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The Earth’s Changing Surface
HOMEWORK #7
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DIRECTIONS:
o Answer the questions below in complete sentences where appropriate.
1. Which of the following are examples of constructive forces?
A. Volcanoes, mountain/island building, and deposition
B. Earthquakes, weathering, and erosion
C. Tornadoes, hurricanes, volcanoes
D. Earthquakes, tidal waves, erosion
2. What two kinds of crust are there?
A. lithospheric and asthenospheric
B. silicon-based and iron-based
C. continental and oceanic
D. outer and inner
Define destructive forces. _____________
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Which is more dense? __________________________________
3. The hard outer layer of the Earth is called the
A. Lithosphere
B. Asthenosphere
C. Hemisphere
D. Mesosphere
What two main layers make up that layer?
A. Crust and core
C. Mantle and core
B. Crust and mantle
D. Crust and Asthenosphere
4. Which statement below best describes what happens to the layers of the earth as you descend (go
down) from the surface to the center.
A. The temperature increases, the density decreases, and the composition increases
B. The temperature decreases, the density increases, and the composition decreases
C. The temperature increases, the density increases, and the composition changes
D. The temperature decreases, the density decreases, and the composition changes
5. Which of the following lists the composition of the Earth’s outer core?
A. calcium, potassium
B. silicon, aluminum, calcium, sodium and potassium
C. Mostly nickel and some iron
D. oxygen, magnesium, iron, aluminum, and calcium
Found where: ____________________
What is unique (special)
about the Outer Core that
makes it different from ALL
other layers? ____________
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6. List the 5 sub layers in order of coolest to hottest temperature. ________________________________
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7. List the 5 sub layers in order from the surface to the center. __________________________________
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8. Match the 5 sub layers with the main layers they are found in. HINT: One of the sub layers is found in
two of the main layers.
____________ Lithosphere
A. Crust
____________ Asthenosphere
B. Mantle
____________ Mesosphere
C. Core
____________ Outer Core
____________ Inner Core
9. Which layer of the Earth is a solid ball of iron, has the highest density, and is the hottest?
A. Lithosphere
B. Crust
C. Outer core
D. Inner core
10. Which of the following would be the best model of the Earth's layers?
A. a peach
B. a water balloon
C. a basketball
D. a potato
Explain why you chose your answer. _____________________________________________________
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11. Which of these describes the Earth's outer core?
A. cold liquid
B. hot solid
C. cold solid
D. hot liquid
Which two choices could you have eliminated
instantly? ___________________________________
Explain why. _________________________________
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12. What area of the Earth's mantle is the densest?
A. The entire mantle has the same density.
B. the area in-between the Earth's crust and core
C. the area nearest to the Earth's core
D. the area nearest to the Earth's crust
Explain why you chose your answer. _____________________________________________________
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13. Did Alfred Wegener have evidence to support his Theory of Continental Drift? ____________________
Describe 2 of the 3 key pieces of evidence he used to support his theory. ________________________
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14. Explain why his fellow scientists didn’t accept his theory. _____________________________________
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15. What is the name of the “Supercontinent” Alfred Wegener believed used to cover our planet? ______
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