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Eclipses
Phases of the Moon
100
Reason eclipses don't happen at every new and full moon.
What is moon's orbit is tilted by 5 degrees? So the moon, earth and sun don't line up perfectly every month, only about 2 times a year.
100
An object rotates once during a single orbit.
What is synchronous rotation? This is why we only see one face of the moon.
200
Phase of the moon when it is possible for the moon to block out the sun.
What is New moon? This describes a solar eclipse. This happens during the day.
200
Amount of moon's surface that is always lit.
What is half?
300
Reason the moon looks red/orange during a lunar eclipse.
What is light from sun bent by earth's atmosphere onto the moon?
300
When the moon is at a right angle to the earth and sun.
What is quarter phase? True for both first and third quarter.
400
Type of eclipse where the sun looks like a bright ring.
What is annular solar eclipse? It looks like it has a bite taken out during a partial solar eclipse.
400
The time it takes to go from third quarter to new moon.
What is about one week? The moon will be in the waning crescent phase. There is one week between each of these phases: New, 1st quarter, full, 3rd quarter, new. 4 weeks, about 1 month for the whole cycle.
500
Type of eclipse that is visible for the longest time to the most people.
What is a lunar eclipse? Lasts over an hour an seen by almost half of earth. A solar eclipse lasts about 2 min and is only seen in a thin band.
500
Side of moon that is lit up when the phase is between 1st quarter and full.
What is right side? Waxing gibbous. Waxing means getting bigger. Waning is smaller (left side).