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Sun, Earth, Moon

TermDefinition
Satellite A body that orbits a planet.
Star A giant ball of super heated gas, or plasma, composed of hydrogen and helium.
Planet Spherical, orbits the Sun, with a larger mass of any nearby objects.
Meteor A streak of light produced when a small piece of rock or ice, known as a meteoroid, burns up and enters Earth’s atmosphere.
Comet A small trail 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 represents a figure, animal, or object.
Geocentric Earth-centered model
Heliocentric Sun-centered model
Ellipse Orbit of each planet is an oval shape.
Axis An imaginary line that passes from the North Pole to the South Pole.
Rotation The spinning of Earth on its axis.
Revolution The movement of one object around the other.
Orbit Earths path around the sun.
Solstice One day in the year that the sun is the highest in the sky.
Equinox Neither hemisphere is tilted toward the sun
Gravity A force that attracts all objects towards each other.
Law of universal gravitation States every object in the universe attracts each other.
Inertia The tendency of an object to resist a change in motion.
Phase Different shape of the moon you see
Solar eclipse Moon phase directly between earth and the moon
Lunar eclipse Full moon when earth is directly between the earth and the sun
Umbra Darkest part of shadow where light is completely blocked
Penumbras Area of 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 first and third quarter moons
Maria Dark smooth, lava covered lands on the moon
Highlands Higher lighter areas on the moon covered with craters
Weight Force of gravity on an object
Sun Largest object in our solar system
Created by: user-1979329
 

 



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