Observing the Solar System
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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| What is a geocentric model? | a model that shows Earth at the center of the revolving planets and stars
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| What is a heliocentric system? | a model that shows Earth and the other planets revolving around the sun
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| What did the Romans name the points of light that the Greeks called planets? | Mercury, Venus, Mars, Jupiter, and Saturn
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| In a geocentric system, what is at the center of the universe? | Earth
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| How was Ptolemy’s model different from the earlier Greek model? | he thought the planets moved on little circles that moved on bigger circles
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| A description of the solar system in which all the planets revolve around the sun is called a ________________________. | heliocentric system
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| In the 1500s, who further developed the heliocentric explanation for the motion of the planets? | Copernicus
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| What were two observations that Galileo made through his telescope that supported the heliocentric model? | there were four moons revolving around Jupiter,
and that Venus goes through phases similar to the moon’s phases
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| What is an ellipse? | an oval shape, which may be elongated or nearly circular
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| In what time period did Copernicus contribute to our knowledge of the solar system? | Mid-1500's
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| In what time period did Brahe contribute to our knowledge of the solar system? | Late 1500's
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| In what time period did Galileo contribute to our knowledge of the solar system? | Early 1600's
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| In what time period did Kepler contribute to our knowledge of the solar system? | Early 1600's
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| What was Copernicus' accomplishment? | further developed heliocentric model; worked out arrangement of known planets
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| What was Brahe's' accomplishment? | observed the positions of the planets for more than 20 years
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| What was Galileo's accomplishment? | used a telescope to make discoveries that supported the heliocentric model
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| What was Kepler's accomplishment? | discovered that the orbit of each planet is an ellipse
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| What does the solar system consist of? | the sun, nine planets and their moons, and smaller objects, like comets and asteroids
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Created by:
lprinke
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