Question

Why do we see only one side of the moon from earth?








A.
The moon does not rotate.







B.
The moon takes longer to rotate than to revolve around earth.







C.
The moon takes less time to rotate than to revolve around earth.







D.
The moon’s period of rotation and revolution are equal.

Answer 1

The answer is remarkable simple - because the moon does not rotate (i.e. spin on its own axis) like the earth does. Because it does not rotate we only see the side that faces us and this side faces us all the time.

Answer 2

@og_unleash That is entirely wrong

Answer 3

okay. prove how so.

Answer 4

@theeasterbunnyilove
If oyu stand still and ask a friend to walk around you ALWAYS facing you - see what happens to the friend

If oyu ask him to walk around you WITHOUT rotating about his own axis - see what happens then

Answer 5

If you look at your friend's face, then ask him to walk WITHOUT turning until he is on your opposite side - you will be looking at the back of his head

Answer 6

@OG_UnLeAsH Maybe you have not taken into account that moon orbits all the way around the earth, approximately once every 28 days....

Answer 7

I'm afraid you are not correct
The rotation of the earth about ITS axis in 24 hours is not related to the orbit of the moon or its own rotation.

Answer 8

If your argument was correct then those who have daytime while YOU have night would see the back of the moon

Answer 9

@OG_UnLeAsH It rather spoils the thread when you delete postings.

@theeasterbunnyilove have you considered the position situation of someone walking around you always facing you - what happens to them?

Answer 10

you can read about here:

http://en.wikipedia.org/wiki/Tidal_locking

Answer 11

i didnt mean to delete my post

Answer 12

i have learned new knowledge and i will be able to help in the future.

Answer 13

:-)
Let's hope easter bunny has too!

Answer 14

The answer, which no one else has provided, is D

Answer 15

@jimkay3870!
The reason no one else has provided the answer is because it is discouraged from doing so.

The hints above should have encouraged the OP to think about the question and hopefully derive the answer for themselves.

Answer 16

Well now, Mrnood, with a web site boasting "75% of questions are answered within 5 minutes" I rather suspect it is only you who discourages direct answers.

I readily agree that your approach is more sound as education, but I don't think you are the person setting overall policy here.

Answer 17

It is policy - see FAQ

It is however not practice too many answers are given.

What use is "d"?

Answer 18

@jimkay3870!
http://openstudy.com/code-of-conduct

Answer 19

Then its much worse than 'not practice.' OpenStudy has a web site that blatantly contradicts its own policy.

I'm sure you realize that everyone sees the web site banner I quoted but almost nobody reads FAQs.

Your admonitions are quixotic at best.

Answer 20

I will continue with my quixotic admonitions in the vain hope that somewhere in the western world there is SOMEONE who can be bothered to learn technology, maths and science for the CHALLENGE of it and save us from a future of 'Media Studies' and 'Events Management' graduates who can do no more than select a multichoice answer from the list of foreign imported goods they are left with