Name: _____________________________________ Date: _______________________

Unit 2 Review Packet-Test Wednesday!!!

Earth’s Layers

7. On which two layers do plate tectonics occur? ______________ and ____________.

8. Which layer acts as a giant magnet? _____________

9. Which layer is responsible for create the magnet? _______________

10. Explain what the arrows represent in number 4, if you need to draw a diagram to help.

11. Which two layers make up the lithosphere? ____________ and ______________.

12. Which two layers are made up of mostly iron and nickle? ___________ and _____________.

13. Which layer is more dense, layer 1 or 2? ____________ What will happen when they collide?

Plate Tectonics

For questions 1-15 refer the diagram labeled below.

For the diagram below, label each type of plate boundary.

1. _________________________________________________________________

2. _________________________________________________________________

3. _________________________________________________________________

4. _________________________________________________________________

5. Which type of plate boundary is associated with deep sea trenches? _________

6. Which type of plate boundary is mostly found on the sea floor? _________

7. Which type of plate boundary is most likely to create mountain ranges? _________

8. Which type of plate boundary creates new crust? _________

9. Which type of plate boundary creates volcanos? _________

10. Which type of plate boundary does subduction occur? __________

11. What two types of crust are most likely colliding in number 1?

12. Which two types of crust are mostly likely spreading apart in number 2?

13. Which two types of crust are mostly likely in number 3?

14. Which plate boundary is active and found in California? ____________

15. Which type of plate boundary recycles old crust? __________

16. Please draw a diagram explaining how new crust is made and old crust is recycled below.

17. What is Pangea? a. Earth’s inner coreb. A large landmass that all continents are currently formingc. The largest fault found on Earthd. A large landmass in which all continents were once connected

18. What is a transform boundary?a. When two plates pull away from each other.b. When two plates collidec. When two plates slide past one anotherd. When two plates more toward each other

19. Do two colliding continental plates always cause a volcano?a. Yes, subduction always occurs when continental plates collideb. No, earthquakes always occur when who continental plates collidec. No, usually no subduction occurs when continental plates collided. Yes, subduction always occurs when oceanic plates collide

20. Where do most earthquakes occur on Earth? Explain why.

Magnetics

1. Explain what it means for something to be magnetized.

2. The north pole of one magnet will be attracted to the _______________ pole of another. Why does this happen?

3. Why do we call it “magnetic north”?

4. Earth is a giant ____________________________________. What part of the Earth is responsible?

5. Which way does a compass point?6. In the boxes below, draw in the atoms.

7. What does it mean if an object is polarized? How do you polarize something?

8. In the boxes below draw in the atoms.

9. What does an object have to be made out of to be able to be polarized?

10. What other word means to be polarized?

11. On the diagram below label the North and South pole on Earth’s magnet.

12. On the diagram below draw a magnetic field. Be sure to include arrows!

13. On the diagram below label magnetic north.

Challenge!! For the compasses below you are told the direction the person is traveling, please draw in the compass arrow.

20. Which part of the magnet is strongest? Weakest? Why?

Fossils

1. How do fossils support the Theory of Plate Tectonics?

2. What type of rock do we usually find fossils in?

3. What principal explains the order of sediment layers? What does the principal tell us?

Answer the following questions based on the diagram above.

1. Which of the fossils above is a trace fossil? (name one)

2. Which fossil had the longest life span?

3. Which of the fossils had the shortest life span?

4. Which of the fossils is the oldest?

5. Which of the fossils above is a body fossil? (name one)

6. What was the time span of the Sand Dollar?

7. What was the life span of the Shell?

8. What does Mya mean in the diagram?

9. Which layers is the oldest? How do you know?

10. Which layer is the youngest? How do you know?

Which direction is the person traveling in the compasses below?