The Solar System: Lesson 1 & 2 Review

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Across
  1. 2. Warming of the atmosphere because of trapped heat energy from the sun known as the _____ effect.
  2. 5. The only planet that can support life.
  3. 6. Known as the "morning star" or "evening star"
  4. 7. The solar system is held together because of ______.
  5. 8. This planet is a reddish color with 2 small moons.
  6. 9. Large object in space that orbits a star such as the sun
  7. 12. The sun is made up of two gases: Hydrogen and _____.
  8. 13. A star such as the sun and all the objects that revolve around it in space
  9. 15. Natural satellite that orbits a planet.
Down
  1. 1. Closest planet to the sun.
  2. 3. A glowing ball of hot gas that makes its own energy and light
  3. 4. Envelope of gas surrounding an object in space.
  4. 10. Dark area on the sun's surface that gives off less energy than the rest of the sun.
  5. 11. These planets include: Mercury, Venus, Earth and Mars
  6. 14. The largest object in the solar system