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Moon Study Guide

QuestionAnswer
1. Know the diagram of the moons structures(don't memorize the words around the circle, know where they are on the moon) SEE STUDY SHEET
2. What is the diameter of the moon? 3475 km
3. Compare the gravity on the moon to the earth's gravity. The moon's gravity is 1/6 of that of the earth's gravity.
4. What is the difference between mass and weight? mass is the amount of matter you are made up of-it does not change weight-is the effect of gravity on the mass
5. Why does the moon not have much atmosphere? because it has low gravity /(occulting of stars-moon passes in front of other stars
6. What are maria? dark areas on the moon
7. List all the structures found on the moon. craters-round pits-ranges from inches to hundred of km-names from Greek words/mare-dark areas on the moon-derived from Latin word for seas-singular mare/mountains-named after mountains on the earth-arise abruptly from plains of maria to heights of 8 km.
8. What is the largest sea on the moon? Mare Imbrium (1100 km. in diameter)
9. What is the average distance of the moon from the earth? 385,000 km
9. Farthest point? apogee-406,000 km from the earth
9. Nearest point? perigee-356,000 km from the earth
10. Compare the moons rotation to its revolution? almost the same (rotation is 27 1/2 days; revolution is 29 1/2 days)
11. From the earth, how long does it take the moon to make 1 revolution? 29 1/2 days
12. Know the different phases of the moon, when they occur in the cycle and what the name means? New Moon-can't see the moon/Waxing Crescent (1st week)/First Quarter-day 7/Waxing Gibbons 2nd week/full moon day 14 3/4/third quarter 22-waning gibbons third week/Third Quarter day 22 1/8/New Moon 29 1/2
13. What is the moon's terminator? The line between light/there is no twilight zone (are where light gradually dims/it is a sudden change
14. How long does a total solar eclipse last? several minutes to 30 seconds
14. Lunar eclipse? up to three hours and 45 minutes
15. What do we cal valleys on the moon? rills
16. Be able to figure a persons weight on the moon? gravity is 1/6 that of the earth/120 pounds person weighs 20 pounds on the moon
17. Know the common names for all the Maria on the moon as well as the Latin names. SEE STUDY SHEET
18. What is the name of the most spectacular crater on the moon? Tycho (by the South Pole) has bright streaks called rays-some rays are 1600 km long/Maria-dark areas on the moon-Maria derived from Latin word for seas-singular-mare/mountains-named like those of the earth
19. What is a harvest moon? first full moon autumnal equinox Sept. 21
19. Hunters moon? next full moon after Harvest moon
19. When do they occur? harvest-automnal equinox Sept 21/ Hunter's -month later
20. How are the sun, earth, and moon lined up in a solar eclipse? moon covers the entire disk of the sun sun-moon-earth
20. Lunar eclipse? Earth comes between sun and moon; blocks the reflection of the sun on the moon
21. What is Bailey's Beads? pinpoints of light shine around the edges of the moon; caused by craters
22. What is the Diamond Ring Effect? Last beam of light just before a total solar eclipse (may be able to see the sun's atmosphere
23. How is the near side and and the far side of the moon different? near side faces the the earth and far side faces away from earth
24. Is the near side of the moon and the dark side of the moon the same thing? NO! BACK SIDE AND DARK SIDE ARE NOT THE SAME THING
24. Why or why not? The near side faces the earth and the dark side faces the sun
25. What are cusps and in what direction do they point? horns of crescent moon/they point away from the sun
26. What is the revolutionary period of the moon from point outside the earth? 27 1/2 days
27. What is the moon's perigee? nearest point to the earth 356,000 km
27. Apogee? farthest point from the earth 406,000 km
28. Compare the diameter of the moon to some area on the earth? 3475 km/ less than the width of the USA
29. Compare the shape of the moon to the earth. almost a perfect sphere
30. Why does the same side of the moon face the earth? revolves at the same rate that it rotates
31. What shape does the moon's orbit have? almost a perfect sphere
define eclipse cutting off the light of a celestial object with another
Created by: Matthew Hammond
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