| A | B |
|---|
| Humidity | The amount of water vapor in the air |
| Relative Humidity | The amount of water vapor the air is holding at a given temperature compared to the total amount that it could hold at that temperature |
| Evaporation | The change of a liquid to a gas |
| Condensation | The change of a gas to a liquid |
| Cloud | Billions of timy drops of water that condense from the air |
| Precipitation | Any form of water that falls from the air to the Earth's surface |
| Rain Gauge | A device used to measure precipitation |
| Snow | Solid form of precipitation made of ice crystals |
| Hail | A solid form of precipitation made of ice ususally ranging from the size of a pea to the size of a golf ball |
