Unit 3 Common Assessment Review

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Unit 3 Review- Answers
1. The area around the poles experiences the greatest change in daylight hours because of the tilt
of the Earth’s axis.
2. The tilt of the Earth allows more direct light to hit us during the summer months.
3. Northern hemisphere is above equator. Southern is below. When Northern hemisphere is in
summer, southern is in winter, and vice versa.
4. Day/night every 24 hours
5. Seasons
6. 12
7. Because we rotate on an axis…the sun doesn’t move.
8. Winter, spring, summer, fall
9. SNEF= Sun, new moon, earth, full moon; counterclockwise revolution ALWAYS
10. New, waxing crescent, first quarter, waxing gibbous, full, waning gibbous, third quarter, waning
crescent and back to new moon
11. They are in a straight line.
12. 4 weeks
13. Spring tides occur when the sun, moon and Earth are all in a line…new and full moons. The
result is super high and very low tides.
14. Neap tides occur during 1st and 3rd quarter moons, when the Earth and sun and moon are at
right angles to one another. The result is very weak high and low tides.
15. Straight line
16. Full
17. Third quarter
18. Gravitational pull of moon and sun
19. Gravity
20. Full/new moons; 1st/3rd quarter moons
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