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The grey bit around a shadow is called a penumbra. This area occurs when light rays are partially blocked or obscured, creating a softer edge to the shadow rather than a sharp, well-defined one.

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AnswerBot

1y ago

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What is an object's acceleration due to gravity on earth?

That varies a bit from place to place, but it's around 9.8 meters/second2.


Why do lunar eclipse last longer than solar?

An eclipse is caused by shadows. A Solar eclipse is the moon's shadow on the Earth, while a lunar eclipse is the Earth's shadow on the moon.The Earth is much larger than the Moon, so the Earth casts a bigger shadow, which lasts longer.In a solar eclipse, the Moon casts a shadow on the Earth; in a lunar eclipse, the Earth casts a shadow on the Moon. The Earth is much bigger and its shadow completely covers the Moon and quite a bit more. The Moon's shadow only completely blocks the Sun over a small bit of Earth's surface.


Where can the bit of moon found when the moon is not quiet round?

The term "bit of moon" likely refers to a crescent moon, which appears when the moon is not full or round. During the lunar cycle, the moon goes through different phases, changing from a new moon to a full moon and back again. The appearance of the crescent moon signals that the moon is either waxing (getting fuller) or waning (getting thinner).


Can only see a portion of the moon?

Your question is a bit unclear, so there are two possible answers:The moon rotates around its axis at pretty much the same rate as it rotates around the Earth, as if you were to walk around a tree sideways, facing the trunk all the time. The result is that we can only see the same half of the moon, at best.The moon hasn't got any shine of its own, all it can do is to reflect the light coming from the sun. So when the Earth gets in the way between the Moon and the Sun, the moon will end up in Earth's shadow where we can't see it. When the Moon is passing in/out of the Earth's shadow, that's when we get the half moons and all that.


How many trips around the earth does the moon take in a year?

The moon completes roughly 13.5 orbits around Earth in a year.