Across
- 1. three things necessary for photosynthesis, carbon dioxide, sunlight,_______
- 7. The boundary between cold and warm air masses is called a_______
- 8. The point in Earth's interior where the energy release of an earthquake occurs is the _____
- 11. to occur
- 12. The hypothesis that continents have slowly moved to their current locations is _______ drift
- 14. the last step in the scientific method
- 15. areas of _______ usually have cloudy sky
- 18. _______ humidity is a measure of the amount of water vapor that air is holding compared to the amount needed for saturation at a specific temperature
- 19. ______ is one way in which movement of two blocks of rock along a fault causes an
- 20. Plates move apart at _______ boundaries
Down
- 2. The process of liquid changing to a gas at the surface of the liquid is called _________
- 3. is process takes rock to the inside of Earth
- 4. the first step in the scientific method is to recognize a problem
- 5. _______ waves are the first to reach a seismograph after an earthquake
- 6. Most of the freshwater on Earth is found in______
- 9. used to measure temperature
- 10. The __________ contains the highest concentration of ozone
- 13. when you test a hypothesis the next step is ____ and record
- 16. vapor Water evaporates from oceans and lakes and rises into Earth's atmosphere as ___________
- 17. A vast, underwater mountain chain is called a mid _____ ridge