study

1. the sixth step of the scientific method is to analyze _
3. the fifth step of the scientific method is to observe and _
9. relative _ is a measure of the amount of water vapor that air is holding compared to the amount needed for saturation at a specific temperature.
10. the _ is the layer of the atmosphere nearest to Earth's surface.
12. The boundary between cold and warm air masses
15. Areas of low _ usually have cloudy weather.
19. the hypothesis that the continents slowly moved apart is called _ drift
20. a vast underwater chain is called a mid _ ridge
21. the process that takes rocks inside the earth

2. the _ is used to measure temperature
4. when a scientist has tested their hypothesis, they must _ and record
5. the second step in the scientific method is to form a _
6. the _ are the first to reach a seismograph after an earthquake.
7. the fourth step of the scientific method is to _ the hypothesis
8. the first step of the scientific method is to _ the problem
11. plates move apart at _ boundaries
13. the third step in the scientific method to design an _
14. a scientific law describes a _ in nature
15. the _ waves are the first to reach a seismograph after an earthquake.
16. The process of liquid changing to a gas at the surface of the liquid is called _
17. are the first to reach a seismograph after an earthquake.
18. the seventh step of the scientific method is to draw _