SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Always 50%
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Always 75%
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Always 100%
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It depends on the phase.
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Detailed explanation-1: -At New Moon, the percent illuminated is 0; at First and Third Quarters, it is 50%; and at Full Moon, it is 100%. During the crescent phases the percent illuminated is between 0 and 50% and during gibbous phases it is between 50% and 100%.
Detailed explanation-2: -With one exception that we’ll look at in just a moment, the Moon is always exactly 50% lit by the Sun’s rays.
Detailed explanation-3: -Moon phases Like the planets, we only see the Moon because it reflects the Sun’s light. And just as we have half the planet lit and the other in darkness at any one time, the Sun is always shining on half the Moon. This means there is no dark side of the Moon, just a side facing away from the Earth.
Detailed explanation-4: -Last Quarter: Sometimes called Third Quarter. The left half of the Moon appears lighted, and the right side of the Moon appears dark.
Detailed explanation-5: -Over the course of a lunar cycle we can see more than 50% of the Moon’s surface from Earth. This is because of a combination of effects which are known as “librations” of the Moon.