| A | B |
|---|
| ocean | body of salt water that comprises ninety-seven percent of Earth’s water |
| water vapor | the gaseous state of water |
| condensation | the process by which water vapor changes into liquid water, usually on a surface |
| condense | when water vapor touches a cool surface and becomes liquid water |
| dew | water that condenses outdoors on a surface when the temperature drops at night |
| drought | a less-than-normal amount of rain or snow over a period of time |
| evaporate | when liquid water in a material dries up and goes into the air |
| evaporation | the process by which liquid water changes into water vapor |
| fog | water droplets that condense from the air close to the ground |
| fresh water | water that is in lakes, rivers, ground water, soil, and the atmosphere |
| frost | frozen condensation on a surface |
| glacier | a large mass of ice that along with ice caps contains about seventy percent of Earth’s fresh water |
| greenhouse effect | the trapping of heat in the atmosphere causing Earth’s temperature to rise |
| groundwater | water found in the spaces between rock particles (sand, gravel, pebbles), and in cracks and spaces in solid rock |
| hail | precipitation in the form of balls or pellets of ice |
| hurricane | a severe cyclonic tropical storm that produces high winds and heavy rainfall |
| ice cap | an ice mass that along with glaciers contains about seventy percent of Earth’s fresh water |
| lake | a body of fresh water surrounded by land |
| climate | the average or typical weather conditions in a region of the world |
| recycle | to use again |
| blizzard | a severe storm with low temperatures, strong winds, and large quantities of snow |
| river | a large natural stream of water emptying into an ocean, lake, or other body of water |
| salt water | ocean water |
| severe weather | out-of-the-ordinary and extreme weather conditions |
| sleet | precipitation in the form of ice pellets created when rain freezes as it falls to Earth from the atmosphere |
| snow | precipitation in the form of ice crystals (snowflakes) |
| transpiration | the process by which water escapes into the air from plants |
| thunderstorm | severe weather that produces heavy rainfall and powerful static electric discharges |
| tornado | a rapidly rotating column of air that extends from a thunderstorm to the ground. Wind speeds can reach 400 kilometers (km) per hour or more in a tornado. |
| water cycle | the global water-recycling system. Water evaporates from Earth’s surface, goes into the atmosphere, and condenses. It returns to Earth’s surface as precipitation in a new location. |
| climatologist | scientists who study climate |
