The general term for the visible lit part of the moon is "the phase of the moon."
The visible lit portion can have a crescent shape, a gibbous shape or a "half-moon" (half circle) shape.
The moon seems to change shape as it moves around the earth because the moon is always half lit by the sun. The amount of the lit half we see changes because the moon revolves around the earth.
50% of the moon is always lit
The Moon does not really change its shape. It just seems to change its shape, or go through phases, because we only see the parts of it that are lit up by the Sun. The portion of the Moon that we see depends on where the Moon is in its orbit around Earth. When the Moon is between the Earth and the Sun, the side facing us is dark. We call this a new moon. Gradually, as the Moon orbits Earth, more and more of the side facing us is lit up by sunlight. When the Moon reaches the opposite side of the Earth as the Sun is, the side of the Moon facing us is completely lit up by sunlight and we see a full moon. Then we see less and less of the Moon until it becomes a new moon again. The time that it takes for the Moon to change from one new moon to the next new moon is about 29.5 days.
Half the Moon is always lit, unless the Moon is eclipsed by the Earth.
The Moon isn't really changing its shape. It is always round. As the Moon moves around Earth, we only see the parts of the Moon that are lit by the Sun. The Sun's light bounces, or reflects, off the Moon.
The moon seems to change shape as it moves around the earth because the moon is always half lit by the sun. The amount of the lit half we see changes because the moon revolves around the earth.
It doesn't The area that is lit changes - depending on where the sun is.
50% of the moon is always lit
The moon of course isn't really changing shape. It's all about the sun. The lit part of the moon you see is the part of the moon in daylight. The shadowed part is experiencing the moon's night time. These normal phases of the moon have nothing to do with earth casting a shadow on the moon.
In a gibbous moon phase, most of the moon that we see is lit.
Before the new moon, less of the moon is lit up when viewed from Earth.After the mew moon, more of the moon is lit up when viewed from Earth.
The Moon does not really change its shape. It just seems to change its shape, or go through phases, because we only see the parts of it that are lit up by the Sun. The portion of the Moon that we see depends on where the Moon is in its orbit around Earth. When the Moon is between the Earth and the Sun, the side facing us is dark. We call this a new moon. Gradually, as the Moon orbits Earth, more and more of the side facing us is lit up by sunlight. When the Moon reaches the opposite side of the Earth as the Sun is, the side of the Moon facing us is completely lit up by sunlight and we see a full moon. Then we see less and less of the Moon until it becomes a new moon again. The time that it takes for the Moon to change from one new moon to the next new moon is about 29.5 days.
Half the Moon is always lit, unless the Moon is eclipsed by the Earth.
The Moon isn't really changing its shape. It is always round. As the Moon moves around Earth, we only see the parts of the Moon that are lit by the Sun. The Sun's light bounces, or reflects, off the Moon.
the moon
Unless there is a lunar eclipse, half of the moon is always lit by the sun. Sometimes we see the lit half dead on (full moon), sometimes side on (half moon) and sometimes we don't see any of the lit surface (new moon) - usually we see something in between.
Phase 1 - New Moon - The side of the moon that is facing the Earth is not lit up by the sun. At this time the moon is not visible.Phase 2 - Waxing Crescent - A small part (less than 1/2) of the moon is lit up at this point. The part that is lit up is slowly getting bigger.Phase 3 - First Quarter - One half of the moon is lit up by the sun at this point. The part that is lit up is slowly getting bigger.Phase 4 - Waxing Gibbous - At this time half of the moon is lit up. The part that is lit is slowly getting bigger. Waxing means to slowly get bigger.Phase 5 - Full Moon - The side of the moon that is lit up by the sun is facing the Earth. The entire moon is lit up at this point.Phase 6 - Waning Gibbous - The moon is not quite lit up all the way by sunlight. The part of the moon this is lit is slowly getting smaller. Waning means to slowly get smaller.Phase 7 - Last Quarter - Half of the moon is lit up but the sun. The part that we can see lit up is slowly getting smaller.Phase 8 - Waning Crescent - A small part of the moon is lit up at this point. It is getting smaller by the minute.