What part of the Moon's shadow across the earth's surface is called?
Your question is not quite coherent. See if you can phrase it more clearly.
Why does the moons shadow move over the surface of the earth?
The shadow is a direct result of the moon blocking the sun's rays. But, the solar eclipse can only be seen if that shadow happens to fall on your location on the earth's surface. The shadow ends up being about the same size as the moon. Now, that shadow "moves" on the earths surface by two different mechanisms: a) the moon continues to move around the earth, so the shadow moves, b) the earth rotates…
What do you call it when the moon casts a shadow on the earth?
This is called a solar eclipse as the moon is blocking out the sun from your perspective on Earth. The actual shadow has two parts which both have their own names. The area that is the full shadow where you would witness a total solar eclipse is called the umbra. There is also a larger and less dark shadow that is cast around the umbra called the penumbra. In this area only a partial eclipse…
Does a satellite in earths orbit cast a visible shadow on earths surface?
The Moon does, most noticeably during an eclipse. Smaller satellites are tougher, try this experiment: use a golf ball and hold it outside on a sunny day or a cloudy day and then move it closer or farther from the ground. The visible shadow changes based on condition and naturally the size of the satellite --------------- no, too small. The sunlight refracts off of the atmosphere and 'fills in' the shadow cast far before it…
How fast does the shadow of the moon race across the earth's surface in an eclipse?
Source 1: The Moon's speed through the shadow during a lunar eclipse is about one kilometer per second (2,300 mph) and I suppose that would be the speed of its shadow on Earth too. Source 2: As the earth continues to rotate, the umbra sweeps across the surface from west to east at a speed of about 1600 kilometers an hour. Source 3: ...the approach of the edge of the shadow of the Moon speeds…
How does the surface behind a shadow affect the shape and size of an shadow?
If the shadow is on a convex surface, it will be bigger. On a concave surface it will be smaller. If the light source is at a low angle to the opaque object causing the shadow (e.g. you're casting a shadow from a flashlight behind you, to a sidewalk in front), the shadow will be relatively tall. If the angle of the light is high (e.g. sun nearly overhead), the shadow will be short. This…
Why does an eclipse occur?
Lunar eclipse . . . occurs when the moon moves across the Earth's shadow. For a few hours, the moon is not illuminated by the sun, so it appears to turn dark in the sky. The Earth is located between the moon and the Sun. Solar eclipse . . . occurs when the Earth moves across the Moon's shadow. For a few hours, the moon's tiny shadow speeds across the Earth's surface. Anyone in the…
What happens when the earth comes directly between the sun and the moon causing earths shadow to be cast upon the moon?
That's called a "lunar eclipse". Depending on how precisely the Sun, Earth, and Moon all line up, the eclipse may be "total", in which the Moon is completely in the Earth's shadow, or "partial" in which case the Earth's shadow hits only a portion of the Moon's surface. You can see the catalog of all eclipses from 2000 BCE to 3000 AD on the NASA Eclipse Web Site at the link below.