UNIVERSE
SOLAR STRUCTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Penumbra
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Umbra
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Either A or B
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None of the above
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Detailed explanation-1: -The penumbra is the lighter outer part of a shadow. The Moon’s penumbra causes partial solar eclipses, and the Earth’s penumbra is involved in penumbral lunar eclipses. The penumbra is a lighter type of shadow.
Detailed explanation-2: -The dark part of the shadow is the umbra, and the part of a shadow that’s a little lighter is the penumbra. They can be experienced on Earth, but more readily in space, such as during a solar eclipse, when the Moon moves in front of the Sun and leaves a shadow on Earth.
Detailed explanation-3: -A dark shadow is formed at the centre where no light is reached and is called an umbra. The light shadow formed around the umbra is called a penumbra where a part of the light from the source is reached.
Detailed explanation-4: -The alignment of the sun and the moon casts a full, dark shadow on the earth, called an umbra, and also a lighter, partially blocked shadow, called a penumbra.