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7th Space

TermDefinition
solar system a group of planets and other bodies that revolve around a star
moon natural satellite around a planet; Earth has 1 and Jupiter more than 75
Oort cloud spherical shell around our solar system
Sun a star; center of our solar system
meteor a small body of matter from outer space that enters the earth's atmosphere
asteroid minor planet—an object that is neither a true planet nor a comet—orbits within the inner solar system
comet object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
Kuiper belt a region of the solar system beyond the orbit of Neptune, believed to contain many comets, asteroids, and other small bodies made largely of ice
gravity an attractive force that occurs between two masses
habitable zone the area around a star where it is not too hot and not too cold for liquid water to exist on the surface of a planet
hydrosphere all the solid, liquid, and gas forms of water
atmosphere all the air on the planet
troposphere all the air for photosynthesis and animals and also contains about 99 percent of all water vapor and aerosols
stratosphere ozone layer, which protects us from the Sun’s harmful ultraviolet radiation
mesosphere most meteors burn up in this atmospheric layer
thermosphere ISS(International Space Station) travels in this layer
Created by: NEISDSci
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