| A | B |
|---|
| Stratus Clouds | low flat clouds that form in layers. Altitude less than 2,000 meters |
| Cumulus Clouds | Puffy white clouds that look like cotton balls. Altitude between 2000-7000 meters. |
| Cirrus Clouds | High High wispy clouds made of ice crystals.Altitude between 7000-13,000 meters. |
| atmosphere | layer of gasses that surround the earth |
| troposphere | bottom layer of the atmosphere, extending from the ground level up to about 16 kilometers above the earth. |
| stratosphere | second layer of the atmosphere, includes the ozone layer |
| mesosphere | third layer of the atmosphere, it is the coldest layer |
| ionosphere | layer of the atmosphere containing ions or electrically charged particles |
| altitude | height above the earth's surface |
| fog | stratus clouds that form near the ground |
