Study Guide for Test #3 Earth Layers and Plate Tectonics
 Know specifics on each layer of the earth from the notes, what each is made up of?
 Specifically know the Continental and Oceanic Crust= thickness, density, what rock
makes up the crust?
 What is lithosphere and asthenosphere?- what are they composed of and what are they
are responsible for doing in plate tectonics?
 Look at Lithosphere lab and write the number of lithospheric plates.
 Questions on Lithosphere Lab Part A & Part B
1. How does density affect subduction of lithospheric plates?
2. What force cause sea floor spreading?
3. What type of plate is the San Andreas Fault?
4. What happens when two continental crust converge?
5. What happens when continental and oceanic crust converge?
6. From which layer of the earth does magma rise?
7. What happens when 2 oceanic crust converge?
8. What happens at divergent boundaries between 2 oceanic plates?
9. Which part of the mantle is responsible for moving plates?
10.Aleutian Islands are an example of what kind of plate boundary interaction? Converging
plate boundaries
11.The Red Sea was formed by what kind of plate boundary interaction?
12. The Himalayas were formed by what kind of plate boundary interaction?
13.What happens when plates slide past each other?
14.How do scientists know the earth’s magnetic field has changed over millions of years?
15.Explain how the total area of the Earth’s surface stays the same if new plates are being
created on Earth.
16.What type of rock is being made at spreading ridges in the ocean?
17.What in the Earth’s mantle is causing the lithospheric plates to drift?
18.How many types of plate interaction for divergent plate boundaries?
19.How many types of plate interactions for convergent plate boundaries?
20. When is a trench formed?
21.What happens after a plate partially melts during subduction?
22.What is a rift?
23.A Rift valley forms when two Cont plates diverge.
24.What is a basin?
25.What is a fault?