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Sun-earth-moon

TermDefinition
Satellite 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,with a larger mass than nearby objects.
Meteor Is a streak of light produced when a small peice 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.
Geocentric Earth-centered model
Heliocentric Sun-centered
Ellipse An oval shape
Constellation A pattern or group of stars and given represents a figure,animal,or object.
Sun Largest object in the solar system
Axis Imaginary line that passes from the North Pole, through the Earth’s center, to the South Pole.
Rotation Spinning of earth on its axis
Revolution Is the movement of one object around another
Orbit One revolution of earth around the sun takes one year
Solstice Is one day per year when the sun appears highest in the sky
Equinox Which means “ equal night”
gravity This force that attracts all objects toward each other
Law of universal gravitation States that every object in the universe attracts every other object
Inertia Is 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 the sun
Lunar eclipse Occurs during a full moon when Earth is directly between the moon and the sun.
Umbra Darkest part of a shadow where light is completely blocked
Penumbra Area of a shadow where light is particularly blocked
Tide Daily rise and fall of ocean water
Spring tide Higher high tides during full and new moon
Neap tide Lower high tides during the first and third quarter moon
Maria Dark,smooth,lava covered area on the moon
Highlands Higher lighter areas on the moon covered with craters
Created by: user-1978789
 

 



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