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The Water Cycle and WeatherChapter 7What is the Water Cycle?-Lesson 11. Water can exist in 3 stages: solid (ice), liquid (water), gas (water vapor)2. The four steps of the water cycle are evaporation, condensation, precipitation and run-off.3. Water cycle- repeated movement of water through the environment in different forms.4. Evaporation- changing of a liquid to a gas.5. Condensation- when a gas turns into a liquid.6. Precipitation- when water falls from the clouds as rain, snow, sleet or hail.7. Runoff is water that flows off the land into streams, rivers, lakes and oceans.8. The steps of the water cycle are affected by temperature, pressure, wind and elevation.9. The water cycle can follow different paths-condensation forms clouds, condensation can also for dew. 10. Sublimation and frost formations are also paths of the water cycle. 11. Sublimation is ice changing into water vapor without first melting. Water vapor can turn into ice without first becoming liquid vapor. The ice crystals that form are called frost.12. The sun provides the energy to make water change state in the water cycle.What is the Ocean? -Lesson 213. Hydrosphere is made up from all the waters of Earth.14. Oceans make up almost all of the hydrosphere.15. Oceans cover a little less than ? of the Earth’s surface. Only 3% of the hydrosphere is in other places. 16. Some ocean waters have a higher salinity than others because water evaporates quicker in warmer areas.17. Ocean water temperature varies from place to place. Ocean water near the equator is warmer than ocean water near the poles.18. Ocean is a source of many resources: table salt, drinking water and magnesium. ................
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