Earth Science

4. a measure of the amount of dissolved salts in a given amount of liquid
5. the boundary between two tectonic plates that are moving away from each other
8. the movement of air over short distances
12. the theory that all matter and energy in the universe was compressed into an extremely small volume then exploded and began expanding in all directions
15. the movement of deep, cold and nutrient-rich water to the surface
16. a mixture of gases that surrounds a plant/moon/celestial body
17. the trace or remains of an organism that lived long ago
19. an area of the shoreline that is made up of deposited sediment
20. the water that is beneath Earth's surface
23. a shadow that blocks sunlight
25. the spin of a body on its axis
26. type of rock that forms when magma cools and solidifies
28. the wise use of and preservation of natural resources
30. a sun-centered universe
31. the transfer of energy as heat through a metal
32. the boundary between air masses of different densities and temperatures
33. the continuous movement of water between the atmosphere, land, oceans, and living things
35. the process by which rock is reduced in size by the scraping action of other rocks
36. the distance from any point on a wave to the corresponding points on consecutive waves to pass at a given point
38. a resource that cannot be replaced in a single human lifetime
39. an event in which the shadow of one celestial body falls on one another

1. the soft layer of the mantle on which the tectonic plates move
2. the natural process by which atmospheric and environmental agents decompose rocks
3. a natural inorganic solid that has a characteristic chemical composition and orderly internal structure
6. a relatively large spherical body that orbits a star
7. a collection of stars/dust/gas bound together by gravity
9. a tide of minimum range that occurs during the 1st and 3rd quarters of the moon
10. the layer of rock between Earth's crust and core
11. the point at which the sun is as far north or as far south of the equator as possible
13. a solid layer of Earth that contains iron and nickel
14. the motion of a body that travels around another body in space
18. the molten or partially molten rock material containing trapped gases produced under Earth's surface
21. a naturally occurring solid mixture of one or more minerals or organic matter
22. the curving of the path of a moving object from an otherwise straight path due to Earth's rotation
24. the scientific study of Earth's atmosphere, in relation to weather and climate
27. a destructive, rotating column of air that had very high wind speeds
29. the supercontinent that formed 300 million years ago
34. the weather conditions in an area over a long period of time
37. dark-organic material formed in soil from the decayed remains of plants and animals