Name: 
 

Chapter 1



True/False
Indicate whether the statement is true or false. (1-Point Each)
 

 1. 

The sun is a star in the Milky Way Galaxy.
 

 2. 

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

Multiple Choice
Identify the choice that best completes the statement or answers the question. (3-Points Each)
 

 3. 

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

 4. 

We are at the center of the Universe.
a.
Yes
b.
This question can not be answered
c.
We are at the edge of the Universe
d.
No
 

 5. 

Scientific notation is used in science because
a.
it makes conversions between units easy.
b.
all astronomical distances are expressed in metric units.
c.
it makes it easy to write big or small numbers.
 

 6. 

Why do we measure some distances in astronomy in light-years and some in astronomical units?
a.
We never use astronomical units
b.
Convience of Units
c.
We use light years for near objects
d.
We use autronomical units for distant objects
 

 7. 

The average distance from Earth to the sun is one
a.
Astronomical Unit
b.
Light Year
c.
Hour
d.
Thousand Miles
 

 8. 

The number 520,600,000,000 would be written in scientific notation as
a.
5.206 x 11^10
b.
52.06 x 10^10
c.
5.206 x 10^-11
d.
5.206 x 10^11
 



 
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