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Sun-Earth-Moon

TermDefinition
Satellite A body that orbits a planet
Star A giant ball of superheated gas, or plasma, composed of hydrogen and helium
Planet An object that orbits the sun
Meteor A streak of light produced when a small piece of rock or ice known as a meteoroid, burns up as it enters Earths atmosphere
Comet A cold mixture of dust and ice that develops a long trail of light
Constellation A pattern or group of starts that people imagine represents a figure, animal, or object
Geocentric Earth-centered model
Heliocentric Sun-centered
Ellipse An oval shape
Sun Largest object in our solar system
Axis An imaginary line that passes from the North Pole, through the Earths center, to the South Pole
Rotation The spinning of Earth on its axis
Revolution The movement of one object around another
Orbit Earths path
Solstice One day per year when the sun appears highest in the sky
Equinox Halfway between the solstice, neither hemisphere is tilted toward the sun
Gravity A force that attracts all objects toward each other
Law of universal gravitation A law that states every object in the universe attracts every other object
Inertia The tendency of an object to resist a change in motion
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 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-1979089
 

 



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