite
Biotite
Muscovite
Gypsum Greater than 3
Scroll to Rocky Woods (Mrs. Sperling) page in your Student Packet to determine the type of Bedrock at Rocky Woods
Diorite
(igneous intrusive)
3
or less
Color
None/white
Color None/white
120/60
120/60 90/90
90/90
fakes fakes
180 1 directon
Sulfide Ore
(igneous intrusive)
Rock Salt
(Sedimentary chemical) Limestone
(Sedimentary organic) Pagioclase
(Igneous extrusive) Muscovite schist (Metamorphic) Gypsum
(Sedimentary chemical)
Diorite is an Igneous Rock!
Hornblende is the mineral…
Hornblende is found in the rock Diorite…
Flip to Hopi
What piece of evidence at the Hopi Ave. locaton also contained Diorite?
Hop i
Ave
The Bedrock!!!
(Step 4 at the top of the hill)
Diorite (along with granite) is
IGNEOUS
bedrock found in
Medfield – so what type of rock is missing that
SHOULD be there??
SEDIMENTARY!!
Shade in on
your large map
(use colored pencil or crayon):
•YELLOW – Diorite
•GREEN - Granite
Bedrock of Medfield
Bedrock of the Northeast
On Map Insert C (Rock Types), color with colored pencil or crayon:
•BLACK – rhyolite
•PINK – pink granite
Wind
Turn to
Rocky Woods
(Mrs. Doolan) page with questonsWhat directon did the wind blow?
•Color an arrow orange and label it “Wind.”
•Place it on your map pointng in the directon in which it blows (use the compasses).
Gravity
Highlight/color (using colored pencil or crayon)the places on your map in PURPLE that are highlighted
here as HIGH elevatons
In this arrow - record # miles to the nearest ocean??
Use the Map Mileage Scale below
Waves
Turn to Rocky Woods (Mrs. Doolan) page with questons to remind you how close the nearest ocean is and then, record on Map Insert B the # of
miles (approximate)
Glaciers
On Map Insert A, color the areas of Earth with contnental glaciers in RED Marker
Running Water
Highlight, on your large map, the major waterway (The Charles River) in BLUE Marker and label it “Charles River.”
Plotting the
Evidence at the
Crime Scenes…
Dale St.
Cemetery
•Turn to the
Dale St. page
(Mrs. Caprio) in your Student Packet to plot the directionality line on the compass at the Dale Street site on your BIG map.•Using a ruler, carefully draw in BLACK
MARKER the Caution Tape line (yellow) where it appears on the compass in your Student Packet.
•Using the model magic, create a model of the EXPOSED BEDROCK found here.
This model should be flat and show the SCRATCHES in the rock.
•Now place the model on the map so that it is placed accurately in relation to Dale St.
•Lastly, place the model on the map so that the scratches are in the same
direction as your compass line.
Hopi Ave.
• Turn to the Hopi Ave. page in your Student Packet with the compass, to plot the Yellow cauton tape line on the compass at the Hopi Ave site on the BIG map.
• Using a ruler carefully draw in BLACK MARKER the Yellow cauton tape line where it appears on the compass in your Student Packet.
The Giant Boulder:
• What type of rock is this rock?
Rhyolite
• Using the model magic create a model of the GIANT BOULDER with about 4 cm in diameter.
• Place the boulder in the Hopi Ave. rectangle (with space for 2 more).
• With a marker, color the boulder model BLACK and then place on the map.
The Small (unusual) Boulder
• What type of rock is this rock?
Granite & Rhyolite
• Using the model magic create a model of the SMALL BOULDER with about 2 cm in diameter.
• Place the boulder in the Hopi Ave.
rectangle (with space for 1 more).
• With a marker, color the boulder model BLACK and GREEN and then place on the map.
The Other Huge Boulder
• What type of rock is this rock?
Pink Granite
• Using the model magic create a model of the HUGE BOULDER with about 3 cm in diameter.
• Place the boulder in the Hopi Ave.
rectangle next to the other 2.
• With a marker, color the boulder model PINK and then place on the map.
Tallwood Road
•Turn to the Tallwood Rd. page in your Student Packet (Ms. Hurley) with a
compass, to plot the yellow caution tape line on the compass at the Tallwood site on your large map.
•Using a ruler carefully draw in BLACK MARKER the directionality line where it
appears on the compass in your notebook.
•Using the model magic, create a model of the long, winding landform that is about 5-6 cm long and about 1 cm high.
•Using the map in your notebook, place the landform accurately in relation to Tallwood Road.
•Also, check to be sure that it is lined up to point the same direction as the compass line you drew on the map at this location.
Rocky Woods
•Turn to the Rocky Woods (Mrs.
Doolan) page in your Student Packet with the compass, to plot the yellow caution tape line on the compass
shown here.
•Using a ruler carefully draw in
BLACK MARKER the directionality
line where it appears on the compass
in your student packet.
• In blue marker color in the lake (Chickering) found at Rocky
Woods on your big map.
• Label it in pen “Chickering Pond”.
Now what?
Now we solve the crime!!
You are now ready to use
your map to determine who
the primary suspect (agent of erosion) is in our
investigation of your
hometown of Medfield….
• Get the G-CSI Investigation Wrap Up Sheet (1 sheet/person)
• As a group analyzing your map and using your agents of erosion notes (that we used when experts each taught about their
specific agent of erosion), complete the table.
• Once you have completed the table discuss with your table group who you believe the PRIMARY SUSPECT is and WHY. Discuss the specific evidence that supports this
suspect.