C1

3. The part of the Earth System that contains all living things (page 7).
6. Not made from living things (page 33).
8. The amount of matter in a specific amount of space; mass / volume (page 20 & 37).
10. Rock formed from cooled lava or magma (page 47).
11. The type of natural force that adds or builds new landforms (page 8).
14. A naturally-occurring solid formed by inorganic processes that has a crystal structure and a definite chemical composition (page 32).
17. The repeating patter of a mineral’s particles (page 33).
18. The part of the Earth System that includes all of the gases that surround the planet (page 6).
19. The type of natural force that destroys or wears away landforms (page 9).

1. The thickest layer of the Earth is the __________ (page 14).
2. Rock formed when heat and/or pressure changes another rock (page 47).
4. Rock formed from small pieces of rock (and plants or animals) that have been compacted and cemented together (page 47).
5. The part of the Earth System that contains all of the planet’s water (page 6).
7. The Earth’s thin outer layer of solid rock (page 13).
9. When atoms arrange into crystals (page 40).
10. The Earth’s center layer, made of solid metal (page 15).
12. The Earth’s ___________ is composed of liquid metal (page 15).
13. A group of parts that work together as a whole (page 4).
15. How heat is transferred in liquids and gases (page 19).
16. The part of the Earth System that includes all of the planet’s rocks on and below the surface (page 6).