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Question 1

Question 1. Why is gravity important to the solar system? (at least 3 reasons). Keeps the planets in orbit around the sun. Causes velocity of planets to keep changing. Causes a curved path. Question 2. What affect does gravity have on a planets atmosphere.

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Question 1

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  1. Question 1 • Why is gravity important to the solar system? (at least 3 reasons) • Keeps the planets in orbit around the sun. • Causes velocity of planets to keep changing. • Causes a curved path

  2. Question 2 • What affect does gravity have on a planets atmosphere. • Low gravity will mean low atmospheres or no atmosphere. • Gravity even keeps an atmosphere together.

  3. Question 3 • What is the difference between rotation and revolution? Give an example of something that does both at the same time. • Rotation is something spinning on it’s own axis • Revolution is something moving around another object. • A top, the tea cup ride.

  4. Question 4 • Describe Kepler’s 3 laws in your own words. Draw pictures to help explain your answer. • Planets orbit in an elliptical path. • Planets move faster when closer to the sun. • The further away from the sun in longer the period of revlolution

  5. Question 5 • When do scientists use AUs? • To make it easier to explain the large distances between planets and the sun.

  6. Question 6 • What is a nebula? How was one involved in the formation of the solar system? • Giant cloud of gas and dust. • The nebula contracted as gravity pulled materials closer together. • Areas become denser and temperatures increased creating a sun.

  7. Question 7 • How did the moon form? • An asteroid hit Earth and “broke” off a portion.

  8. Question 8 • What causes eclipses? • When on celestial body lines up in front of another.

  9. Question 9 • What happens during a lunar eclipse. These can only happen during __________. • Occurs only during full moons. • Earth is between Sun and moon. • Portions of the moon are shaded.

  10. Question 10 • What happens during a solar eclipse. These can only happen during __________ • The moon is between Earth and Sun. • Moon casts a shadow on Earth. • The shadow is small so it can only be seen on a small area of Earth. • This only happens during the day.

  11. Question 11 • Why does the moon look different if we always see the same part? • As the moon revolves around Earth, the illuminated portion appears to change.

  12. Question 12 • List the planets in order of closest to farthest from the sun. • Mercury • Venus • Earth • Mars • Jupiter • Saturn • Uranus • Neptune

  13. Question 13 • Which planets are the inner planets? How are they similar? • Mercury • Venus • Earth • Mars • They have rocky compostions, craters on their surfaces and are warmer. • They are smaller

  14. Question 14 • Which planets are the outer planets? How are they similar? • Jupiter • Saturn • Uranus • Neptune • They are larger, gaseous, and colder. • Can be found beyond the asteroid belt.

  15. Question 15 • What planet is the biggest, which is the smallest • Biggest = Jupiter • Smallest = Mercury

  16. Question 16 , 17, 18

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