Geography 10: Ch.4 Supplement:
Ch. 20 Pg 153-156 “Earth Dynamics”
1. How are scientists studying the earth’s interior further than it is possible to drill?
2. What does the term ‘plastic’ or plasticity mean in geography?
3. What are vibrations through the earth’s layers affected by?
4. Scientists are confident they understand the basic layers of the earths form, but where are
they still finding out new information? READ CAREFULLY. Pg 154L
5. How much of the earth’s mass does the core represent? Why is it so heavy/dense?
6. What is the range of estimated temperatures for the earth’s core? Why do scientists think it
is so hot?
7. Explain why the inner core is solid and the outer core is liquid or molten.
8. Are the different layers or zones of the earth the same thickness everywhere?
9. What makes the asthenosphere different from the rest of the mantle?
10. Explain how convection cells affect the asthenosphere. Leave 3 empty lines.
11. What happens where the oceanic crust (sima) and continental crust (sial) meet? Two types
of events.
Complete: Questions 1-4 on Pg 156 in full sentences. You may want to write down the
questions. For #1 make an organizer with clear titles—use a full page.
Geography 10: Ch.4 Supplement:
Ch. 20 Pg 153-156 “Earth Dynamics”
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
How are scientists studying the earth’s interior further than it is possible to drill?
What does the term ‘plastic’ or plasticity mean in geography?
What are vibrations through the earth’s layers affected by?
Scientists are confident they understand the basic layers of the earths form, but where are
they still finding out new information? READ CAREFULLY. Pg 154L
How much of the earth’s mass does the core represent? Why is it so heavy/dense?
What is the range of estimated temperatures for the earth’s core? Why do scientists think it
is so hot?
Explain why the inner core is solid and the outer core is liquid or molten.
Are the different layers or zones of the earth the same thickness everywhere?
What makes the asthenosphere different from the rest of the mantle?
Explain how convection cells affect the asthenosphere. Leave 3 empty lines.
What happens where the oceanic crust (sima) and continental crust (sial) meet? Two types
of events.
Complete: Questions 1-4 on Pg 156 in full sentences. You may want to write down the
questions. For #1 make an organizer with clear titles—use a full page.