Space Science Unit #4 Review

2. caused by the interaction of solar wind, earth's magnetic field and chemical particles in the atmosphere
3. path that the moon’s umbral shadow take across the earth during a total solar eclipse
8. occur as a result of earth's axial tilt as it travels around the sun
11. days on which the earth is not tilted toward or away from the sun
13. the line separating day from night on a celestial body
15. most common aurora color
16. days on which the earth is tilted at a maximum toward or away from the sun
18. the phase of the moon that we see is shrinking from night to night
19. 5 degree difference between the plane on which the moon moves in relation to that of the earth
20. the portion of the lit side of the moon that can be seen from earth
21. the number of high tides that occur on earth each day
23. eclipse which occurs when the earth casts its shadow on the moon
25. light outer shadow that occurs during an eclipse

1. the phase of the moon that occurs between a new moon and the first quarter moon
4. this is the same for the moon’s orbit around the earth and its spin around its axis
5. the phase of the moon that we see is growing from night to night
6. the phase of the moon that occurs halfway between the new moon and the full moon
7. Length of solar cycle of sun’s high and low activity
9. the phase of the moon that occurs between the first quarter moon and the full moon
10. eclipse which occurs when the moon casts its shadow on the earth
12. phenomena caused by the moon’s gravitational pull, and, to a lesser extent, the sun’s gravitational pull
14. another term for axial tilt
17. the moon is in ________ rotation around the earth
22. collisions with these particles at high altitudes cause red auroras
24. dark inner shadow that occurs during an eclipse