Astronomy

2. the outer planets are larger and are known as _______ giants
3. the path a celestial object follows as it revolves around another object
7. imaginary line that runs through the center of the Earth from pole to pole
8. moon phase where the moon looks a bit like a hunchback
10. a large system composed of gasses, stars, planets, moons and other celestial objects
11. the pole that receives 24 hours of daylight when the northern hemisphere is tilted toward the sun
14. the gravitational pull between two objects is determined by their mass and...
16. movement of Earth around its axis
17. changes in the amount of light reflected off the moon as it revolves around Earth
18. imaginary line around the center of the Earth dividing north and south

1. a measure of the amount of matter in an object
4. seasons on earth are a result of the tilt of Earth on its axis and this type of movement
5. occurs every four years to make up for the 365 1/4 days it takes Earth to revolve
6. a lunar cycle where the light is increasing on the right
7. gravitational pull between two objects as a result of their _________ to each other
9. we only ever see the ________ side of the moon
12. season that occurs when the Earth is tilted away from the sun
13. type of eclipse that occurs when the moon is between the sun and the Earth
15. the two hemispheres receive ________ amounts of light during the spring and fall