2nd Quarter

3. Changes in the ______of seismic waves were used to determine the location of Earth's layers.
6. The place where an earthquake originates is called the __________.
7. The property that peels off in flat sheets.
12. What famous strike-slip fault is located in California.
13. Earthquakes occur when rocks __________.
14. an underwater earthquake can cause a wave called a ______.
15. The cycle of heating, rising, cooling, and sinking is called________current.
17. What type of forces create mountains?
19. Which term refers to the ridged layer of Earth that is about 100 km thick and generally less dense than the material below it?
21. Plates move together at ______ boundaries.
24. how many parts are in Earth's core?
25. the largest layer of Earth is the _____?

1. Earth's inner core is________.
2. What is the name of the giant supercontinent.
4. _________can be located based on different speeds of seismic waves.
5. Oceanic plates are pushed down into the upper mantle in ______zone.
8. Which scientist is credited with the continental drift hypothesis? Alferd_______________.
9. continental drift occurs because of _______spreading.
10. Each mineral has a set of properties and specific__________ makeup.
11. The layer over which the tectonic plates move is the _____________.
15. The process occurring in the mantle that is thought to be the force behind plate tectonics is an example of a(n)___________current.
16. The youngest rock in the ocean floor is located at the mid-ocean______.
18. Plates move apart at________boundaries.
20. The fastest traveling seismic waves are____-_______?
22. The study of Earth and Earth process is called?
23. _____________boundary has plates sliding past each other.