Across
- 3. It is the layer that the Aurora borealis is in.
- 4. This is a layer of electrons that reflects radio waves.
- 6. It is the layer that contains something that blocks solar radiation.
- 9. This protects against solar radiation.
- 10. It is debated where the end of this layer is
- 11. This is the edge of space.
- 12. This is the barrier between the troposphere and the stratosphere.
Down
- 1. an example of this is "cloudy"
- 2. It is about 80% of the atmosphere.
- 5. It is the layer that slows down meteors.
- 7. A stream of greenish purplish lights in the sky.
- 8. these are chunks of rock hurtling towards planets