You see a full moon when the Moon is on the opposite side of the Earth from the Sun, i.e. the Moon is behind the Earth as seen from the Sun, so practically the entire visible face is illuminated. This is also when the Earth's shadow can cross the Moon, creating a "lunar eclipse."
On the opposite side of the Earth from the Sun.
The Moon is on the opposite side of the Earth than the Sun is when there is a full Moon.
The far side of the moon is always opposite of the visible side. When the moon is new, it is between the Sun and the earth. Since we see the dark side of the moon, the opposite side must be fully lit by the sun. Likewise when we see a gibbous moon, the far side would be a crescent. When we see a full moon, the far side is in complete darkness.
To be full moon, the Moon has to be opposite the Sun - that way, we see the whole of the illuminated side. The only way for the moon to be on the opposite side of earth is for it to be on the night side. Thus the full moon cannot be out during the day.
This happens when the moon is on the opposite side of the earth from the sun. The moon reflects the light of the sun, and because it is directly opposite, we can see half of it from the earth. This is the half that appears as the full moon.
The Moon orbits the Earth, while the Earth is orbiting the Sun. Because the Moon is moving, we see it in different positions relative to the Sun; we call this the "phases of the Moon". Only when the Moon is on the opposite side of the Earth from the Sun will we see a "full" moon.
Full moon. Earth spins much faster than the moon moves so we all see a full moon as Earth turns us to see it.
The moon 'shines' by the light it reflects from the sun. When the moon is on the opposite side of the earth to the sun, sunlight is reflected from the full hemisphere of the moon we can see. this is a full moon.When the moon is on the same side of the sun the sunlight falls on the side we cannot see so no light is reflected to earth and we cannot see the moon even if it is above the horizon. This is a new moon.
The moon is ALWAYS 50% (+/-) illuminated. Though we only see all of the half lit side when the moon is opposite the sun (Full Moon).
After the full moon, we see less and less of the sunlit side.
We see the full moon in the sky because it reflects light to Earth. It does not make it's own light so what we see in sunlight reflection off of the moon's surface.
When the sun and the moon are on opposite sides of our planet.