Download Review Packet Inside the Earth - JBHA-Science-tri3

Review Packet for Inside the Earth
Section _____ Name ___________________ Date ______
Part 1.
1. The two ways the earth’s layers can be classified is by their ___________________________ and
their ___________________________.
2. Name the chemical layers in order starting at the Earth’s surface. _________________________________.
3. What is the Moho? ______________________________________________________________________.
4. Choose the substance in Column B that best describes the composition of each Earth layer in Column A, and
write the letter of the substance in the space provided.
Column A
Column B
_____ 1. Oceanic crust
a. granite
_____ 2. Contintental crust
b. iron
_____ 3. Mantle
c. basalt
_____ 4. Core
d. iron and magnesium
5. Fill in the table about the physical layers? They are not in any particular order.
Physical layers of the Earth
Physical properties
Solid and very dense
liquid
Rigid solid
strong
Solid rock that flows
6. . Tectonic plates are part of which physical layer?
_____________________
7. Tectonic plates move around on top of which physical layer?
____________________
8. Scientists learn about the earth’s interior structure is by studying how ______________________
move through the earth.
9. The spinning of which layer explains why Earth has a magnetic field? _____________________
9. List three differences between the continental crust and oceanic crust. (Use bullet points)
Part 2.
Part 3.
.
Part 4.
Part 5. (Optional Extra Credit) Changes in pressure can change the melting pint of a substance. Pressure is
the amount of force exerted on a unit of area. Weight is a common form of pressure. The materials that make
the layers of the earth are under pressure from each layer above them.
1. Which layer of the Earth is under more pressure, the asthenosphere or mesosphere? ___________________
2. Which layer is under more pressure, the inner core or the outer core? Why? _________________________
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3. According to their melting point, the iron and nickel in the inner core should both be in a liquid state.
However, due to the extremely high pressure in the inner core, these materials are both solid. Based on this
information, what effect does pressure seem to have on the melting point of materials?
_____________________________________________________________________________________
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4. The silicates, aluminum, and magnesium in rocks that make up the asthenosphere show a characteristic
called plasticity. What factors do you think are responsible for this characteristic?
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