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The abrupt change (line) between light and dark on the moon is called the terminator. The shadow on the moon is there because the sun only lights up half of the moon (which is a sphere) at a time.
Also, people on earth always see the same side of the moon. This is because the moon rotates at the same rate as it orbits (kinda tricky). This phenomenon is called tidal locking. The side of the moon we never see interestingly enough has the biggest impact crater in our solar system.
So basically as the moon revolves around the earth and the terminator moves across the moon, more and more of the bright part is 'clipped away' until we eventually end up with a moon that looks totally black. This happens at the end of every month and is called the new moon.
Here is the link to the wikipedia article.
http://en.wikipedia.org/wiki/Lunar_phase
What else can I help you with?
What are the names of the two parts of the moon's shadow?
The two parts of the moon's shadow are the umbra, which is the dark central region where light is completely blocked, and the penumbra, which is the lighter outer region where only partial light is blocked.
What is the line between the light and dark parts of the moon?
It's the line where part of the moon doesn't light the night. and, if you look, that line serves a purpose of telling what kind of moon night it is without looking at a calendar.
Is the moon always dark?
No, the moon is not always dark. The moon shines because it reflects sunlight that falls on its surface. However, the moon does have phases where it appears to be dark, such as during a new moon when the side facing Earth is not illuminated by the sun.
Does the moon have both sun light and darkness?
one side of the moon receives light from the sun and the other will never get light..that side is called the dark side of the moon..so yes the moon is dark and also receives sunlight...(the moon does not make any of its own light)
What are the Moon's light-colored highlands?
Cast shadows from crater edges, etc, give the dark parts, while the uncratered highlands reflect light broad enough to appear light colored.
What are the dark and light parts of the moon are called?
Far side
What is the light between the light and dark parts of the moon?
Terminator or Terminus depending on how Latin you are.
The line between the light and dark parts of the Moon is called the what?
terminator
What is the name of the line between the light and dark parts if the moon?
Terminator
What are the names of the two parts of the moon's shadow?
The two parts of the moon's shadow are the umbra, which is the dark central region where light is completely blocked, and the penumbra, which is the lighter outer region where only partial light is blocked.
Will it be light or dark on a new moon?
Dark.
What are the light and dark areas on the moon?
the light areas of the moon are called the highlands. the dark areas are called maria.
What is the line between the light and dark parts of the moon?
It's the line where part of the moon doesn't light the night. and, if you look, that line serves a purpose of telling what kind of moon night it is without looking at a calendar.
When it occurs when the moon waning and waxing?
Half og the moon faces the sun and thus appears bright. Not always the same part, every part has its light and dark and there is no 'dark side' of the moon. Waxing and waining are changes in the parts of the moon where it is day.
Is there life on the dark side of moon?
There is no life anywhere on the moon - light or dark side.
Is the new moon dark or light?
The color of the new moon is very dark since it is the opposite of a full moon.
Is the moon always dark?
No, the moon is not always dark. The moon shines because it reflects sunlight that falls on its surface. However, the moon does have phases where it appears to be dark, such as during a new moon when the side facing Earth is not illuminated by the sun.
