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2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Greeks AstronomersVocabulary Sun’s Layers
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The ancient Greeks knew of all of the following planets EXCEPT: A.Earth B.Saturn C.Uranus D.Venus
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C. Uranus
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Most ancient astronomers thought that all celestial objects revolved around_______.
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earth
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An earth centered model of the universe is called a _____________ model.
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geocentric
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Who developed this model?
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Ptolemy
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What name did the ancient Greeks give to the “wandering stars” or “wanderers”
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Planets
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Who discovered that the planet’s orbit is an ellipse?
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Kepler
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Who explained that the sun is at the center of the universe, but lacked evidence?
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Copernicus
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He made observations to support the heliocentric system
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Galileo
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He made careful observations of the planets’ orbits
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Brahe
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He was one of the first to use a telescope to observe the solar system from earth.
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Galileo
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How does the sun produce energy?
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Nuclear Fusion
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The layer of the sun’s atmosphere that we see
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Photosphere
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A stream of electrically charged particles coming from the corona
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Solar wind
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The two layers of the sun’s atmosphere that we see during a solar eclipse
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Chromosphere and corona
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The middle layer of the sun’s atmosphere
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chromosphere
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This layer of the sun’s atmosphere looks like a halo
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corona
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Eruptions on the sun
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Solar flares
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This includes the sun, planets, moon and several smaller objects.
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Solar system
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These are areas of gas on the sun that are cooler then the surrounding areas.
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Sunspots
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The red layer around the sun at that beginning and end of a solar eclipse
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Chromosphere
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Name and describe A
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A is the corona. It is a white halo that can only be seen at the middle of a total solar eclipse.
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Name and describe D
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D are sunspots. They are areas of gas on the sun that are cooler than the surrounding gasses.
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Name and describe E
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E is a prominence. It is a reddish loop of gas that connects sunspot regions.
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Name and describe C
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C is the photosphere. It is the light layer that we see from Earth.
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Name and describe F
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F is the core. It is the center of the sun where nuclear fusion occurs.
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