Earth Structure, Tectonics Quiz

4. These plates are NOT normally involved in a collision boundary.
5. The Earth is around 4 __________ years old.
6. A buildup of ____________ makes destructive boundaries´earthquakes and volcanoes normally more violent.
7. The process that transfers heat outwards from the center of the Earth is called _______.
8. Type of plate boundary where subduction zones happen.
10. These events occur mainly on destructive and conservative plate boundaries.
13. At a conservative plate boundary, plates may move in the same direction at a different ________.
14. The Earth's mantle is so hot that it is ___________.
17. The center of the Earth is _________ than the surface due to radioactivity and outward cooling.
18. The name given to molten rock in the Earth´s mantle.

1. The Andes mountains are formed at the margin of the South American and ______ plates.
2. Type of plate boundary where new crust is formed as plates separate.
3. A 7 magnitude earthquakes is ___________ times greater than a 6 magnitude earthquake.
7. The solid surface of the Earth is called __________.
9. The location of origin of an earthquake at the surface is known as the ____________.
11. The name of the scale to measure earthquake magnitude.
12. These mountains are formed at the margin of the Indo-Australian and Eurasian plates.
15. the gradual movement of plates around the Earth's surface is known as continental _____
16. The name of the solid center of the Earth.