Name: KEY H.R.: 111 & 223 & 225 & 309

Date: 2015 May 21 #B47-KEY

Sun, Earth, and Moon Mini-Quiz KEY 1. Earth to completely rotate on its axis 2. It takes less time to make a complete rotation on its axis. 3. the gravitational pull between Earth, Sun and Moon 4. a month 5. Earth's rotation 6. Full 7. the Moon's orbit (revolution) around Earth 8. always 50% or varies from 0% to 100% or varies from 0% to 50% (see below) 9. Half of Earth’s Moon is always facing towards the Sun, so that half is lit by the Sun. Half of Earth’s Moon is always facing away from the Sun, so that half is not lit by the Sun. The only time that less than half of Earth’s Moon is lit is during a lunar eclipse, when some or all of the Moon might be in Earth’s shadow. 10. C if you had three choices / D if you had four choices 11. New 12. A) morning B) Shadows start are longest at sunrise, shortest around noon, and longest again at sunset. The shadows get shorter from sunrise until around noon, which we call “morning”. Bonus: A few facts about the Persian calendar: *Persian New Year is the vernal equinox (first day of spring). *New seasons begin with new months. *All of the 31-day months are in a row, then all of the 30-day months are in a row. *It’s based on observable phenomena, not historical uncertainty.