Lesson 9.3 The Solar System Answers

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Which statements describe the planets? Check all that apply.Mars and Venus are mostly rock.The ancient Greeks discovered all the planets in the solar system.Saturn is classified as a gas giant.Jupiter is mostly rock surrounded by clouds.Pluto is considered a dwarf planet.Earth is much smaller than Uranus.

A
Mars and Venus are mostly rock.
B
The ancient Greeks discovered all the planets in the solar system.
C
Saturn is classified as a gas giant.
D
Jupiter is mostly rock surrounded by clouds.
E
Pluto is considered a dwarf planet.
F
Earth is much smaller than Uranus.
4

Study this brochure from NASA, which explains in more detail the instruments carried by the Juno spacecraft.Which scientific activities will Juno conduct on its trip to Jupiter? Check all that apply.measuring the amount of water in Jupiter’s atmospherelanding on the planet surface to collect rock samplestaking images of the planet using infrared camerastaking chemical “fingerprints” of Jupiter’s gasesmapping Jupiter’s gravitational and magnetic fieldtransporting astronauts to the planet

A
measuring the amount of water in Jupiter’s atmosphere
B
landing on the planet surface to collect rock samples
C
taking images of the planet using infrared cameras
D
taking chemical “fingerprints” of Jupiter’s gases
E
mapping Jupiter’s gravitational and magnetic field
F
transporting astronauts to the planet
5

The loops in Ptolemy’s model, and those shown on the video, are called motion.

Answers:
The loops in Ptolemy’s model, and those shown on the video, are called motion.:geocentric
The loops in Ptolemy’s model, and those shown on the video, are called motion.:retrograde
This phenomenon is caused by Earth’s orbit than those of other planets.:faster
6

Which statements did both Aristotle and Ptolemy assume? Select two options.The Sun was the center of the solar system.Bodies in space traveled in circles.Epicycles explained the “looping” movement of the planets.The planets revolved around the Earth.The stars in the sky are other suns.

A
The Sun was the center of the solar system.
B
Bodies in space traveled in circles.
C
Epicycles explained the “looping” movement of the planets.
D
The planets revolved around the Earth.
E
The stars in the sky are other suns.
7

Which represents the Copernican model that is most similar to that of Aristarchus?

A
[Image: The solar system shows the planets in their orbits...]
Option A
B
[Image: The solar system shows the planets in their orbits...]
Option B
C
[Image: The solar system shows the sun and planets in thei...]
Option C

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