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TERM
Umbra
DEFINITION
The dark center portion of a shadow- total eclipse

TERM
Penumbra
DEFINITION
The partially shaded outer region of the shadow- partial eclipse

TERM
Lunar Eclipse
DEFINITION
The moon appears to darkened as it passes into the Earth's shadow. Earth's shadow blocks the sun's light, which otherwise reflects off the moon. The next Lunar Eclipse that we will be able to see is on July 5, 2020!

TERM
Solar Eclipse
DEFINITION
When the moon gets between Earth and the sun, and the moon casts a shadow over Earth. This can only occur when the moon is in the New Moon phase, but does NOT happen every New Moon. You do NOT want to look directly at a solar eclipse! They make special glasses to view one. The next solar eclipse for North America will be in 2024.

Blood Moon
the phenomenon whereby the moon in total eclipse appears reddish in color as it is illuminated by sunlight filtered and refracted by the earth's atmosphere.
Tides
the regular rise and fall of the ocean's surface influenced by the moon's gravity pulling on earth (happens 4 times a day- 2 low and 2 high)

eclipse
The partial or total blocking of one object in space by another (to block light)
