Across
- 2. The color of the powder of a mineral when it is rubbed on a streak plate.
- 3. A force that pulls things to the center of the Earth.
- 5. A type of rock that forms from layers of sediment.
- 7. A large rocky object that orbits a planet.
- 10. The state of the atmosphere at a certain place and time.
- 11. A preserved organism in layers of sedimentary rock.
- 13. A ball of hot gases that gives off light and other energy.
- 16. A form of water (hail, rain, sleet, snow) that condenses in the atmosphere and falls to Earth.
- 17. The turning of an object on its axis.
Down
- 1. The constant movement of Earth's water from the surface to the atmosphere and back again.
- 4. A type of rock formed by cooled magma.
- 5. A system of planets and other bodies that orbit a star.
- 6. The motion of one object around another object.
- 8. The process by which rocks and other surfaces are broken down.
- 9. A large nearly round space object that orbits a star.
- 12. The closest star to the Earth and the center of our solar system.
- 14. A star system that contains large groups of stars.
- 15. Everything that exists throughout space.