Galaxies and the Universe
Physics ⇒ Earth and Space Physics
Galaxies and the Universe starts at 9 and continues till grade 12.
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See sample questions for grade 10
A galaxy is observed to be 10 million light-years away. What does this mean about the light we see from it?
Describe the difference between a galaxy and a star cluster.
Describe the main difference between a spiral galaxy and an elliptical galaxy.
Explain what is meant by the term 'cosmic background radiation'.
Explain what is meant by the term 'light-year'.
What is a quasar?
What is the name of the effect that causes the light from distant galaxies to shift toward the red end of the spectrum as they move away from us?
A galaxy is observed to be 10 million light-years away. What does this mean about the light we see from it?
The Milky Way is an example of which type of galaxy?
(1) Elliptical
(2) Spiral
(3) Irregular
(4) Lenticular
What is the approximate number of stars in the Milky Way galaxy?
(1) 1 million
(2) 100 million
(3) 100 billion
(4) 1 trillion
Which of the following best describes a galaxy?
(1) A large group of stars, gas, and dust held together by gravity
(2) A single star and its planets
(3) A cloud of gas in space
(4) A planet orbiting a star
Which of the following best describes a supercluster?
(1) A group of stars
(2) A group of galaxies
(3) A group of galaxy clusters
(4) A group of planets
Fill in the blank: The center of most large galaxies contains a __________ black hole.
Fill in the blank: The closest galaxy to the Milky Way is the __________ Galaxy.
Fill in the blank: The group of galaxies that includes the Milky Way is called the __________ Group.
Fill in the blank: The Milky Way is a __________ galaxy.
True or False: All galaxies are the same size and contain the same number of stars.
True or False: All stars in a galaxy are the same age.
True or False: Most galaxies are moving away from each other, indicating that the universe is expanding.
True or False: The Andromeda Galaxy is moving toward the Milky Way and will eventually collide with it.
