Earth Science

4. the leaves of a tree
5. what is a naturally occurring and coherent aggregate of one or more minerals.
7. a u shaped valley formed by large blocks of ice
8. where a river meets the ocean
11. what is the name for the interaction of plates moving on the mantle
13. two plates move toward each other
15. a fracture or zone of fractures between to plates
16. gasses that make the atmosphere heat up
17. what is a naturally occurring substance with distinctive chemical and physical properties, composition and atomic structure

1. the downward movement of the edge of a plate into the mantle
2. the percentage of void space in a material, such as soil or rock
3. non renewable energy source like gasoline
6. a rupture in the Earth's crust that allows lava, ash, and gases to escape from a magma chamber below the surface
9. a fluid's resistance to flowing.
10. when two plates move away form each other
12. a sudden, violent shaking of the Earth's surface that occurs when two tectonic plates move past each other along a fault line
14. where streams come together to form a river