Question 1

Which arrangement is correct in increasing order of mass left to right?

Accepted Answer

A)  planet,star,galaxy 
B)  star,planet,galaxy 
C)  galaxy,star,planet 
D)  planet,galaxy,star 
E)  star,galaxy,planet 
A)  planet,star,galaxy 
B)  star,planet,galaxy 
C)  galaxy,star,planet 
D)  planet,galaxy,star 
E)  star,galaxy,planet A

Question 2

Suppose we wish to travel to the nearest star using a super space ship capable of traveling at 1*1010 km/yr.We have nothing even close to this space ship yet.How long will it take us to get to the nearest star which is about 4*1013 km away from us?

Accepted Answer

A)  4 years 
B)  400 years 
C)  4000 years 
D)  4 billion years 
A)  4 years 
B)  400 years 
C)  4000 years 
D)  4 billion years C

Question 3

A supercluster refers to a large group of stars within the Milky Way.

Accepted Answer

A) True 
 B)False  False

Question 4

The metric system is a decimal system.

Accepted Answer

A) True 
 B)False

Question 5

Scientific notation is used in science because

Accepted Answer

A)  it makes it easy to write large or small numbers. 
B)  all astronomical distances are expressed in metric units. 
C)  it makes conversions between units easy. 
D)  all of the above. 
E)  none of the above. 
A)  it makes it easy to write large or small numbers. 
B)  all astronomical distances are expressed in metric units. 
C)  it makes conversions between units easy. 
D)  all of the above. 
E)  none of the above.

Question 6

If we say that an object is 1,000 light-years away we see it

Accepted Answer

A)  as it looked 1,000 years ago. 
B)  as it would appear to our ancestors 1,000 years ago. 
C)  as it looked 1,000 light-years ago. 
D)  as it is right now,but it appears 1,000 times dimmer. 
A)  as it looked 1,000 years ago. 
B)  as it would appear to our ancestors 1,000 years ago. 
C)  as it looked 1,000 light-years ago. 
D)  as it is right now,but it appears 1,000 times dimmer.

Question 7

The average distance from Earth to the sun is

Accepted Answer

A)  1 ly 
B)  1 million km 
C)  1 million miles 
D)  1 billion km 
E)  1 AU 
A)  1 ly 
B)  1 million km 
C)  1 million miles 
D)  1 billion km 
E)  1 AU

Question 8

If the nearest star is 4.2 light-years away,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 9

A kilometer is a longer measure of distance than a mile.

Accepted Answer

A) True 
 B)False

Question 10

A light-year is the distance light travels in one year.

Accepted Answer

A) True 
 B)False

Question 11

If the Milky Way Galaxy contains 100 billion stars and only one star in 100 has an Earth-like planet,how many stars in the Milky Way Galaxy have Earth-like planets?

Accepted Answer

A)  1 
B)  1000 
C)  1,000,000 
D)  1,000,000,000 = one billion 
E)  100 billion 
A)  1 
B)  1000 
C)  1,000,000 
D)  1,000,000,000 = one billion 
E)  100 billion

Question 12

In science fiction movies,it is common to use a space craft to travel across the Milky Way Galaxy or to assert that we have been visited by alien space craft from the other side of the Milky Way Galaxy.If one has a space craft that can travel at the speed of light,to an observer on the earth,how long will it take to go from one edge of the Milky Way Galaxy to the other and return?

Accepted Answer

A)  4.6 years 
B)  9.2 years 
C)  1000 years 
D)  15,000 years 
E)  150,000 years 
A)  4.6 years 
B)  9.2 years 
C)  1000 years 
D)  15,000 years 
E)  150,000 years

Question 13

Most of us humans live inside which one of the following?

Accepted Answer

A)  star 
B)  planet 
C)  galaxy 
A)  star 
B)  planet 
C)  galaxy

Question 14

Mars is farther from the Sun than the Earth.

Accepted Answer

A) True 
 B)False

Question 15

A(n)____________________ is a collection of billions of stars.

