| Cirrus | The clouds that are high white thin |
| Cumulus | The cloud that comes in a pile of fluff |
| Stratus | The cloud that comes as layers and covers the sky |
| Super cooled water | water in the liquid state bellow 0 |
| super saturated water | air is saturated with 100% relative humidity |
| collision coalesence process | The mechanism that forms raindrops |
| High cloud | cirrus cirrostratus and cirrocumulus |
| middle cloud | altocumulus |
| low cloud | stratus stratocumulus nimbostratus |
| how does precipitation form? | cloud dropplets must grow by one million times |
| sleet | The fall of small particles of clear to translucent ice |
| glaze | super cooled raindrops fall through subfreezing air near the ground |
| hail | small ice pellets grow by collecting super cooled raindrops as they fall through a cumulonibus cloud |