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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 Spherical, orbits the sun, with a larger mass than nearby objects.
Meteor A streak of light produced when a small piece of rock or ice known as a meteoroid, burns up as it enters Earth’s atmosphere.
Comet 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 represents a figure, animal, or object.
geocentric An earth centered model of the solar system.
Heliocentric A sun centered model of the solar system.
Ellipse Oval shape of the planets’ orbits.
Sun Largest object in our solar system.
Axis An imaginary line that passes from the North Pole, through the Earth’s, to the South Pole.
Rotation The spinning of earth in its axis.
Revolution The movement of one object around another.
Orbit The path a planet flows around the sun.
Solstice Earth is most tilted toward or away from the sun which causes the longest or shortest daylight of the year.
Equinox Earth is not tilted toward the Sun which causes equal day and night.
Gravity The force that attracts all objects toward each other.
Law of universal gravitation Every object attracts every other and its force depends on mass and distance.
Inertia 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 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-1979330
 

 



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