Question 1

How does the color of a star relate to its temperature?

Accepted Answer

Cooler stars are red, and hotter stars are blue.

Answer

Temperature has no effect on a star’s color.

Answer

Stars with higher temperatures appear white or yellow

Answer

Cooler stars are blue, and hotter stars are red.

Question 2

Which process generates energy in stars, and how does it differ from processes like fission?

Accepted Answer

Nuclear fusion combines light elements, while fission splits heavy elements.

Answer

Both nuclear fusion and fission are the same processes.

Answer

Combustion is more efficient than both fusion and fission.

Answer

Nuclear fusion splits heavy elements, while fission combines light elements.

Question 3

What distinguishes luminosity from apparent magnitude?

Accepted Answer

Luminosity measures intrinsic brightness; apparent magnitude measures brightness as seen from Earth.

Answer

Luminosity depends on distance, while apparent magnitude does not.

Answer

Luminosity and apparent magnitude are identical.

Answer

Apparent magnitude is the total light emitted by a star, while luminosity depends on distance.

Question 4

Why are blue giants hotter than red giants?

Accepted Answer

Blue giants have higher surface temperatures and emit more energy.

Answer

Blue giants burn hydrogen at much cooler temperatures.

Answer

Blue giants have lower surface temperatures but emit more energy

Answer

Blue giants burn hydrogen at much cooler temperatures.

Question 5

How does the mass of a star influence its lifespan?

Accepted Answer

Stars with more mass burn through their fuel faster and have shorter lifespans.

Answer

Stars with more mass burn cooler and live longer.

Answer

Stars with less mass burn through their fuel faster and have shorter lifespans.

Answer

A star’s mass does not affect its lifespan.

Question 6

What is the most abundant element found in stars?

Accepted Answer

Hydrogen

Answer

Oxygen

Answer

Helium

Answer

Carbon

Question 7

Why is nuclear fusion important for stars?

Accepted Answer

It is responsible for generating energy in stars.

Answer

It allows stars to form new planets.

Answer

It helps stars reflect light from the Sun.

Answer

It helps stars become white dwarfs.

Question 8

An astronomer measures the brightness of a star as seen from Earth. Which term best describes what they are measuring?

Accepted Answer

Apparent magnitude

Answer

Luminosity

Answer

Absolute magnitude

Answer

Star temperature

Question 9

Which of the following types of stars is the hottest and appears blue?

Accepted Answer

Blue giant

Answer

Yellow dwarf

Answer

White dwarf

Answer

Red giant

Question 10

A scientist observes a dying Sun-like star. Which final stage is it most likely to become, and why?

Accepted Answer

A white dwarf, because it is a small, dense remnant of a Sun-like star.

Answer

A black hole, because all stars eventually collapse into black holes.

Answer

A neutron star, because it will collapse into an extremely dense object.

Answer

A red giant, because it will expand and keep shining forever.

Related quizzes

Related quizzes