The earth revolves around the sun, so when the sun is out how can the moon be out if it is suppose to be on the other side of the earth at that time because sometimes you can spot the moon at 2:00 in the afternoon.
209464
The earth orbits the sun; the moon orbits the earth. The cycles of rotation are different meaning that the moon will orbit the earth many times every year. This means that it will very often be in a position to be seen during the day. The moon itself has no axial rotation so on earth we always see the same side of the moon.
179533
The phases of the moon occur due to its relative position to us and the sun. The sun always shines on half of the moon (except on the rare occassion when the earth is in the way causing a lunar eclipse). If the moon is behind the earth, we see it as a full moon as we can see all of the lit side. When the moon is beside the earth, we see half the lit side and half the side in shadow, which appears to us as a half moon. When it's in front of the earth its a new moon which isn't visible as we can only see the side of the moon in shadow. In between the stages we see the crescent waxing and waning moons.
4065
A full moon is simply fully visible.  Usually, the earth is between the sun and the moon to some degree.  The curved shadow on the moon is the shadow of the earth.  A full moon is when the moon is slightly to the side of the earth and the sun is shinging on the entire surface with no shadow of the earth on it.\n\nSee the link below for a good explanation.
58251
Actually only about 2/3 of the tides are from the moon's gravity, and about 1/3 are from the sun's gravity. \n\nThe reason there are about 2 high tides per day, is that the gravity field produced by the sun and the moon is not constant. The farther away from the moon you are, the less the gravity is. So water close to the moon gets pulled away from the earth (the force on the earth is less since the earth is farther away) and it gets pulled up in a pile we call a high tide. On the other side of the earth, the earth is pulled away from the water (since the earth is closer to the moon than the water on that side of the earth), leaving a pile of water on the far side of the earth, which is the other high tide. \n\nIn between these two piles of water, there are places where the water is not getting piled up. We say those places are experiencing a low tide. \n\nIt gets much more complicated than this of course. There are tides in the ground and in the atmosphere, in lakes and in rivers etc. There are places where there is one high tide a day or 3 or more or even no high tides per day (because of the response of the local area to the tidal forcing; governed by the bottom topography, coastline shape, etc). \n\nThere are high tides that are extra high because the sun and the moon line up (spring tides) and high tides that are not so high because the sun and the moon are at right angles, not working together (neap tides). There are ultra high tides when the moon is especially close (proxigean spring tides). There are effects of the other planets like Jupiter   and Mars in the tides. And so on.
7493
I want to add more:\n1) Due to the distance to the Moon relative to the size of our planet, it doesn't really matter from which point on Earth you are looking at our natural satellite. You will see virtually the same part of the surface.\n2) The reason the Moon rotates around its axis at about the same time it rotates around the Earth is because it is tidally locked with the Earth. Tidal lock worked for billions of years to achieve the present effect, but it's still not perfect: the Moon slightly advances or gets behind in its axial rotation relative to its revolution around the Earth. So, over time, we are actually able to see around 57% of its surface, rather than just 50%.\n3) The Earth is not close enought to the Sun to be tidally locked by its gravity (even Mercury, the closest planet to the Sun, isn't). So that's why the Sun-Earth relation is different.
28687
the moon goes thru a cycle of 4 phases each month(one a week). They are first, full, third and new.\nThink of a clock(with the earth in the very middle and the sun off to the left).Then first quarter would be down at 6, full would be over at 3, third would be at 12 and new(which is between the earth and the sun) would be at 9.
223444
Not havieng a moon would not have affected the lengh of the day.  The moon doesn't play an important part in the lengh of the day anyway.
14209
Okay, first of all, the moon nor the sun are planets.  The first answer should sum it up.
601042
While you could put a big mirror on the Moon to give more sunlight to the Earth, it would not always be there. The Moon is not always in the sky at night. Sometimes you see a full Moon which is up all night and sometimes a crescent Moon that sets a couple hours after the Sun.\nAnyway, why would you want to do that? To increase global warming? To disturb astronomers who need dark skies? To ruin the natural sleeping and waking cycles of animals and people?
417033
1.  Longer shadows\n2.  The moon's gravitational pull and the sun's gravity also\n3.  The sun\n4.  counterclockwise, west, east\n5.  D\n6.  The Earth's Rotation\n7.  The earth is at a slant compared to it's solar revolution, so the earth recieves more sunlight in different areas, and the earth's solar revolution isn't a perfect circle, AND the earth wobbles\n8.  The sun's reflection causes the moon to light up, and so the sun's position determin's the shape.\n9.  the earth and the sun and the moon have to line up in a linear fashion, perfectly, not just good enough for a full moon
284186
It isn't "chance" although that is why it is the right/size to produce solar eclipses.\n\nThe moon is not perfectly symmetrical. The crust is thinner on our side, and the core (heavy part of the moon) is displaced towards our side. That acts almost like a handle for the earth's gravity. It has slowed to the point where the earth's gravity now keeps this side pointed towards the earth.\n\nHowever it is not perfect. As seen from the earth, the moon wobbles slightly --- both side to side and up and down. The motion is called libration and allows us to see more than half of the moon. We had a discussion on the yahoo lunar group recently with a link to an animated gif that showed the moon's libration.\n\nIf you are interested in the moon, try\nhttp://groups.yahoo.com/group/lunar-observing/\n\nChuck
616264
The moon has a side that always faces us! That's not always filled with light though. That's why we have phases of the moon.
75034
The sun doesn't have to move in order for the planets to have a sunset or sunrise.  Always remember that the earth constantly rotates and takes 24 hours to make a full rotation. On one side of the earth there will be light versus the other side will be darkness.
220454
Because it's to far away.  And it's still in orbit with the Earth.  When an object moves it doesn't want to stop.  Therefore the Moon stays with us.
481017
Well, this depends somewhat on where in the world you live...if I'm in the U.S and it's noon, I won't get to see a lunar eclipse in Asia where it's midnight.\n\nThat said, you should really check out the transit of Mercury.  Mercury passes directly between us and the Sun, and you can see it pass over the Sun's bright disc.  It will be visible for most of the western hemisphere this Wednesday, Nov. 8th.  This event won't happen again for another decade.\n\nYou'll need some kind of telescope with adequate solar protection (I can't stress this enough - you will go blind if you look through a telescope at the Sun without a proper solar filter).  If you don't have this, ask your local planetarium or science center...they may have some public viewing event.  Otherwise, check out the live webcast below.\n\nSome websites:\n===========\nNasa's soft science PR piece, but has local times for the transit:\nhttp://science.nasa.gov/headlines/y2006/20oct_transitofmercury.htm\n\nA more scientific NASA page on the transit:\nhttp://sunearth.gsfc.nasa.gov/eclipse/OH/transit06.html\n\nLive transit webcast from Kitt Peak:\nhttp://www.exploratorium.edu/transit/
58887
This is when the moon is in front of the sun in respect to the earth. It is also called conjunction.
55466
The Sun, Earth, and Moon are all gravitationally tied together. In other words, the interaction of their individual gravitational fields closely relates one to the other. The Earth/Moon system moves around the Sun in a particular orbit. Should the Sun somehow disappear, the movement of the Earth/Moon system would be radically altered. Even the Sun, the largest mass of the three objects, has its movement through space influenced by the gravity of the Earth and Moon. If we could view our Sun from several light years away, we'd notice that it moves through space not in a straight line, but instead a wavy line as the Earth/Moon system tugs at it.