| A | B |
|---|
| The changing of water from gas form (water vapor) to liquid form is called ____. | condensation |
| The changing of water from liquid form to gas form (water vapor) at temperatures below boiling is called ___. | evaporation |
| Evaporation from the surface of plant leaves is called ____. | Transpiration |
| When water condenses and then starts to fall as either rain or snow, these two forms of water can both be called ______. | precipitation |
| When organisms burn their food in the presence of oxygen, the two waste products are carbon dioxide and ___. | water vapor |
| Water that ends up deep below the ground is called ___. | ground water |
| What are four things that help move water around in the water cycle? | Wind, gravity, the sun, and transpiration |
| Solid water is also called _____ and _____, | ice and snow |
| Water in the gas phase is called _____. | Water vapor |
| The process called _____ changes water from the solid to the liquid form. | melting |
| The process called _____ changes water from the liquid to the solid form. | freezing |
| The process called _____ changes water from the solid straight to the gaseous form. | sublimation |
| The process called _____ changes water from the gaseous form straight to the solid form. | deposition (the frost on your car early in the morning is an example) |
| Where is most of the world's water found? | In the oceans |
| About what percentage of this planet is covered by oceans? | 71% |
| About what percentage of the water in the world is salt water? | 97% |
| About what percentage of the world's water is fresh water? | about 3% |
| What percentage of fresh water can be found in lakes and rivers? | 1% (remember, this is 1% of the water which is fresh, which is only 3% of the water on Earth) |
| A(n) _______ is an area of land that drains into a particular river, lake, or ocean. | watershed |
| About 21% of fresh water on this planet can be found ______. | underground as ground water |
| A(n) ______ is a large underground reservoir of water. | aquifer |
| The _____ is the depth that you would have to drill into the ground to reach water (like for drilling a well) | water table |
| Most of the fresh water on this planet is found in ______. | icecaps and glaciers (about 78% of freshwater is frozen) |
| The percentage of freshwater that is tied up in icecaps and glaciers is shrinking due to _____. | global warming |
| Water can be found in the atmosphere as _____ and _____. | water vapor and clouds |
| The water vapor in the air can be felt as _____. | humidity |
| What are the five main places that water can be found on Earth, beginning with the largest percentage and ending with the smallest percentage? | Oceans, icecaps and glaciers, ground water, rivers and lakes, the atmosphere |
| What are the three most important things that the water cycle helps to do for this planet? | 1) Moderates the Earth's temperatures 2) Dissolves nutrients and moves them so plants can use them 3) Acts a natural water purifier |
| What are two ways that the water cycle helps purify and recycle water? | 1) Evaporation (which leaves pollutants and salts behind) 2) Percolation down through the soil (acts as a natural water filter and exposes it to bacteria that help break down pollutants and organic matter) |
