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7-Sci-MoonPhasesEcli
7-Sci-MoonPhasesEclipes
Term | Definition |
---|---|
satellite | a body that orbits a larger body |
gravity | the force that attracts a body toward any other physical body having mass. |
lunar phases | changes in the moon's appearance due to reflection of sunlight back to Earth |
waxing (of the moon) | refers to moon getting closer to its largest size, the moon appears to grow each day |
waning (of the moon) | refers to the moon getting closer to its smallest size, the moon appears to shrink each day |
gibbous phase | when the moon is more than halfway lit but not fulling lit |
crescent phase | when the moon is lit but less than halfway lit |
quarter moon | when the moon is halfway lit |
new moon | when the moon is not lit |
full moon | when the moon is fully lit |
eclipse | an event during which one object in space casts a shadow onto another object |
lunar eclipse | occurs when the moon moves through Earth's shadow |
umbra | the darkest part of a shadow during an eclipse |
penumbra | the lighter part of a shadow during an eclipse |
solar eclipse | occurs when the moon passes between the sun and Earth so that they sun is partially or totally obscured |
antumbra | lighter part of a shadow that forms at a certain distance from the object casting the shadow. |