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Sun earth moon

TermDefinition
Axis Imaginary line that passes from the north yo South Pole.
Sattelite 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 created by rock in space
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
Ellipse Oval shape of the planets’ orbit
Heliocentric A sun centered model
Geocentric An earth centered model
Rotation The spinning of earth on its axis
Revolution The movement of an object around another
Orbit Path object follows when they revolve around the sun
Solstice Earth is directly 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 towards each other
Law of universal gravitation Every object in universe attracts every other object in the universe attracts every other object
Inertia Force that keeps planets in motion
Sun Largest object in our solar system
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
Lunar eclipse Occurs during a full moon when earth is directly between the moon and sun
Umbra Darkest part of the shadow where light is completely dark
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
Created by: user-1870860
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