Worksheet: Stellar Evolution
In this worksheet, we will practice describing how stars of different masses develop over the course of billions of years.
For approximately how long does a star like the Sun remain a main sequence star?
- A100 million years
- B100 billion years
- C10 million years
- D10 billion years
- E1 trillion years
Which of the following is the correct description of a black dwarf star?
- AA black dwarf star is an extremely dense object that is made up only of neutrons.
- BA black dwarf star is an object that has been left after a supernova in which all of the matter has been compressed into a single point. The gravitational field is so strong that not even light can escape.
- CA black dwarf star is a type of star that is not massive enough to trigger nuclear fusion in its core, and so the only light it emits comes from its heat.
- DA black dwarf star is a white dwarf star that has cooled so that it no longer emits any light.
- EA black dwarf star is a type of star that only emits gamma radiation and does not emit any visible light.
Which of the following is the correct description of a nebula?
- AA nebula is a collection of billions of stars.
- BA nebula is a dense object that is made up only of neutrons.
- CA nebula is a collection of galaxies.
- DA nebula is a cloud of gas and dust within a galaxy.
- EA nebula is a fast-spinning neutron star.
The diagram shows nine possible stages in the evolution of a star. For a star that will eventually become a neutron star, give the correct stages in the correct order, starting from a nebula.