| A | B |
| ocean | One of five large bodies of salt water that covers about 75% of Earth |
| fresh water | Water found in lakes, rivers, and streams that contains very little salt |
| salt water | Water found in oceans (and a few lakes) that contains 3-4% of salt |
| evaporation | physical change in matter from liquid to gas |
| condensation | physical change in matter from gas to liquid (loses energy) |
| precipitation | Rain, snow, sleet, or hail that falls from clouds in the sky |
| accumulation | Where rainwater gathers together on Earth in puddles, ponds and lakes |
| run off | When rainwater travels down mountains and hills |
| transpiration | when plants release water through pores in their leaves |
| stomata | a tiny opening or pores in a leaf that allows the exchange of water vapor and gases |