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WorksheetsCosmos Test Review
Total questions: 20
Worksheet time: 12mins
Name
Class
Date
1.
a)
A
b)
B
c)
C
2.
What does the "x" represent on the diagram?
a)
A black hole
b)
Our Solar System
c)
The North Star
d)
A constellation
3.
The Milky Way Galaxy is described as a disk of stars orbiting a central point on the disk. Which of these best explains why people on Earth cannot see the entire shape of the Milky Way?
a)
Earth is par of this galaxy
b)
Many more stars exist outside the galaxy
c)
The stars in the center of the galaxy are extremely small
d)
the center of the galaxy consists of a dense cluster of stars
4.
Which of these describes the shape of the Milky Way Galaxy?
a)
Barred
b)
Irregular
c)
Elliptical
d)
Spiral
5.
The picture above describes the vast empty space between large structures in the universe. What vocabulary word is this describing?
a)
Void
b)
Black hole
c)
Stars
d)
Constillation
6.
Find where star "A" and "B" are labeled on the diagram. Compared to Star A, Star B is -
a)
Brighter and Cooler
b)
Dimmer and Hotter
c)
Dimmer and Cooler
d)
Brighter and Hotter
7.
Sirius B is labeled above. What category of stars does it belong to and is it considered bright or dim?
a)
Variable Stage, Dim
b)
Main Sequence, Bright
c)
White Dwarf, Dim
d)
Protostar, Bright
8.
How is Star A and Sirius B different as far as temperature?
a)
Star A is colder than star B and more dim
b)
Star A is hotter than star B and more dim
c)
Star A is colder than star B and more bright
d)
Star A is hotter than star B and more bright
9.
The Sun is 8 light minutes away from Earth. How long does it take for the Sun's light to reach us?
a)
8 minutes
b)
8 seconds
c)
8 years
d)
Not enough information
10.
A light year is a unit of measure for -
a)
distance
b)
time
11.
A star that is 4 light years from Earth explodes. How long till we see the explosion?
a)
4 minutes
b)
4 years
c)
4 seconds
d)
Not enough information
12.
Betelgeuse is 8,000 light years away. Sirius B is 6,000 light years away. If these stars explode on the same day which one would we know about first?
a)
Betelgeuse, because it is bigger
b)
Sirius B, becuase it is bigger
c)
Betelgeuse, because it is brighter
d)
Sirius B, because it is closer
13.
What is a light year?
a)
The distance that light travels in a year
b)
the time it takes to travel to a star
c)
The speed of light in a year
d)
the distance to the Sun
14.
Which statement about a star life cycle is true?
a)
Stars are said to have life cycles because they change as they go through stages
b)
A star's life cycle is most similar to the life cycle of reptiles
c)
A star's life cycle is most similar to the life cycle of mammals
d)
A star's life cycle typically lasts for hundreds of years.
15.
Which star in the diagram above best represents our Sun's current stage in its life cycle?
a)
White Dwarf
b)
Main Sequencec
c)
Red Giant
d)
Super Giant
16.
A stars life cycle is dependent on its -
a)
distance from Earth
b)
mass
c)
temperature
d)
brightness
17.
What is the color of very hot stars?
a)
Red
b)
Orange
c)
Yellow
d)
Blue
18.
What stage will our Sun enter into next in its life cycle?
a)
White Dwarf
b)
Main Sequence
c)
Red Giant
d)
Super Giant
19.
Magnitude is another word for -
a)
Brightness
b)
Temperature
20.
According to the HR diagram above. Which group of stars are in their final stages of life?
a)
White Dwarf
b)
Main Sequence
c)
Giant
d)
Super Giant
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