| A | B |
|---|
| Eight minutes | time it takes Sun's energy to reach Earth |
| Radiation | energy transfer by waves |
| Visible | most of Sun's energy is this |
| Thermal energy | another name for heat |
| Ultraviolet light | causes sunburn and skin cancer |
| Infrared light | sensed by us as warmth |
| Fifty percent | amount of Sun's energy that actually reaches Earth's surface |
| Greenhouse effect | traps heat and keeps it on Earth |
| Conduction | energy transfer by contact |
| Convection | energy transfer in currents of liquid and gases |
| Temperature inversion | causes air pollution to build up |
| Ozone layer | located in the stratosphere |
| Unstable air | builds storm clouds leading to thunderstorms |
| latent heat | caused when water changes form |
| reflect | to bounce off |
