Science Vocabualry

4. A resource that can be replaced within a human lifetime.
6. Rain, snow, sleet, or hail.
10. The process by which liquid water changes into water vapor.
13. The process by which water vapor changes into liquid water.
14. The part of some soil that is made up of broken down parts of dead plants and animals.
15. A resource that can be used again and again.
17. Water that has very little salt in it.
18. huge sheet or block of moving ice.

1. To reuse a resource by breaking it down and using it to make a new product.
2. Soil that is a mixture of humus, sand, silt, and clay.
3. Any harmful material in the environment.
5. An underground supply of water.
7. The saving of resources by using them wisely.
8. A resource that, when it is used up, will not exist again during a human lifetime.
9. The movement of water from Earth´s land, through rivers toward ocean, to the air, and back to the land.
11. Grains of rock that you can see with your eyes alone.
12. A material that is found in nature and that is used by living things.
16. Grains of rock that are too small to see with your eyes alone.
19. Particles of rock so small you need a microscope to see them.