Supernovae Types

What is the main reason a supernova explosion is silent in space?

• Space is a near vacuum, and sound waves can't travel through a vacuum.

• Sound waves are absorbed by cosmic dust.

• The explosion is too far away to be heard.

• The explosion is not powerful enough to produce sound.

What is a Type II Supernova characterized by?

• Absence of helium lines in its spectrum.

• Presence of helium lines in its spectrum.

• Absence of hydrogen lines in its spectrum.

• Presence of hydrogen lines in its spectrum.

Tags

NGSS.HS-ESS1-3

What is the Chandrasekhar Limit?

• The minimum mass required for a star to become a supernova.

• The maximum mass a white dwarf can have before collapsing.

• The distance at which a supernova can be observed from Earth.

• The temperature at which a star begins to fuse carbon.

What distinguishes a Type Ia Supernova from a Type II Supernova?

• Type Ia has more hydrogen than Type II.

• Type Ia has no hydrogen lines in its spectrum.

• Type Ia is larger than Type II.

• Type Ia occurs in single star systems.

How does a white dwarf in a binary system exceed the Chandrasekhar Limit?

• By losing mass to its companion star.

• By gaining mass from its companion star.

• By absorbing cosmic radiation.

• By fusing hydrogen in its core.

What is a Type Ib Supernova?

• An explosion of a white dwarf with hydrogen lines in its spectrum.

• An explosion of a star with a carbon-rich core.

• An explosion of a massive star after it has lost its outer layers of hydrogen.

• An explosion of a star with a helium-rich core.

What is the main difference between Type Ib and Type Ic Supernovae?

• Type Ic is always brighter than Type Ib.

• Type Ic occurs only in single star systems.

• Type Ic has more hydrogen than Type Ib.

• Type Ic lacks both hydrogen and helium lines in its spectrum.

What happens to a white dwarf when it begins to collapse?

• Its temperature and density increase, leading to fusion and explosion.

• It cools down and becomes a neutron star.

• It absorbs more mass and becomes a black hole.

• It loses mass and becomes a red giant.

Why does a Type Ia Supernova have no hydrogen lines?

• A white dwarf has negligible amounts of hydrogen.

• The hydrogen is absorbed by the companion star.

• The hydrogen is converted into helium.

• The hydrogen is too hot to be detected.

What is the main characteristic of a Type II Supernova?

• It occurs only in binary star systems.

• It is always brighter than a Type Ia Supernova.

• It has no hydrogen lines in its spectrum.

• It has hydrogen lines in its spectrum.

Tags

NGSS.HS-ESS1-3