Moon Flashcards
New moon
When the earth is completely blocking the Suns light from the moon
Phases
One of the different apparent shapes of the moon as seen from Earth.
WAxing crescent
Before the first quarter when the moon is growing
First quarter
During first quarter, 1/2 of the moon is visible for the first half of the evening, and then goes down, leaving the sky very dark.
Waxing gibbous
When most of the Moon is visible we say it is a Gibbous Moon. Observers can see all but a little sliver of the moon. During this phase, the Moon remains in the sky most of the night.
Full moon
When the earth is blocking no sunlight
Waning Gibbous
Like the Waxing Gibbous Moon, during this phase, we can see all but a sliver of the Moon. The difference is that instead of seeing more of the Moon each night, we begin to see less and less of the Moon each night. This is what the word “waning” means.
Last quarter
Last Quarter
During a Last Quarter Moon we can see exactly 1/2 of the Moon’s lighted surface.
Waning crescent
Finally, during a Waning Crescent Moon, observers on Earth can only see a small sliver of the Moon, and only just before morning. Each night less of the Moon is visible for less time.
Eclipse
The partial or total blocking of one object in space by another.
Solar eclipse
The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth.
Lunar eclipse
The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon.