The illuminated part
Nothing happens to the other side of the Moon in half moon days. The reason we do not see the whole Moon is because only half of it is reflecting the light from the Sun.
The moon is currently in its first quarter phase. At this point in its orbit, the sun's light is illuminating half of the moon that is facing Earth, while the other half remains in shadow. This creates the appearance of a half bright, half dark moon when viewed from Earth.
90 degrees (approximately) from the position of the moon, in the direction of the lighted side.
This is the first quarter phase. The moon looks half lit, half in shadow, but you actually can only see one quarter of the moons surface at this point (during a full moon, you would only be able to see half of the moons surface - the half that faces us).
The waxing moon phase is when the moon is transitioning from new moon to full moon, and the illuminated portion of the moon is growing larger each night. During this phase, we can see more than half of the moon's lighted side from Earth.
When you see a half moon, the position of the Sun is either directly to the right or left of the Moon as viewed from Earth. This is because a half moon occurs when the Sun, Earth, and Moon form a 90-degree angle, with the Sun illuminating half of the side facing Earth.
During the new moon you can't see no bright side because the sun is facing away from the moon.
the bright side
the sun's rays
Nothing happens to the other side of the Moon in half moon days. The reason we do not see the whole Moon is because only half of it is reflecting the light from the Sun.
in the lake, when the moon is half-dark and half-bright
68 percent
half moon
You can often see the entire "near side" of the Moon, because even though the sunlit half is very bright, the other part is dimly lit by reflected Earthlight. However, the official answer to your question is probably "one quarter". You can only see one-half of the Moon, and only half of that is lit up by the Sun.
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.
The light we see from the Sun is from the Sun itself; the entire surface of the Sun is bright. Only half of the Moon is bright, because it is illuminated by the Sun. The sun generates light, the moon can only reflect it, not generate any.
The moon is currently in its first quarter phase. At this point in its orbit, the sun's light is illuminating half of the moon that is facing Earth, while the other half remains in shadow. This creates the appearance of a half bright, half dark moon when viewed from Earth.