When the moon's shadow falls on Earth, what event occurs?
A solar eclipse
When the Earth's shadow falls on the moon, what event occurs?
A lunar eclipse
What is the darkest part of a shadow called?
Umbra
What is the larger, less dark part of a shadow called?
Penumbra
Why does the moon have phases?
The amount of the lit half of the moon that is seen from Earth changes.
What occurs more often: a total or partial lunar eclipse? Why?
Partial because the penumbra is larger than the umbra, so the moon enters it more often.
About how long passes between high tides?
12.5 hours
The least difference between high and low tides occurs during which type of tide?
Neap tide
How are the sun, Earth, and moon arranged during a spring tide?
They are in a line
How are the sun, Earth, and moon arranged during a neap tide?
They form a 90* angle.
What caused the moon's craters?
Meteoroids
What are the light-colored highlands on the moon?
Mountains
Why do temperatures vary so much on the moon?
The moon has no atmosphere, so it does not hold heat from the sun.
Can more people see a total solar eclipse or a total lunar eclipse? Why?
A total lunar eclipse because a lunar eclipse can be seen anywhere the moon is visible. A total solar eclipse can only be seen within the umbra.
What causes tides?
Differences in how much gravity from the moon and the sun pulls on different parts of Earth
How does the size of the moon compare to the size of Earth?
It is much smaller.
