Across
- 3. the position the moon must be in for a lunar eclipse to occur
- 5. When the amount of illumination on the Moon is decreasing
- 8. occurs when the moon is between the earth and sun and appears invisible to us from earth
- 9. an imaginary line that an object spins or rotates around
- 10. the circular path of an object as it revolves around another object
- 13. Earth has seasons because its axis is _________
- 14. the second force that works with gravity to keep the planets in orbit
- 16. a type of tide that occurs when the sun, moon, and Earth are in a straight line producing an extreme tide
- 18. the days are _________ during summer than during winter
Down
- 1. When the amount of illumination on the Moon is increasing
- 2. has the most influence on the high and low tides of the Earth’s oceans
- 4. when the moon passes directly behind the Earth and into its shadow
- 6. a force that exists between any two objects that have mass
- 7. the temporary blockage of sunlight by the Moon as it travels between Earth and the Sun
- 11. one ___________ of earth is equal to one day
- 12. Produced when the sun, moon, and Earth align at a 90° angle producing the smallest rise and fall of tidal levels
- 15. the strength of gravity relies on the mass and _____________ between the objects
- 16. For part of our orbit the northern half of Earth is tilted toward the Sun resulting in ____________
- 17. any moon that appears more than half lighted but less than full