Science Unit 8 Vocab

2. in a liquid when the warmer molecules move up and the cooler ones move down
4. the layer above the stratosphere, from 50 km to 80 km.
7. amount of matter that can fit inside of a certain space
9. contains high concentration of ions and free electrons, reflects radio waves.
10. an instrument used to measure wind speed
14. the layer above the troposphere, extending about 50 km above.
16. an instrument used to measure air pressure
18. the lowest region of the atmosphere, from earth’s surface to about 6-10 km above.
19. winds winds that blow over a local region

1. effect makes things that travel long distances across the earth’s surface appear to move at a curve instead of in a straight line.
3. the layer above the mesosphere, contains part of the ionosphere.
5. the movement of air and other gases moving across the earth’s surface.
6. the protective layers that surrounds earth.
8. pressure the pressure of the air around us that is pulled down by gravity.
11. the outermost layer of earth.
12. effect when the atmosphere absorbs and traps the sun's heat in it to warm earth.
13. winds winds that blow across the earth
15. energy that comes from a source and can travel at the speed of light, Electromagnetic waves.
17. energy energy created by heat.
20. the measure of height above sea level