| A | B |
|---|
| rusting | when metal becomes covered in a reddish-brown or orange coating after being exposed to moisture in the air |
| weathering | the changing of the earth's surface |
| erosion | the carrying away of rock bits by wind, water, or gravity |
| physical feature | something found in nature such as plant life, land, and water |
| fossil | the hardened remains of an animal or plant that lived long ago |
| temperature | how hot or cold something is |
| wind direction | where the air moving over the earth is blowing (north, south, east, west) |
| wind speed | how fast the air moving over the earth is blowing measured in miles per hour (mph) |
| precipitation | the falling of water in the form of rain, sleet, hail, or snow |
| season | one of the four parts of the year (spring, summer, winter, or fall) |
| evaporation | the change from water to water vapor |
| condensation | the change from water vapor to water |
