Across
- 2. rocks that have changed shape because of heat and pressure
- 3. one third the size of Earth, rotates around the earth in a month
- 5. rock formed from the "cementing" together of materials
- 7. outer layer of the Earth
- 8. an instrument that helps us to see outer space
- 9. first American to orbit the Earth
- 10. phase of the moon in which we see all of the side of the moon facing the sun
Down
- 1. Scientist from Denmark who studies the Earth
- 3. next layer under the top layer of Earth
- 4. phase of the moon in which the dark side faces us, so we do not see it.
- 6. rocks formed from the cooling of hot material