Everett Science 1

3. Matter that settles at the bottom of a liquid is...
4. A ditch formed where soil washed away.
6. Large mass of moving rock or soil from a mountain or cliff.
8. Material in the soil that is made from living things that are broken down or decayed
10. The very center of the earth.
12. To plant different crops from year to year.
13. The loss of topsoil by water and wind
15. The shaking of the earth's crust.
16. The top layer of earth's crust.
17. A place in the earth where magma can erupt as lava is a...
18. Water; the right kind of air, and good soil are examples of natural...
19. There are ... continents on the earth.
21. A natural formation of rock or soil on the earth's surface is called a ...
22. Seventy percent of the earth is covered by...

1. Soil in which plants grow well.
2. The coldest parts of the earth are the...
5. A new landform made by soil deposited at the end of a river is a ...
7. The imaginary line around the earth halfway between the North and South Poles
9. The place where a river begins, usually high in the mountains, is its...
11. A substance in the earth that has never been alive.
14. Precipitation on land that eventually trickles into streams
20. The outer layer of the earth