| A | B |
|---|
| Thermometer | tool used to measure the amount of heat |
| Celsius | metric temperture scale |
| 0 degrees celsius | freezing point of water |
| 100 degrees celsius | boiling point of water |
| condensation | changing from a gas to a liquid, occurs on the mirror after you take a hot shower |
| evaporation | changing from a liquid to a gas, pudles evaporate in the sun |
| precipitation | rain, snow, sleet or hail that falls from the sky |
| water cycle | the constant pattern of condensation, precipitation and evaporation |
| meteorology | the study of weather |
| Thunder | the sound produced by the quick heating and expansion of the air as lighten passes |
| Crescent moon | only a sliver is visible |
| Full moon | full circle visible, Earth is between sun & moon |
| Gibbous moon | 3/4 of moon is visible |
| Half moon | 1/2 of moon is visible, also called a quarter moon because 1/4 of the entire moon is visible |
| New moon | no visible moon, the moon is between the sun and the Earth |
| Quarter moon | 1/2 of the circle is visible, also called the half moon |
| Waning moon | the phases when the moon seems to be getting smaller, going from full to gibbous to half to cresent to new |
| Waxing moon | when the moon seems to be getting bigger, going from new to cresentto half to gibbous to full |
| Rotate | to spin or turn, the Earth rotates or spins once every 24 hours |
| Axis | pretend line that runs through center of Earth, on which it spinstilted |
| orbit | to travel around a body in space, the Earth orbits or goes around the sun once a year (365 days), the moon orbits or goes around the Earth once in about a month (29 days) |
