Example 14.2.1.
What is the current estimate for the age of the universe?
- 4.5 billion years
- 13.8 billion years
- 100 billion years
- 1 trillion years
Solution.
b.
Section 14.2 Examples
Example 14.2.2.
What is dark matter?
- Matter made up of exotic particles that do not interact with light or other forms of electromagnetic radiation
- Matter that emits no light or radiation
- Matter that is invisible to telescopes
- All of the above
Solution.
d.
Example 14.2.3.
Which of the following is the most widely accepted theory of the universe’s origin?
- The steady state theory
- The big bang theory
- The inflation theory
- The cyclic model
Solution.
b.
Example 14.2.4.
What is a quasar?
- A type of galaxy that emits intense radiation from its center
- A massive star that has exploded in a supernova
- A region of space with an extremely strong gravitational field
- A type of dark matter
Solution.
a.
Example 14.2.5.
What is the name of the structure in the universe that contains large groups of galaxies?
- Universe
- Supercluster
- Solar System
- Galaxy Cluster
Solution.
b.
Example 14.2.6.
What is the name of the galaxy that contains our solar system?
- Andromeda
- Milky Way
- Triangulum
- Sombrero
Solution.
b.
Example 14.2.7.
Which of the following is the most accurate description of Hubble’s law?
- The velocity of a galaxy is proportional to its distance from us.
- The velocity of a galaxy is inversely proportional to its distance from us.
- The acceleration of a galaxy is proportional to its distance from us.
- The acceleration of a galaxy is inversely proportional to its distance from us.
Solution.
a.
