Physical Science Period 7 Chapter idk Jada Blanchard

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Across
  1. 3. the planets Jupiter, Saturn, Uranus, and Neptune are classified as _____ planets
  2. 6. hypothetical form of energy that exerts a negative,repulsive pressure, behaving like the opposite of gravity (2 words).
  3. 9. Copernicus created a _________ model that represented a sun centered solar system.
Down
  1. 1. a ______ is a hypothesis that is supported by the results of experimentation and observation.
  2. 2. As a nebula shrinks under the influence of gravity, it spins
  3. 4. The universe is still _________
  4. 5. The planets Mercury, Venus, Earth, and Mars are classified as _____ planets
  5. 7. Aristotle created a ________ model that represented an Earth centered solar system
  6. 8. Our sun is 8.3 light ______ away, meaning it takes light from the sun about 8 ______ to get to Earth