Inner & Outer Planets Vocabulary

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Across
  1. 4. An extremely steep slope/cliff located on Mercury
  2. 6. Radio detection and ranging technology sends out radio waves and analyzes the returning echoes
  3. 7. the four giant outer planets of our solar system
  4. 9. the outermost and smallest of Mars's two moons
  5. 12. Jupiter's four largest moons
  6. 13. the minimum distance at which a celestial body held together by its own gravity can approach a larger body without being torn apart by the larger body's tidal forces
  7. 15. The planet's largest impact basin in the Solar System, located on Mercury
  8. 16. A major rolling plains located on Venus
  9. 17. the innermost and largest of Mars's two moons
  10. 18. flat, disc-like structures of dust, ice, and rock particles orbiting giant planets
Down
  1. 1. The Largest canyon in the solar system located on Mars
  2. 2. The first 4 planets of the solar system which are mostly a rocky material
  3. 3. the largest moon of Saturn
  4. 5. the process where a molecule breaks apart after absorbing energy from a photon
  5. 8. Jupiter's largest moon
  6. 10. the largest volcano and tallest planetary mountain in the Solar System, located on Mars
  7. 11. fast, narrow currents of air high in the atmosphere that steer weather
  8. 14. Neptune's largest moon