| A | B |
|---|
| ozone | blocks UV radiation. (O3) |
| Troposphere | where weather occurs |
| stratosphere | contains the most ozone of all of the atmospheric layers |
| mesosphere | where meteoroids burn up upon entry |
| thermosphere | the atmospheres hottest layer |
| exosphere | the outermost layer of the atmosphere |
| radiation | the transfer of energy through spaces by the different types of light in the electromagnetic spectrum |
| conduction | heat transfer when molecules collide |
| convection | heat transfer that occurs because of a difference in densities between substances (warm rises, cool sinks) |
| temperature | how fast or slow molecules move around |
| heat | the transfer of energy that occurs because of a difference in temperatures |
| dew point | the temperature that air must be cooled at to reach saturation |
| condensation | gas --> liquid |
| lifted condensation level (LCL) | the height at which condensation occurs in the atmosphere |
| temperature inversion | an increase in temperature with height in an atmospheric layer |
| humidity | the amount of water vapor in the atmosphere |
| relative humidity | the amound of water vapor in the atmosphere versus whet the atmosphere can hold |
| Condensation nuclei | particles such as dust and salt, which clouds form around |
| orographic lifting | cloud formation that occurs when an air mass encounters a mountain |
| stability | the ability of an air mass to resist rising |
| latent heat | stored energy in clouds |
| coalescence | the joining of small water droplets to make one larger water droplet |
| precipitation | all forms of water, both liquid and solid that fall from clouds |
| water cycle | the constant movement of water between the atmosphere and Earth's surface |
| evaporation | liquid --> gas |
