8.10A Flashcard - Savvas

Front

What does the Hertzsprung-Russell diagram represent?

Back

The Hertzsprung-Russell diagram is a scatter plot of stars showing the relationship between their absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

Front

Which type of star is the hottest?

Back

Blue stars are the hottest type of stars.

Front

True or False: A large star with more mass has a longer life cycle than a star with less mass.

Back

False. A large star has a shorter life cycle compared to a smaller star.

Front

What stage of the life cycle of a star is characterized by a black hole?

Back

A black hole is the final stage of a massive star's life cycle after it has undergone supernova explosion.

Front

What is absolute magnitude?

Back

Absolute magnitude is a measure of the intrinsic brightness of a star, defined as the brightness of the star as seen from a distance of 10 parsecs.

Front

What type of star has an absolute magnitude of -5M and a temperature of 4,000 K?

Back

A star with an absolute magnitude of -5M and a temperature of 4,000 K is classified as a Supergiant.

Front

What is the life cycle of a star?

Back

The life cycle of a star includes stages such as nebula, main sequence, red giant, supernova, and then either a neutron star or black hole.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, often the birthplace of stars.

Front

What is a blue giant?

Back

A blue giant is a very hot and massive star that is much larger than the Sun and has a short life span.

Front

What happens during a supernova?

Back

A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle, often resulting in the formation of a neutron star or black hole.