The Universe Key Terms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Scientific models | a scientific activity the aim of which is to make a particular part or feature of the world easier to understand, define, quantify, visualize, or simulate.
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| Geocentric | having or relating to the earth as center
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| Heliocentric | having or relating to the sun as center
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| Big Bang Theory | The Big Bang is a THEORY about the creation of the UNIVERSE
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| Milky Way | The galaxy to which Earth and other components of our Solar System belong.
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| Comet | A ball of ice and dust who orbits around the sun in a long, narrow ellipse
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| Asteroids | Objects revolving around the sun that are too small and too numerous to be considered planets.
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| Meteors | The streak of light in the sky produced by the burning of a meteoroid in Earth's atmosphere.
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| Meteorite | When a meteoroid burns in the atmosphere and hits the ground
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| Meteoroid | a chunk of rock or dust in space that comes from comets or asteroids
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| Revolution | The movement of one object around another, Earth revolution around the sun is equal to one year; 365 1/4 days
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| Rotation | The spinning of the Earth on its axis, day and night (24 hours)
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| Photosphere | The visible surface of the Sun; the upper surface of a convecting layer of gases in the outer portion of the sun whose temperature causes it to radiate light at visible wavelengths; sunspots and faculae are observed in the photosphere.
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| Corona | The outer atmosphere of the Sun made up of thin gases and can only be seen during a solar eclipse without telescopes its temperature is 1 - 2,000,000°C.
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| Chromosphere | The lower level of the solar atmosphere between the photosphere and the corona.
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| Solar Wind | streams of charged particles constantly given off by the Sun
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Created by:
darrin_evans
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