Planets study guide

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Across
  1. 2. goldilocks planet Rocky planet Extensively covered with large oceans of liquid water and ice caps in polar regions Protective atmosphere consisting predominantly of nitrogen and oxygen and has a magnetic field. These help shield the this planets surface from harmful solar radiation Scientific evidence indicates this planet is about 4.5 billion years old
  2. 4. like dirty snowballs made up of dust, ice, frozen gases tail always points away from the sun
  3. 6. The rotation of this planet causes day and night The phases of this thing revolving around a planet are the result of the position our star, the thing that revolves around a planet, and this planet are in relation to each other The tilt of this planet causes the angle that our star's light hits the surface to vary during the year. This causes changes in the seasons. tides are the result of the gravitational pull of the thing that revolves around a planet and our star on the surface waters of this planet. Write the planet, our star, and the thing that revolves around a planet. no spaces.
  4. 7. provided powerful and confounding observations
  5. 10. has too thick an atmosphere for humans to live on it
  6. 11. closer to the sun, rocky, and small
  7. 12. has robots on it
Down
  1. 1. farther from the sun, large, made out of gas
  2. 3. large space rocks that orbit the sun found in a belt between the inner and outer planets
  3. 5. sometimes called a shooting star chunk of rock or dust that is illuminated upon entering the atmosphere
  4. 8. main source of energy for earth, made out of super heated gas and plasma
  5. 9. Depends on the mass of interacting objects Keeps the planets in motion around the sun Acts everywhere in the universe