Download Science 7 Unit 4 Earth`s Crust and Resources

Science 7 Unit 4 Earth’s Crust and Resources
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Composition of the Earth
Read pages 260-262 in your textbook.
Label this diagram of the earth including: crust, inner core, outer core, mantle.
Provide a brief explanation of each region of the Earth’s layers that you labelled.
What is the lithosphere?
Plate Tectonics Theory
Look at the maps on page 264 and 266.
1. What similarities do you notice regarding the position of the plate boundaries on page
266 and the location of earthquakes on page 264?
2. Why do you think there is such a distinct pattern to where the earthquakes occur on the
map on page 264?
Read page 265.
1. Summarize the Theory of Plate Tectonics.
2. What two important things did scientists notice that helped them develop this theory?
Movement at Plate Boundaries
Read pages 268-270.
1. What is a diverging boundary?
2. On the diagram below, label molten rock, mantle, plate, convection currents, ocean (as
in the diagram on page 268).
3. Describe a converging boundary.
4. Describe and sketch a transform boundary. (page 269)
Mountain Building
Read pages 279-283.
1. Define mountain and mountain range.
2. Name the three mountain building processes and provide a brief explanation for
each.
3. Where did Saskatchewan’s rich mineral resources come from? (Infobit page 280)
Rocks & Minerals
Read pages 287-294
1. Explain the difference between rocks and minerals.
2. List and describe the four properties used to identify minerals.
3. Complete page 289 Communicate #1.
4. Complete page 297-298 Communicate #1,2
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5. Complete page 298 Check Your Progress #1-2,4-7
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Saskatchewan Minerals and Mining
Read pages 300-306
1. Use the map on page 302 to label the Saskatchewan Mineral Resource Map.
2. List the four main technologies used to determine what minerals might be found
in an area.
a.
b.
c.
d.
3. Explain the process of core sampling and why it is useful.
4. Diamond Drilling:
a. Why do diamond drill rigs require diamond cutters to drill through rock?
b. What other mining industry require diamond drill bits?
Rock Cycle
Read pages 308-321
Complete Check Your Progress page 321 #1a,2
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Use the diagram above to answer the following questions.
a) Which kind of rock do you think forms first? Why?
b) Using the answer from part a) describe how the other two types of rocks are
formed from the first.
Soil
Read page 327.
How do mechanical, chemical, and biological weathering affect how soil forms?
a) Mechanical Weathering:
b) Chemical Weathering:
c) Biological Weathering:
Soil Characteristics
Read page 328-332
1. List and summarize the four characteristics of soil.
2. Complete Communicate page 332 #1.
3. Complete Communicate page 332 #3.
a) Reforestation Area
- Texture
- Pore Size
- Air and Water Capacity
- Nutrient Content
b) Landfill Site
- Texture
- Pore Size
- Air and Water Capacity
- Nutrient Content
c) Vegetable Garden
- Texture
- Pore Size
- Air and Water Capacity
- Nutrient Content
Saskatchewan Soil
On the map below, label the different soil zones of Saskatchewan. Use the
diagram on page 333.
Copy and complete the chart below using the chart on page 334.
Colour of Soil
Brown
Characteristics
Dark Brown
Black
Dark Grey
Grey
Read pages 336-338.
1. Complete page 339 Communicate #1.
2. Complete page 339 5.5 Check Your Progress #3 and 6.
Natural Vegetation
Read pages 342-347.
1. Complete page 346 Communicate #1
2. Look at the diagram on page 347. Describe the variety of resources and processes
required to produce a pencil.
3. Complete page 350 6.3 Check Your Progress #2 and 3.