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- 1. Multiple Choice
What causes the phases of the moon?
the relative positions of the moon, Earth, and the sun
the tilted orbit of the moon
the moons period of revolution just equals its period of rotation
sunlight reflecting off Earth’s surface
- 2. Multiple Choice
What happens during a total solar eclipse?
The moon is about the same size as the sun.
The shadow of Earth falls on the moon.
A thin ring of the sun shows through.
The moon appears to fully cover the disk of the sun.
- 3. Multiple Choice
Why do we always see the same side of the moon from Earth?
because its phases are constantly changing
because its period of rotation equals its period of revolution
because half of the moon is always in sunlight
because the moon changes its position relative to Earth
- 4. Multiple Choice
Why don’t solar and lunar eclipses occur every month?
The moon’s orbit is an ellipse.
The moon’s distance from Earth changes.
The shadows do not line up correctly.
The moon’s orbit is tilted.
- 5. Multiple Choice
Spring tides and neap tides occur in patterns governed by
changes in the force of Earth’s gravity.
the type of ocean currents near where the tides occur
whether the gravity of the sun or moon exerts a stronger pull
the relative positions of Earth, the moon, and the sun (the phases of the moon).
- 6. Multiple Choice
When do the greatest tidal ranges occur?
spring tides
neap tides
high tides
low tides
- 7. Multiple Choice
What happens when the moon is waxing?
The sunlit part we see appears to get larger.
The sunlit part we see appears to get smaller
The sunlit part we see appears to stay the same
The sunlit part we see appears to go away
- 8. Multiple Choice
What is the difference between levels of ocean water at high tide and low tide called?
a tidal range
a neap tide
a spring tide
a tidal wave
- 9. Multiple Choice
What happens when the moon is waning?
The sunlit part we see appears to get larger.
The sunlit part we see appears and disappears.
The sunlit part we see appears to get smaller.
The sunlit part we see appears to stay the same.
- 10. Multiple Choice
Which of these statements best describes tides?
a water level lower than the average water level
a water level higher than the average water level
changes in water level that happen when Earth, the sun, and the moon form a straight line
the periodic rise and fall of water levels in the oceans and other large bodies of water
- 11. Multiple Choice
What happens during high tide?
The tidal range is at its minimum in a location.
The water level in the ocean drops to below average water level.
The tidal range is at its maximum in a location.
The water level in the ocean rises to above average water level.
- 12. Multiple Choice
What causes tides?
density differences in ocean water
heat from the sun, which causes winds
underwater earthquakes, volcanic eruptions, or landslides
the gravitational pull of the moon on the water at Earth’s surface
- 13. Multiple Choice
Why is the timing of tides predictable?
because winds are predictable
because the moon’s path is predictable
because ocean water density is predictable
because the sun’s movements are predictable
- 14. Multiple Choice
How often does the moon pass over a particular spot on Earth’s surface, causing tides as a result of its gravitational pull?
once every 10 seconds
once every 12 hours and 25 minutes
once every 24 hours and 50 minutes
once every 14 days
- 15. Multiple Choice
How long is the time period between a high tide and a low tide?
about 14 days
about 6 hours
about 12 hours
about 24 hours
- 16. Multiple Choice
Which statement best describes a spring tide?
the periodic rise and fall of the water level in the oceans
a tide of maximum range that takes place two times a month
the difference in levels of ocean water at high tide and at low tide
a rise in ocean water levels that takes place on the side of Earth nearest the moon
- 17. Multiple Choice
Which statement best describes a neap tide?
the periodic rise and fall of the water level in the oceans
a rise in ocean water levels that takes place on the side of Earth nearest the moon
a tide of minimum range that takes place two times a month
the difference in levels of ocean water at high tide and at low tide
- 18. Multiple Choice
During which two phases of the moon do spring tides take place?
new moon, full moon
new moon, first quarter moon
third quarter moon, full moon
first quarter moon, third quarter moon
- 19. Multiple Choice
During which two phases of the moon do neap tides take place?
new moon, full moon
new moon, first quarter moon
third quarter moon, full moon
first quarter moon, third quarter moon
- 20. Multiple Choice
The phases of the moon are the regular changes in how the moon looks from Earth. In which phase is the moon not visible from Earth?
waxing gibbous
waning crescent
new moon
waxing crescent
- 21. Multiple Choice
Just as Earth moves around the sun, the moon revolves around Earth. About how many Earth days does it take for the moon to travel around Earth?
about 7 days
about 28 days
about 24 hours
about 365 days
- 22. Multiple Choice
Occasionally, one space object travels through the shadow of another space object. When the moon moves between the sun and Earth casting a shadow on Earth, which solar system event is taking place?
a full moon
a crescent moon
a solar eclipse
a lunar eclipse
- 23. Multiple Choice
Sometimes the moon looks like a crescent. At other times, the moon looks like a half circle. What makes it possible for you to see the surface of the moon from Earth?
The moon gives off its own light.
Light from the sun is reflected by the moon’s surface.
Light from Earth is reflected by the moon’s surface
The moon absorbs sunlight during the day and glows at night
- 24. Multiple Choice
Oksana observed the appearance of the moon every week for a month. She sketches her observations. Which of these diagrams BEST shows how the moon’s appearance could have changed during the month Oksana performed her investigation?
- 25. Multiple Choice
The diagram shows what happens during a solar system event. Which part of the diagram is labeled Y?
the umbra
the eclipse
the satellite
the penumbra
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