The moon is not half the size of the earth. the earth has a mass of 3.98 X 1024 kg, and the moon only has a mass of 7.34 X 1022 kg, which is only about 0.012300 Earth masses.
Half-moon Half-Earth
because the part of the earth that is having 'daytime' is blocking the sun from the moon. since the moon revolves around it can get a little bit of sun. What you see of the moon is how much sun light is hitting the moon.
The moon is 1/4 the diameter of the Earth
Mercury is larger than the moon and so is closer in size to Earth than the moon is. It should be noted that Mercury is closer in size to the moon than it is to Earth.
No, the moon does not have any water due to the fact that its core is only one-fifth the size of its radius. In contrast, Earth's core is about half the size of the planet's radius. Furthermore, the moon's core is not molten, nor does the moon spin on its axis, it's tidally locked to Earth.
Size: The Moon has about 1/4 of the diameter of Earth. Mass: The Moon has about 1/81 of the mass of Earth.
The shadow of the earth never falls on the moon when the moon is half full.
Back when the earth was young and relatively molten, a large object about half the size of the current moon, struck the earth and took a large section of the earth with it. The object combined with the pieces of earth that were broken off and began orbiting the earth. Hence, the moon.
In rough rounded figures . . . -- The moon's diameter is 27.3% the size of the Earth's diameter. -- That makes the moon's surface area 7.5% the size of Earth's surface area. -- And it makes the moon's volume 2% the size of the Earth's volume. -- The moon's mass is 1.23% the size of the Earth's mass. (When we notice that the moon has 2% of Earth's volume but only 1.23% its mass, we realize immediately that the moon's average density is only 60% of the Earth's average density.)
Moon = 1/4 of Earth
The moon is about 1/4th the size of the Earth.
Like the Earth, the Moon is a sphere which is always half illuminated by the Sun, but as the Moon orbits the Earth we get to see more or less of the illuminated half.