Stars Practice

Front

What is a star's luminosity?

Back

Luminosity is a measure of how bright a star is.

Front

What happens to stars as we move to the left on the Hertzsprung-Russell diagram?

Back

Stars get hotter.

Front

Which of the following is NOT a final stage of a star: black hole, black dwarf, neutron star, red giant?

Back

Red giant is NOT a final stage of a star.

Front

What is the sequence of stages for a star?

Back

Nebula → Main sequence → Red giant → Planetary nebula → White dwarf → Black dwarf.

Front

What type of star makes up 90% of all stars?

Back

Main sequence stars.

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 black hole?

Back

A black hole is a region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.

Front

What is a red giant?

Back

A red giant is a late stage in the life cycle of a star, characterized by a large size and a reddish color.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a low or medium mass star after it has exhausted its nuclear fuel.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle.