Students will need to answer 3 out of the 5 questions.  Homework packet is due Friday, February 3, 2012.  Be sure to write the question number next to your answer.  All answers must be in

complete sentences.

Questions:

1)   Describe the layers that make up the Earth.

2)  Explain how the inner and outer core differs.

3)  Explain how the crust and the mantle differ.

4)  Explain how scientists use seismic waves to map the interior of the Earth.

5)  Explain how sea-floor spreading provides way for continents to move.