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Study of Stars

Total questions: 14

Worksheet time: 28mins

Name
Class
Date
1.
Stars form from a large cloud of gas and dust known as:
a)
a nebula
b)
a supernova
c)
a pulsar
d)
a black hole
2.

Which of the following staements about the color of stars is true?

a)

The hottest stars are yellow.

b)

Cooler stars tend to emit blue light.

c)

Hotter stars tend to emit blue light.

d)

Hotter stars tend to emit red light.

3.

Which of the following is true about an irregular galaxy?

a)

An irregular galay has a wel-defined shape.

b)

An irregular galaxy always surrounds a black hole.

c)

An irregular galaxy has no regular shape.

d)

An irregular

galaxy has never been discovered.

4.
As we look farther out in space, we are seeing objects ___________.
a)
as they appeared in the past
b)
as they will look in the future
c)
as they appear right now
d)
that do not give off any light
5.
What unit is used to measure the distance between stars?
a)
astronomical unit
b)
kilometer
c)
light-year
d)
mile
6.
A star P is of the same mass, size and age as the Sun.  Which of these statements about star P is probably correct?
a)
P has a planetary system around it.
b)
P has the same temperature as the sun.
c)
P is at the same distance from the Earth as the Sun.
d)
P is at the same distance from the center of the galaxy as the Sun.
7.

Below is a Hertzsprung-Russell Diagram. It shows how the size, color, brightness, and surface temperature of stars are related.

Which type of star has both the highest temperature and the greatest brightness?

a)

Red Supergiants

b)

White Dwarfs

c)

Blue Super/Giants

d)

Red Giants

8.

Using the diagram, how should you classify a star with the brightness of 100,000 suns and a surface temperature of around 3,000 K?

a)

Red Supergiants

b)

Main Sequence

c)

Blue Giants

d)

White Dwarfs

9.
If two stars have very different temperatures, which of these statements is probably correct about the stars?
a)
The stars differ in age.
b)
The stars differ in color.
c)
The stars are in different galaxies.
d)
The stars differ in brightness.
10.
The most widely accepted theory for the origin of the universe is the ________.
a)
expanding shift theory
b)
cluster theory
c)
big bang theory
d)
steady state theory
11.
Which is the most appropriate instrument to determine the composition of a star?
a)
periscope
b)
telescope
c)
solar cell
d)
spectrometer
12.
What can be said about the lifetime of star whose mass is twice that of the Sun?
a)
Its lifetime will be twice as long as the Sun's lifetime.
b)
Its lifetime will be four times as long as the Sun's lifetime.
c)
Its lifetime will be equal to the Sun's lifetime.
d)
Its lifetime will be shorter than the Sun's lifetime.
13.
The table below gives the percentage of hydrogen in four stars.
Star  Composition
  P  Hydrogen-80%
  Q  Hydrogen-75%
  R  Hydrogen-70%
  S  Hydrogen-65%
Which of these is the youngest?
a)
P
b)
Q
c)
R
d)
S
14.

Star Nebula

---> Massive Star

---> Red Supergiant

------> ?????


If this star is many times more massive than the Sun, what will be the next stage in its life cycle?

a)

Black Hole

b)

White Dwarf

c)

Super Nova

d)

Main Sequence

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