Accepted Answer

The answer of A(n)____________________ is a collection of billions of...

Question 16

The Milky Way Galaxy

Accepted Answer

A)  contains about 100 stars. 
B)  is the largest known object in the universe. 
C)  is about 75,000 light-years in diameter. 
D)  is located about 2.2 million light years from the sun. 
E)  Only a and c are correct. 
A)  contains about 100 stars. 
B)  is the largest known object in the universe. 
C)  is about 75,000 light-years in diameter. 
D)  is located about 2.2 million light years from the sun. 
E)  Only a and c are correct.

Question 17

The sun is

Accepted Answer

A)  a star. 
B)  1 AU from Earth. 
C)  more than 100 times the diameter of Earth. 
D)  all of the above. 
E)  none of the above. 
A)  a star. 
B)  1 AU from Earth. 
C)  more than 100 times the diameter of Earth. 
D)  all of the above. 
E)  none of the above.

Question 18

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 19

If light takes 8 minutes to reach Earth from the sun and 250 minutes to reach the planet Neptune,what is the approximate distance from the sun to Neptune? Pick the closest-to-correct answer.

Accepted Answer

A)  5 AU 
B)  30 AU 
C)  30 ly 
D)  5 ly 
E)  500 ly 
A)  5 AU 
B)  30 AU 
C)  30 ly 
D)  5 ly 
E)  500 ly

Question 20

The Milky Way Galaxy

Accepted Answer

A)  contains about 100 billion stars. 
B)  is about 100 light-years in diameter. 
C)  is the largest known object in the universe. 
D)  a,b,and c are correct. 
E)  Only a and c are correct. 
A)  contains about 100 billion stars. 
B)  is about 100 light-years in diameter. 
C)  is the largest known object in the universe. 
D)  a,b,and c are correct. 
E)  Only a and c are correct.

Exam 1: Here and Now

Which arrangement is correct in increasing order of mass left to right?

Suppose we wish to travel to the nearest star using a super space ship capable of traveling at 1*1010 km/yr.We have nothing even close to this space ship yet.How long will it take us to get to the nearest star which is about 4*1013 km away from us?

A supercluster refers to a large group of stars within the Milky Way.

The metric system is a decimal system.

Scientific notation is used in science because

If we say that an object is 1,000 light-years away we see it

The average distance from Earth to the sun is

If the nearest star is 4.2 light-years away,then

A kilometer is a longer measure of distance than a mile.

A light-year is the distance light travels in one year.

If the Milky Way Galaxy contains 100 billion stars and only one star in 100 has an Earth-like planet,how many stars in the Milky Way Galaxy have Earth-like planets?

Most of us humans live inside which one of the following?

Mars is farther from the Sun than the Earth.

A(n)____________________ is a collection of billions of stars.

The Milky Way Galaxy

The sun is

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

If light takes 8 minutes to reach Earth from the sun and 250 minutes to reach the planet Neptune,what is the approximate distance from the sun to Neptune? Pick the closest-to-correct answer.

The Milky Way Galaxy

A Users Guide to the Sky

Cycles of the Moon

The Origin of Modern Astronomy

Gravity

Light and Telescopes

Atoms and Spectra

The Sun

The Family of Stars

The Interstellar Medium

The Formation and Structure of Stars

Stellar Evolution

The Deaths of Stars

Neutron Stars and Black Holes

The Milky Way Galaxy

Galaxies

Active Galaxies and Supermassive Black Holes

Modern Cosmology

The Origin of the Solar System

Earth: the Standard of Comparative Planetology

The Moon and Mercury: Comparing Airless Worlds

Venus and Mars

Jupiter and Saturn

Uranus,neptune,and the Kuiper Belt

Meteorites,asteroids,and Comets

Astrobiology: Life on Other Worlds

Filters

Suppose we wish to travel to the nearest star using a super space ship capable of traveling at 110¹⁰ km/yr.We have nothing even close to this space ship yet.How long will it take us to get to the nearest star which is about 410¹³ km away from us?