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II
III
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100
imaginary line that divides Earth into its northern and southern hemispheres
What is equator
100
day when Earth’s axis is not leaning toward or away from the Sun
What is equinox
100
path an object follows as it moves around another object
What is orbit
100
motion of an object around another object
What is revolution
100
spinning motion
What is rotation
200
line on which an object rotates
What is rotation axis
200
day when Earth’s rotation axis is the most toward or away from the Sun
What is solstice
200
large, dark, flat areas on the Moon
What is maria
200
lit part of the Moon or a planet that can be seen from Earth
What is phase
200
occurs when less of the Moon’s near side is lit each night
What is waning phase
300
occurs when more of the Moon’s near side is lit each night
What is waxing phase
300
occurs when the Moon moves into Earth’s shadow
What is lunar eclipse
300
lighter part of a shadow where light is partially blocked
What is penumbra
300
occurs when the Moon’s shadow appears on Earth’s surface
What is solar eclipse
300
daily rise and fall of sea level
What is tide
400
central, darker part of a shadow where light is totally blocked
What is umbra
400
Not only is the summer solstice the longest day of the year, it is also the day on which ___________
What is the Sun appears to be highest in the sky
400
The seasons are caused by ___________.
What is the direction Earth’s rotational axis is pointed with respect to the Sun
400
The time for one rotation of the Moon is 27.3 days. What is the time revolution?
What is 27.3 days
400
What formed the craters on the Moon?
What is impacts from objects in space
500
Why don’t lunar eclipses occur every full moon?
What is the Moon’s orbit around Earth and Earth’s orbit around the Sun are not in the same plane, so the three bodies only line up occasionally.
500
Why don’t solar eclipses occur every new moon?
What is the Moon’s orbit around Earth and Earth’s orbit around the Sun are not in the same plane, so the three bodies only line up occasionally.
500
What force is mostly responsible for tides?
What is the gravity of the Moon
500
Spring tides--
What is occur at new and full moons, and have the highest high tides and lowest low tides.
500
When do neap tides occur?
What is at first- and third-quarter moons, and have the lowest high tides and highest low tides
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