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Sun,earth,moon

TermDefinition
Satellite A satellite is a body that orbits a planet
Star A star is a giant ball of superheated gas, or plasma, composed of hydrogen and helium.
Planet A planet is an object that orbits the sun, is large enough to have become rounded by its own gravity, and has cleared the area of its orbit of any debris.
Meteor Is a streak of light produced when a small piece of rock or ice known as a meteoroid .
Comet Is a cold mixture of dust and ice that develops a long trail of light as it approaches the sun.
Constellation A pattern of stars that people imagine represents a figure, animal, or object is a constellation.
Geocentric An earth centered model is known as a geometric model.
Sun Largest object in our solar system.
Heliocentric A sun centered or heliocentric model .
Ellipse Orbit of each planet is actually an ellipse, an oval shape, rather than a perfect circle.
Inertia Force that keeps a planets 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 sun and earth during a new moon.
Lunar eclipse Occurs during a full moon when earth is directly between the. On and the 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 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-1979181
 

 



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