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Earth-Moon-Sun System — Quiz Answers

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To solve a problem using the equation for Kepler’s third law, Enrico must convert the average distance of Mars from the Sun from meters into astronomical units. How should he make the conversion?

A
divide the average distance by 1 point 5 times 10 to the 11th power
B
multiply 1 point 5 times 10 to the 11th power by the average distance
C
divide 1 point 5 times 10 to the 11th power by the average distance
D
multiply the average distance by 1 point 5 times 10 to the 11th power
3

The mass of the Sun is 2 times 10 to the 30th power kilograms , and the distance between Neptune and the Sun is 30 AU. What is the orbital period of Neptune in Earth years?

A
164 Earth years
B
30 Earth years
C
3 point 8 times 10 to the 11th power Earth years
D
2 point 3 times 10 to the 17th power Earth years
5

Which quantities decrease as the distance between a planet and the Sun increases? Choose three correct answers.

A
area swept out in a day
B
distance traveled in a day
C
tangential speed
D
gravitational force
E
mass
6

Based on Kepler’s work, which best describes the orbit of a planet around the Sun?

A
a circle with the Sun at the very center
B
a circle with the Sun at one edge
C
an ellipse with the Sun at the very center
D
an ellipse with the Sun at one focus
7

What is an astronomical unit (AU)?

A
the average distance between Earth and the Sun
B
the radius of the Sun
C
the diameter of the Sun
D
the average distance between Earth and its moon
8

The table shows information about two of the major moons of Uranus. Moon Orbital Period (days) Average Distance from Uranus (km) Miranda 0 point 3 1 9 129 comma 390 Titania 8 point 7 1 435 comma 910 What is the average distance between Miranda and Uranus?

A
1 point 4 7 times 10 to the 6th power kilometers
B
2 point 8 4 times 10 to the 4th power kilometers
C
4 point 6 5 times 10 to the 7th power kilometers
D
1 point 2 9 times 10 to the 5th power kilometers
9

Which proportionality does Kepler’s third law describe?

A
cap t cubed proportional to d squared
B
cap t proportional to d
C
cap t squared proportional to d cubed
D
cap t squared proportional to d
10

Which best describes how Johannes Kepler developed his laws of planetary motion?

A
He examined the motions of planets through a telescope.
B
He calculated the gravitational force on orbiting bodies.
C
He debated with Copernicus who proposed the heliocentric model.
D
He analyzed data collected by Tycho Brahe.

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Earth-Moon-Sun System — Quiz Answers — Physics