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Sun-Earth-Moon

TermDefinition
Statelite Is a body that orbits a planet.
Star Is a giant ball of superheated gas, or plasma, composed of hydrogen and helium.
Planet Spherical, orbits the sun, larger mass than nearby objects.
Metoer Is a streak of light produced when a small piece of rock or ice.
Comet Is a cold mixture of dust and ice that develops a long trail of light as it approaches the sun.
Constellation A pattern or group of stars that people imagine
Geocentric A earth-centered model
Heliocentric A sun-centered model
Elispe An orbit of each planet, an oval shape, rather than a perfect circle.
Axis An imaginary line that passes from the North Pole, through the Earths center, to the South Pole
Rotation The spinning of Earths axis
Revolution The movement of one object around another
Orbit Earth path around the sun
Solstice In each hemisphere, there is one day per year when the sun appears highest in the sky
Equinox neither hemisphere is tilted toward the sun, night and day are both 12 hours long
Gravity The force that attracts all objects towards each other
Law of universal gravitation Every object attracts every other and its force depends on mass and distance
Interia The tendency of an object to resist a change in motion
Weight Force of gravity on an object
Phase Different shape of the moon you see
Solar eclipse When the moon passes directly between the Earth and Sun during a new moon.
Lunar eclipse Occurs during a full moon when Earth is directly between the moon and sun.
Umbra Darkest part of a shadow where light is completely blocked.
Penumbra Area of a shadow where light is partially blocked.
Tide Daily rise and fall of the ocean water
Spring Tide Higher high tides during full and new moons.
Neap Tide Lower high tides during the first and third quarter moons.
Maria Dark, smooth, lava covered areas on the moon.
Highlands Higher lighter areas on the moon covered with craters.
Created by: user-1963008
 

 



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