Skip to main content

Physical Science:

Dr. Sunil Karna

Section 13.3 Examples

Example 13.3.1.

What is the HR diagram used for?
  1. To identify the different types of stars
  2. To determine the age of a star
  3. To study the evolution of stars
  4. All of the above
Solution.
d.

Example 13.3.2.

Which of the following is NOT a parameter used to construct the HR diagram?
  1. Luminosity
  2. Temperature
  3. Velocity
  4. Spectral type
Solution.
c.

Example 13.3.3.

The majority of stars on the HR diagram are located on the:
  1. Main sequence
  2. Red giant branch
  3. Horizontal branch
  4. White dwarf region
Solution.
a.

Example 13.3.4.

Which of the following types of stars has the longest lifespan?
  1. O-type stars
  2. B-type stars
  3. G-type stars
  4. M-type stars
Solution.
d.

Example 13.3.5.

Which of the following types of stars are located in the upper right portion of the HR diagram?
  1. Red giants
  2. White dwarfs
  3. Main sequence stars
  4. Protostars
Solution.
a.

Example 13.3.6.

Which of the following is NOT a feature of the Sun’s magnetic field?
  1. Sunspots
  2. Solar flares
  3. Solar wind
  4. Asteroids
Solution.
d.

Example 13.3.7.

Which layer of the Sun’s atmosphere is visible during a total solar eclipse?
  1. Photosphere
  2. Chromosphere
  3. Corona
  4. Convection zone
Solution.
c.

Example 13.3.8.

How old is the Sun?
  1. 4.6 million years
  2. 4.6 billion years
  3. 46 million years
  4. 46 billion years
Solution.
b.

Example 13.3.9.

Which of the following is the most accurate description of the Sun?
  1. A planet
  2. A comet
  3. A star
  4. A moon
Solution.
c.

Example 13.3.10.

Which of the following is NOT a possible fate for a star?
  1. Black hole
  2. Red giant
  3. White dwarf
  4. Superstar
Solution.
d.

Example 13.3.11.

What is a planetary nebula?
  1. A cloud of gas and dust that forms around a star as it dies
  2. A type of star that pulsates regularly
  3. A star that has exhausted all of its fuel
  4. A dense remnant of a supernova explosion
Solution.
a.

Example 13.3.12.

What is a neutron star?
  1. A type of white dwarf
  2. A star made entirely of neutrons
  3. A star that has not yet undergone a supernova explosion
  4. A star that is in the process of becoming a black hole
Solution.
b.
PrevTopNext