The Solar System Answers
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What do comets and asteroids have in common?
A
They are made of ice.B
They orbit the Sun.C
They are made of metal debris.D
They are at the center of the solar system.3
Which idea did Ptolemy’s model use to explain why the planets appeared to move backward as they moved in their orbits?
A
The planets spun in epicycles.B
The planets rotated on their axes.C
The planets revolved around the Sun.D
The planets were made of different materials.4
Which two gaseous giants did Renaissance scientists such as Galileo know about?
A
Jupiter and SaturnB
Mars and NeptuneC
Neptune and UranusD
Uranus and Saturn5
Which idea was supported by Aristarchus, Copernicus, and Galileo?
A
The planets have epicycles.B
The planets revolve around the Sun.C
The stars rotate around the Sun.D
The center of the solar system is Earth.6
Which describes one way that Aristarchus's explanation of the movement of objects in the sky was different from other scientists' earlier explanations?
A
He discovered Venus’s phases.B
He argued that Earth rotates on its axis.C
He explained the concept of retrograde motion.D
He described the epicycles of the planets in the sky.7
In addition to proposing that planetary orbits are elliptical, what other modification did Kepler make to Copernicus’s model?
A
Planets closer to the Sun move faster.B
Planets spin in an epicycle while orbiting Earth.C
Venus has phases due to its orbiting of the Sun.D
Earth’s rotation causes the rising and setting of the Sun.8
How did Kepler describe the planets’ orbits?
A
The planets’ orbits are circular.B
The planets’ orbits are elliptical.C
The planets and the Sun orbit Earth.D
The planets have miniature orbits called epicycles.Did you find these answers helpful?
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