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1. 
The Earth's moon is the _____ in the solar system.
A.
every twenty seven days
B.
from one point in one side of a sphere
C.
orbit
D.
largest moon
2. 
Measuring from one side to the other of a circle gives us _____
A.
Mass is the amount of matter in an object
B.
Diameter of a circle
C.
Orbit of the moon
D.
The moon changes shapes based on its position to the sun and Earth.
3. 
We can see the moon at night because_____
A.
it reflects the sun's light
B.
it reflects the earth's light
C.
it is 1/81 of the Earth's mass
D.
it has a diameter 1/4 of the earth
4. 
Why can't we see the whole moon all the time?
A.
Because the moon is hidden on the clouds, so it is not visible on Earth all the time.
B.
Because the moon changes shapes based on its position to the Earth and the sun.
C.
Because the moon is not designed to be seen in its full shape every day.
D.
The moon shows its full size to Earth only once a month, and every four years once a week.