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What You
Need:
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A clear night with a bright moon
· Two friends
· A large yard or park
Question:
Why does the moon seem to stay in one place no matter how
fast or far you go?
1.
The next time you are on a car trip at night, look up and
watch the moon. It seems like the moon is right alongside
you. No matter if the car goes fast or slowly. No matter if
you drive ten miles or a hundred.
2.
You and two friends can explore why this happens on a smaller
scale in a large yard or park.
3.
First, have the two friends stand in a straight line as far
apart as possible.
4.
Then stand about 10 feet away from the friend who is nearer
to you.
5.
Walk at a right angle away from your friends. Keep your head
turned toward your friends so you can see them.
6.
You will soon observe that the nearer friend goes out of your
sight while the distant friend remains in sight.
A
Scientific Explanation
The moon is such a great distance away (239,000 miles), that
it is like your distant friend--it stays in your sight. You'd
have to travel to the other side of the Earth to lose sight
of the moon!
Something
EXTRA! You can do for fun:
Try this with the stars or the sun. Remember not to look directly
at the sun because doing so can damage your eyesight.
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