Across
- 6. A large cylinder-shaped object that moves very fast, used for space travel or as a weapon
- 7. An opening in the earth's crust through which lava, volcanic ash, and gases escape
- 9. An optical instrument using lenses to observe distant objects
- 10. An advantage or profit gained from something
Down
- 1. The condition of being imprisoned
- 2. Not deterred by danger or pain; brave.
- 3. Animals that live independently of people, in natural conditions
- 4. Poisonous
- 5. The branch of biology that deals with animals and animal life
- 8. A person who is trained to travel in a spacecraft