NAME ________________________________________________ PERIOD ________________
PHASES, ECLIPSES AND TIDES STUDY GUIDE (85)
1. What keeps the moon in orbit around the earth? ___________gravity__________________________
2. Read the table below and answer the question. What date will the next new moon be seen?
Approximately 9/20
Lunar phase
Full moon
Third or last quarter
New moon
Date
August 9
August 16
August 23
3. What makes it possible for you to see the surface of the moon? Circle one
Moon gives off its own light
earth’s light is reflected on the moon
sun’s light is reflected on the moon
4. What keeps satellites in orbit around earth? ____________gravity_____________
5. Circle the line that has the correct order during a full moon.
a. earth, moon, sun
b. sun, earth, moon
c. sun, moon, earth
d. moon, earth, sun
G
G
6. Using the picture at the left answer the question
below.
a. What position of the moon could result in a
lunar eclipse? __________4_____________
b. What position of the moon could result in a
solar eclipse? __________2______________
C
c. What position of the moon would show a
new moon? ___________2______________
d. What positions of the moon are quarter
moons? _______1__________ _________3_____________
e. Put a “C” on the two positions where the crescent moons would be.
f. Put a “G” on the two positions where the gibbous moons would be.
C
7. It takes about ___________29_____________ days for the moon to revolve around the earth.
8. What phase of the moon is not visible from earth? _________new moon___________________
9. Which list below shows the moon at a solar eclipse?
a.
b.
c.
d.
Sun, earth, moon
Earth, sun, moon
Sun, moon, earth
Moon, sun, earth
10. The differences in the appearance of the moon over time is due to (pick one)
a. The speed of the moons orbit
b. the position of the moon in its orbit around Earth
c. the rotation of the moon on its axis
11. Which of the diagrams below best shows how the moon’s appearance could have changed
during a month?
a.
b.
c.
12. I am looking at the sky and see a third quarter moon. Draw what I saw. (see pg. 157)
13. Define umbra: darkest part of a shadow
14. Define penumbra: lighter shadow
13. During an eclipse, which shadow would you need to be in to see a total eclipse?
___Umbra___________
14. Label the pictures below with the following words:
Umbra
penumbra
type of eclipse
phase of the moon
lunar eclipse/full moon
solar eclipse/ new moon
15. Define tidal range: difference between the levels of ocean water at high tide and low tide
16. Which special tide is shown in the picture below? ___________neap________________
Use this picture to answer questions 16 – 18.
17. During this tide will there be a large tidal range or a smaller tidal range? Small daily tidal range
18. During which phases of the moon does this special tide take place? Quarter moons
Use this picture to answer questions 19 – 21.
19. Which special tide is shown in the picture above? _____spring___________
20. Will this tide have a large tidal range or a smaller tidal range? Large daily tidal range
21. During which phases of the moon does this tide take place? New and full
22. What causes tides? By the difference in gravitational pull of the moon (and sun) across earth
23. How much time passes between a high tide and the next low tide?
6 hours
6 hours 12 minutes and 30 seconds
6 hours and 50 minutes