FOR THE SOPHOMORES:)))))

Look the video and answer the questions:

1. What is the period of one revolutioin around the Sun?
2. Are the Earth's seasons caused by the differences from the Sun throughout the year?
3. What the term "eqauinoxes" means?
4. Is always one half of the moon illuminated by the Sun?
5. When does a solar exlipse occur?
6. When does a lunar eclipse occur?
7. Why does the moon somrtimes look like orange?
8. What is the cause of tide?