Chapter 15. The Moon. Phases of the Moon. The moon rotates once on its axis in the same amount of time as it revolves around the Earth (29.5 days). *So a “day” and a “year” on the moon are the same length The different shapes of the moon that you see from earth are called phases
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Chapter 15 The Moon
Phases of the Moon • The moon rotates once on its axis in the same amount of time as it revolves around the Earth (29.5 days). • *So a “day” and a “year” on the moon are the same length • The different shapes of the moon that you see from earth are called phases • The phase you see depends on how much of the sunlit side of the moon faces earth
Eclipses • When the moon’s shadow hits Earth or Earth’s shadow hits the moon, an eclipse occurs • There are two types of eclipses: solar and lunar • The Umbra is the darkest part of the moon’s shadow • The larger part of the shadow is called the penumbra
Solar Eclipse • A solar eclipse occurs when the moon passes directly between earth and the sun, blocking sunlight from the earth • This occurs when a new moon blocks your view of the sun
Lunar Eclipse • During a lunar eclipse, earth blocks sunlight from reaching the moon • These only occur during a full moon as the moon is closest to earth’s shadow at that time • The moon can appear red because the atmosphere bends some sunlight towards the moon.