Unit 4 Vocab

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Across
  1. 5. the geological process of the Earth's crust stretching and pulling apart.
  2. 9. the process where an unstable atomic nucleus of a star or other celestial object spontaneously transforms into a different nucleus, releasing energy or particles.
  3. 10. the theory that the Earth's outer shell is broken into large.
  4. 14. the process where gases in a planet's atmosphere trap heat from its star.
  5. 15. is a natural light display in the sky, like colorful curtains or rays.
  6. 16. Waves energy vibrations that travel through a celestial body's internal layers.
  7. 17. energy vibrations that travel through a celestial body's internal layers
Down
  1. 1. a measure of how much mass (matter) is packed into a certain volume (space).
  2. 2. a process that occurs on Earth (and potentially other terrestrial planets with plate tectonics), not in space.
  3. 3. create their own food (sugars) and oxygen from sunlight, water, and carbon dioxide.
  4. 4. A supercontinea that existed hundreds of years ago.
  5. 6. the gaseous envelope surrounding a celestial body.
  6. 7. primary seismic waves that are used to study the internal structure of planets and moons within our solar system.
  7. 8. a natural light display in the sky, like colorful curtains or rays.
  8. 11. the transfer of heat through the movement of fluids (liquids or gases).
  9. 12. Spheroid a slightly flattened sphere that bulges at its equator, like a squashed ball.
  10. 13. the type of seismic waves that are used to study the internal structure of planetary bodies.