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WorksheetsThe Universe 8th Grade
Total questions: 21
Worksheet time: 21mins
Name
Class
Date
1.
The light of Proxima Centaury takes 4.3 years to reach Earth. What does it mean?
a)
The star is 4.3 miles from Earth
b)
The star is 4.3 light years from the Earth
c)
The star is 43.000.0000.000. light years fromm the Earth
d)
The star is 4.3 km from the Earth
2.
Which section of the spectrum is the ONLY one we can see?
a)
X-rays
b)
Visible Light
c)
Gamma Rays
d)
Ultraviolet Rays
3.
Our galaxy is a ________ galaxy.
a)
Irregular
b)
Elliptical
c)
Spiral
d)
Twirl
4.
The blue section of the wave is measuring _________________.
a)
wavelength
b)
crest
c)
trough
d)
amplitude
5.
Look at the H-R Diagram. Where is Pollux?
a)
In the main sequence
b)
with the Super Giants
c)
with the Giants
d)
with the White Dwarfs
6.
Look at the H-R Diagram. Where is Polaris?
a)
In the main sequence
b)
with the Super Giants
c)
with the Giants
d)
with the White Dwarfs
7.
Red stars are the _____________.
a)
hottest
b)
coolest
c)
biggest
8.
Blue stars are the _____________.
a)
hottest
b)
coolest
c)
smallest
9.
Which one is the correct order from hottest to coolest stars?
a)
blue, yellow,orange, red
b)
red, orange, yellow, blue
c)
blue, red, yellow, orange
d)
yellow, blue, orange, red
10.
How many stars are between the Earth and the Sun?
a)
67
b)
99,345
c)
0
d)
34
11.
Which galaxy is moving the slowest?
a)
Galaxy A
b)
Galaxy B
c)
Galaxy C
d)
Galaxy D
12.
How can a scientist tell how quickly and object in space is moving and whether or not its moving toward Earth?
a)
redshift and blueshift
b)
ultraviolet and infrared
c)
absorption and radiation
d)
absorption and emission
13.
How bright a star APPEARS FROM EARTH is called what?
a)
apparent magnitude
b)
absolute magnitude
c)
size
d)
position in the sky
14.
True or False: We use light years to measure great distances in the Universe because it makes the numbers easier to understand.
a)
True
b)
False
15.
A light year is related to ...
a)
Time
b)
Energy
c)
Distance
d)
Mass
16.
Where is the Earth found in our Milky Way Galaxy?
a)
In the middle of the galaxy
b)
On the Edge of a Spiral arm
c)
In Andromeda
d)
Earth is moving side to side of the galaxy
17.
What is the brightness star in this HR diagram?
a)
Barnard´s star
b)
Betelguese
c)
Deneb
d)
Sirius B
18.
What force keeps together all the stars in a galaxy?
a)
Centrifugal force
b)
Fiction
c)
Gravity
d)
Wind
19.
One star is moving away from the solar system. What color will the shift be?
a)
Has a blue shift
b)
Has a yellow shift
c)
Has a green shift
d)
Has a red shift
20.
What type of galaxy is this?
a)
Spiral
b)
Elliptical
c)
Irregular
d)
Irrational
21.
Look at the picture. Which stars have an
Absolute Magnitude of -8?
Absolute Magnitude of -8?
a)
Betelgeuse
b)
the Sun
c)
White Dwarfs
d)
Antares
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