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WorksheetsThe Universe
Total questions: 20
Worksheet time: 10mins
What kind of galaxy do we live in?
An elliptical
An irregular
A magellanic
Spiral or disc-like
Where would we find our solar system in this representation of our galaxy?
Near the center
Halfway between the center and the edge
Outside the galaxy
Near the edge of a spiral arm
According to the diagram, which of these types of stars is the brightest?
hot White Dwarf
hot Main Sequence Star
cool Super Giant
cool Giant
The brightest stars can be located-
At the top
On the bottom
To the right
To the left
On a H-R diagram, the temperature increases to the-
Right
Left
The hottest, newest stars are what color?
Blue
Yellow
Purple
Red
The least hot, older stars are which color?
Blue
Orange
White
Red
Which of the following would BEST support the theory that the universe undergoes a life cycle that lasts billions of years?
Finding another planet in the solar system similar to our planet
Discovering life-forms on another planet
Observing blue or red shifted light from stars
Figuring out that many particles formed the universe
Which of these observations of Barnard’s Star is most likely accurate?
Barnard’s Star is less bright than the Sun, has a surface temperature below 3,800K and is red.
Barnard’s Star is less bright than the Sun, has a surface temperature above 3,800K and is red
Barnard’s Star is brighter than the Sun, has a surface temperature below 5,300K and is yellow.
Barnard’s Star is brighter than the Sun, has a surface temperature above 5,300K and is yellow.
Based on the diagram, which type of stars would belong to spectral class O and have the highest luminosity (brightness)?
Main-sequence stars
Giants
Supergiants
White dwarfs
Based on the diagram, which type of stars would belong to spectral class M and have the highest luminosity?
Main-sequence stars
Giants
Supergiants
White dwarfs
The milky way 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?
Earth is a part of this galaxy and not outside of it
Many more stars exist outside our galaxy
The stars in the center of our galaxy are really small
The center of the Milk Way consists of a dense cluster of stars
Which student described stars and nebula's correctly?
Student 1
Student 2
Student 3
Student 4
Why does earth get more energy from the sun than from all other stars in the universe combined?
The sun is much larger than other stars
The sun is much hotter than other stars
The sun has a higher density than other stars
The sun is much closer than other stars
A unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 trillion miles) because objects in space are far apart
Light-year
Mile
Kilometer
Space meter
What evidence indicates that galaxies are moving away from Earth?
Most stars in distant galaxies are classified as red giants
Light generated by galaxies has shifted toward blue
The light generated by the galaxies is shifted toward the red end of the spectrum
Astronomers use X-ray telescopes to measure the temperature of extremely hot, radioactive substances such as-
Clouds of water vapor in the Earth's atmosphere
The carbon dioxide given off by aliens breathing
Gases released by the explosion of a star
Old fragments of stardust moving through space
Astronomers can directly measure the distance of a star from Earth by broadcasting a radio wave in the direction of the star. They determine the distance by measuring how long it takes the radio wave to -
disappear
return
decrease in frequency
go haywire
The Whirlpool galaxy is estimated to be 60,000 light years in diameter. Based on this information, which of the following statements is true?
The galaxy is about 60,000 years old.
The galaxy is about 60,000 km across
It would take 60,000 years for light to travel from one side of the galaxy to the other.
It would take take 60,000 years for a rocket to travel from one side to the other.
What describes cosmic microwave radiation accurately?
An intense way to make space popcorn
Thought to be a piece of leftover light from the big bang theory
A piece of star dust that created the sun
A leftover piece of light that became the dense center of the Milky Way
