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Unit 5 Ch 20 L 2 and 3 vocabulary words


large, dark, flat areas on the Moon


lit part of the Moon or a planet that can be seen from Earth

waning phase

occurs when less of the Moon's near side is lit each night

waxing phase

occurs when more of the Moon's near side is lit each night

lunar eclipse

occurs when the Moon moves into Earth's shadow


lighter part of a shadow where light is partially blocked

solar eclipse

occurs when the Moon's shadow appears on Earth's surface


daily rise and fall of sea level


central, darker part of a shadow where light is totally blocked

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