Across
- 4. It keeps the Earth's surface warm.
- 5. It is the transfer of thermal energy by collisions between particles of matter.
- 6. Transfer of energy by electromagnetic waves.
- 7. The transfer of thermal energy by the movement of particles within matter.
- 8. It is emitted from the Earth's surface.
Down
- 1. Actions carried out by humans.
- 2. It absorbs infrared radiation from the Sun.
- 3. To return light, heat, or sound, after it strikes a surface.