GKE Gravity in Space

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Across
  1. 3. The first person to describe the law of gravity as an interaction between two masses.
  2. 5. The minimum speed required to leave Earth's orbit.
  3. 10. The gravitational __________ on Mars is 3.7 m/s/s.
  4. 11. The force of gravity depends on the size of the masses and the ________ between them.
  5. 14. The International _________ orbits the Earth at about 400km above the Earth.
  6. 15. Newton realized that gravity explained ______ motion as well as the movement of objects on Earth.
Down
  1. 1. A large object held in Earth's orbit by the force of gravity.
  2. 2. A force of attraction between masses.
  3. 4. Astronauts feel this way because they are in free fall.
  4. 6. The force on an object moving around another object, pulling it toward the center.
  5. 7. Large _____+_ are pulled toward Earth with more force than smaller ones.
  6. 8. Newton's _________ was a thought experiment that was used to understand the effect of gravity.
  7. 9. The moon affects ________ on Earth because of its gravitational pull on the Earth.
  8. 12. The color of rocks on Mars.
  9. 13. You cannot "escape" gravity because it is a ____ surrounding the Earth.