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Sun, Earth, and Moon

TermDefinition
gravity the force of attraction between any two objects due to their mass
inertia the tendency of a moving object to keep moving in a straight line
orbit the path one object follows around another object
revolution one complete trip of one object around another object
rotation a complete spin on an axis
axis an invisible straight line through a spinning object
the Sun the Earth revolves around...
the Earth the Moon revolves around...
its own axis the Earth rotates around...
east for people on earth, the sun looks like it rises in the...
west for people on earth, the sun looks like it sets in the...
crescent a "C" shape
gibbous a squished ball shape that is bigger than half of a circle
waxing getting bigger (for the moon, on the right)
waning getting smaller (for the moon, on the left)
new moon when there is no visible moon at any time that day
full moon when the moon looks like a big complete circle
first QUARTER moon when the moon looks like HALF a circle on the RIGHT
last QUARTER moon or third QUARTER moon when the moon looks like HALF a circle on the LEFT
solar system a star (like our sun) and all of the bodies that revolve around it (like planets)
nighttime when your part of the earth is facing AWAY from the sun
daytime when your part of the earth is facing TOWARDS the sun
noon when your shadow is its (approximate) shortest
solar eclipse when people on earth try to see the sun but the sun is blocked by the moon
lunar eclipse when people on earth try to see the moon but the moon is in the shadow of the earth
24 hours how long it takes the earth to rotate once
365 and 1/4 days how long it takes the earth to revolve once
27 (ish) days how long it takes the moon to revolve once
Created by: SCMSLevi
Popular Earth Science sets

 

 



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