Earth in Space
Gravity and Motion (1 Phases)
Phases and Eclipses
Tides and Eclipses
Earth's Moon
100
24 hours
How long does Earth's rotation take
100
gravity
What is the force that attracts all objects to each other
100
phases
What are the different shapes of the moon seen from Earth
100
when the sun, Earth, and moon are nearly in a line
When are tides highest?
100
ancient lava flows
What was maria formed by
200
Earth's rotation on its axis
What causes day and night
200
inertia
What is the tendency of a moving object to continue moving in a straight line or a stationary object to remain in place called
200
an increasing amount of the lit side of the moon
What is waxing, from new moon phase to full moon phase
200
when the sun's pull is at right angles to the moon's pull
When do neap tides occur
200
near the poles
What might water be found on the moon
300
its axis is tilted as it moves around the sun
Why does Earth have seasons
300
the masses of the objects and the distance between them
What does the strength of the force of gravity depend on
300
full moon
During what phase can a lunar eclipse occur
300
differences in how much the moon and the sun pull on different parts of Earth
What mainly causes tides
300
has no atmosphere
Why does the temperature of the moon's surface vary so greatly from day to night
400
the sun is farthest south
When does the summer solstice occur in the Southern Hemisphere
400
gravity and inertia
What are the two factors that combine to keep Earth and the moon in their orbits
400
because the moon rotates once for each revolution around Earth
Why do we never see the far side of the moon from Earth
400
only within the moon's umbra
Where is a total solar eclipse visible from
400
about one-fourth the diameter of Earth
How large is the moon compared to Earth
500
neither hemisphere is tilted toward or away from the sun
When does an equinox occur
500
how much of the sunlit side of the moon faces Earth
What does the phase of the moon you see depend on
500
the moon's umbra only covers a small area on Earth's surface
Why are you less likely to see a total solar eclipse than a total lunar eclipse
500
the moon must be directly between Earth and sun
What has to happen for a solar eclipse to occur
500
Galileo saw this
What is the moon covered with round pits called craters
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