Question 1

Considering that the sun is about 1/100 AU in diameter and a typical planet like Earth is 1/10,000 AU, discuss whether or not our Solar System is crowded or empty.

Accepted Answer

Our Solar System can be considered relat

Question 2

If the distance to the nearest star is 4.2 light-years, then

Accepted Answer

A)  the star is 4.2 million AU away. 
B)  the light we see left the star 4.2 years ago. 
C)  the star must have formed 4.2 billion years ago. 
D)  the star must be very young. 
E)  the star must be very old. 
A)  the star is 4.2 million AU away. 
B)  the light we see left the star 4.2 years ago. 
C)  the star must have formed 4.2 billion years ago. 
D)  the star must be very young. 
E)  the star must be very old.

Question 3

A kilometer contains 1 million meters.

Accepted Answer

A) True 
 B)False

Question 4

The radius of the moon's orbit is about ____ times larger than the radius of Earth.

Accepted Answer

A)  0.6 
B)  6 
C)  60 
D)  600 
E)  6000 
A)  0.6 
B)  6 
C)  60 
D)  600 
E)  6000

Question 5

Draw a schematic (not to scale) diagram showing the sun, the Earth circling around it, and the other seven planets with labels for each orbit.

Accepted Answer

I'm sorry, but I am a text-based AI and

Question 6

A(n) ____________________ is the largest known structure in the universe.

Accepted Answer

The answer of A(n) ____________________ is the largest known structure...

Question 7

If the light takes 8 minutes to reach Earth from the sun and the nearest star is 4.7 ly from the sun, what is the distance from the sun to the nearest star in astronomical units?

Accepted Answer

A)  37.6 AU 
B)  1.7 AU 
C)  214 AU 
D)  310,000 AU 
E)  1.5*1011 AU 
A)  37.6 AU 
B)  1.7 AU 
C)  214 AU 
D)  310,000 AU 
E)  1.5*1011 AU

Question 8

From what you know about astronomical units and light-years, how would you define a light-minute?

Accepted Answer

The answer of From what you know about astronomical units...

Question 9

The ____________________ contains a large amount of gas and dust and about 100 billion stars, and our sun is one of those stars.

Accepted Answer

The answer of The ____________________ contains a large amount of...

Question 10

If the Earth were represented as a basketball (~10 in. in diameter) and the moon as a baseball (~3 in. in diameter) then, to order of magnitude, what size would best represent the diameter of the sun?

Accepted Answer

A)  10 ft 
B)  100 ft 
C)  1000 ft 
D)  10000 ft 
A)  10 ft 
B)  100 ft 
C)  1000 ft 
D)  10000 ft

Question 11

The metric system is a decimal system.

Accepted Answer

A) True 
 B)False

Question 12

A solar system contains

Accepted Answer

A)  primarily planets. 
B)  large amounts of gas and dust but very few stars. 
C)  large amounts of gas, dust, and stars. 
D)  a single star and planets. 
E)  thousands of superclusters. 
A)  primarily planets. 
B)  large amounts of gas and dust but very few stars. 
C)  large amounts of gas, dust, and stars. 
D)  a single star and planets. 
E)  thousands of superclusters.

Question 13

The number 52,600,000,000 would be written in scientific notation as ____________________.

Accepted Answer

5.26*10<su

Considering that the sun is about 1/100 AU in diameter and a typical planet like Earth is 1/10,000 AU, discuss whether or not our Solar System is crowded or empty.

If the distance to the nearest star is 4.2 light-years, then

A kilometer contains 1 million meters.

The radius of the moon's orbit is about ____ times larger than the radius of Earth.

Draw a schematic (not to scale) diagram showing the sun, the Earth circling around it, and the other seven planets with labels for each orbit.

A(n) ____________________ is the largest known structure in the universe.

If the light takes 8 minutes to reach Earth from the sun and the nearest star is 4.7 ly from the sun, what is the distance from the sun to the nearest star in astronomical units?

From what you know about astronomical units and light-years, how would you define a light-minute?

The ____________________ contains a large amount of gas and dust and about 100 billion stars, and our sun is one of those stars.

If the Earth were represented as a basketball (~10 in. in diameter) and the moon as a baseball (~3 in. in diameter) then, to order of magnitude, what size would best represent the diameter of the sun?

The metric system is a decimal system.

A solar system contains

The number 52,600,000,000 would be written in scientific notation as ____________________.

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters

Exam 1: Here and Now

Considering that the sun is about 1/100 AU in diameter and a typical planet like Earth is 1/10,000 AU, discuss whether or not our Solar System is crowded or empty.

If the distance to the nearest star is 4.2 light-years, then

A kilometer contains 1 million meters.

The radius of the moon's orbit is about ____ times larger than the radius of Earth.

Draw a schematic (not to scale) diagram showing the sun, the Earth circling around it, and the other seven planets with labels for each orbit.

A(n) ____________________ is the largest known structure in the universe.

If the light takes 8 minutes to reach Earth from the sun and the nearest star is 4.7 ly from the sun, what is the distance from the sun to the nearest star in astronomical units?

From what you know about astronomical units and light-years, how would you define a light-minute?

The ____________________ contains a large amount of gas and dust and about 100 billion stars, and our sun is one of those stars.

If the Earth were represented as a basketball (~10 in. in diameter) and the moon as a baseball (~3 in. in diameter) then, to order of magnitude, what size would best represent the diameter of the sun?

The metric system is a decimal system.

A solar system contains

The number 52,600,000,000 would be written in scientific notation as ____________________.

A Users Guide to the Sky

Cycles of the Sun and Moon

The Origin of Modern Astronomy

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Formation and Structure of Stars

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies: Normal and Active

Modern Cosmology

The Origin of the Solar System

Earth and Moon: Bases for Comparative Planetology

Mercury, Venus and Mars

The Outer Solar System

Meteorites, Asteroids, and Comets

Astrobiology: Life on Other Worlds

Filters