Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
EARTH SCIENCE HOMEWORK, CH 12, Lesson 1 Water cycle, Humidity 1. Water is always moving between Earth’s ___________ and surface. (420, P1) 2. The movement of water through Earth’s systems, powered by the __________ energy, is the ________ _________. (420, P2) 3. In the water cycle, water vapor enters the atmosphere by ___________ from the oceans and other bodies of water and leaves by ______________. (420, P2) 4. ____________ is the process by which molecules of ___________ water escape into the air after becoming __________ __________. (420, P2) 5. _____________ is the process by which water vapor becomes _________ __________. (420, P2) 6. Water vapor is also added to the air by _________ ________, such as plants and when animals exhale (breathe out). (421, P1) 7. Some of the water vapor in the atmosphere condenses to form __________. Rain and snow fall from the clouds toward the surface as ______________. (421, P2) 8. The water then runs off the surface of moves through the __________, back into lakes, streams, and eventually the _________. (421, P2) 9. Then the water cycle starts all over again with _____________. (421, P2) 10.__________ is a measure of the amount of __________ _________ in the air. (422, P1) 11. The ability of air to hold water vapor depends on its ____________. Warm air can hold more water than __________ air. (422, P1) 12. Weather reports usually refer to the water vapor in the air as _________ ____________. (422, P2) 13. Relative humidity is the percentage of water vapor that is actually in the air compared to the maximum amount of water vapor the air can hold at a particular ______________. (422, P2) 14. For example, at 10o C, 1 cubic meter of air can hold at most 8 ________ of water vapor. (422, P2) 15. If there were 8 grams of water vapor in the air, then the _________ ___________ of the air would be 100 ________. (422, P2) 16. If the air had 4 grams of water vapor, the ___________ ____________ would be 100%. (422, P2) 17.Relative humidity can be measured with an instrument called a _____________. (422, P3)