Supernova Quiz

What remains of the original star after a Type I supernova?

• Little or nothing

• Part of the core

• The entire star

• A neutron star

What is a neutron star?

• A star that is as dense as an atomic nucleus

• A star that has exploded

• A star that is less dense than an atomic nucleus

• A star that has no core

What is the typical mass range of neutron stars?

• 1-3 solar masses

• 10-20 solar masses

• 0.1-0.5 solar masses

• 5-10 solar masses

How dense are neutron stars compared to their size?

• Very dense and very small

• Not dense and very large

• Moderately dense and large

• Not dense and small

What is the approximate diameter of a 1-solar-mass neutron star?

• 10 km

• 100 km

• 1 km

• 50 km

What happens to the rotation of a neutron star as the parent star collapses?

• It slows down significantly.

• It stops completely.

• It spins very rapidly, conserving angular momentum.

• It remains unchanged.

What is a typical period for the rotation of a neutron star?

• Several hours

• A few minutes

• Fractions of a second

• Several days

What happens to the magnetic field of a neutron star as a result of the collapse?

• It weakens significantly.

• It becomes enormously strong.

• It remains the same.

• It disappears completely.

When was the first pulsar discovered?

• 1957

• 1967

• 1977

• 1987

What was initially confusing about the first pulsar discovered?

• Its size

• Its color

• Its regular pulses

• Its temperature