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earth sun moon space

rotation to spin or turn on an axis
Revolution to travel in a path around another object
Orbit the path an object takes as it moves around another object in space
moon phase the changes in the appearance of the moon as seen from Earth
waxing moon phases the phases of the moon where the moon appears to be growing (the light is increasing)
waning moon phases the phases of the moon where the moon appears to be shrinking; there is less and less light reflected
lunar cycle the different appearances of the Moon caused by the moon's orbit around Earth
Gravity a force that pulls objects toward each other larger objects have a larger Force
solar system a star and all the objects in orbit around it
the order of the planets in our solar system Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune
axis an imaginary line around which a planet rotates
day a period of time lasting 24 hours; the amount of time it takes Earth to make one complete rotation on its axis
night the period of darkness which occurs each day when that part of Earth is facing cold dark space
Sun the star that is at the center of our solar system
Earth the third planet from the Sun; a small, rocky planet unique because it has liquid water ---which enables it to support life
Earth's Moon a natural satellite of Earth in space that revolves around a planet reflecting the Sun's light
apparent movement seening movement of an object when no movement is actually taking place. example - the Sun moving across earth sky
crater bowl-shaped holes on a terrestrial surface typically made by asteroids
seasons one of four periods of the year. order- spring, summer, fall, winter
Summer the season when the northern hemisphere is tilted towards the Sun
winter the season when the northern hemisphere is tilted towards cold dark space
northern hemisphere the half of Earth located above the equator
southern hemisphere the half of Earth located below the equator
equator the imaginary line that separates the Northern Hemisphere from the southern hemisphere
high tide a time when the in flowing water reaches its highest level
low tide the time when ocean water reaches its lowest level
shadow the dark shape made on the ground when an object is blocking sunlight
asteroid a large rocky object that orbits the Sun
gas giant the four planets on the outside of the asteroid belt Jupiter Saturn Uranus Neptune
terrestrial planets the four planets closest to the Sun Mercury Venus Earth Mars
asteroid belt the area between Mars and Jupiter filled with asteroids
planet a large body that moves in an orbit around a star
the eight phases of the moon in order new moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, third quarter (also called last quarter), waning crescent, and new moon again
12 a.m. Midnight
12 p.m. Noon (high noon)
East Where the Sun appears to "rise"
West Where the Sun appears to set
rotate rotation, rotating, rotates
revolve revolution, revolving, revolves
duration of moon revolution about one month
duration of earth's rotation on axis 24 hours
duration of earth's revolution around the sun 365 1/4 days (one year)
23.5° The tilt of the Earth on its axis
Cycle a sequence of events that is repeated over and over
crater a depression on a rocky surface, like the moon, caused by an impact from another object
Created by: mrs. keeton
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