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37 Cards in this Set
- Front
- Back
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Asteroid
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Objects revolving around the sun that are too small and too numerous to be considered planets.
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Asteroid belt
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The region of the solar system between the orbits of Mars and Jupiter, where many asteroids are found.
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Comet
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A ball of ice and dust whose orbit is a long, narrow ellipse.
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Ellipse
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An elongated circle, or oval shape; the shape of the planets orbit.
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Force
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A push or pull exerted on a object.
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Gas Giants
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The name given to the first four outer planets: Jupiter, Saturn, Uranus, Neptune.
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Geocintric System
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A description of the solar system in which all the planets revolve around Earth.
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Gravity
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The force that pulls objects toward each other.
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Greenhouse Effect
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The process by which heat is trapped in the atmosphere by water vapor, carbon dioxcide, methane and other gases that form a "blanket" around the Earth.
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Heliocentric System
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A description of the solar system in which all the planets revolve around the sun.
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Inertia
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The tendany of a moving object to continue in a straight line or a stationary object to remain in place.
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Meteor
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a streak of lightin the sky produced by the burning of a meteroid in Earths atmosphere.
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Meteorite
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A meteroid that has hit Earths surface.
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Meteroid
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A chunck of rock or dust in space.
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Nuclear Vusion
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The combinig of two atomic nuclei to produce a single larger nucleous as when two hydrogen atoms join together to form helium, releasing energy.
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Retrograde Rotation
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The spinning motion of a planet from east to west, opposite to the direction of rotation of most planets.
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Revolution
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The movement of an object around another object,
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Rotation
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The spinning motion of a planet about its axes.
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Satellite
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Any object that revolves around another object in space.
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Solar System
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A large planetary system that consists of many smaller planetary systems and objects.
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Terestrial Planets
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The name givven to the four inner planets: Mercury, Venus, Earth, Mars.
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Galilean Moons
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The four moons galileo discovered around Jupiter to prove his point that not everything revolves around Earth.
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Inner Planets
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The four inner planets, Mercury, Venus, Earth, Mars, are small and have rocky surfaces.
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Outer Planets
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The four outer planets, Jupiter, Saturn, Uranus, Neptune, are very large and do not have solid surfaces.
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Galilean Moons
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The four moons galileo discovered around Jupiter to prove his point that not everything revolves around Earth.
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Inner Planets
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The four inner planets, Mercury, Venus, Earth, Mars, are small and have rocky surfaces.
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Outer Planets
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The four outer planets, Jupiter, Saturn, Uranus, Neptune, are very large and do not have solid surfaces.
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