Unit 07 - Star Cycle (FZS)

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion of a star, marking the end of its life cycle, often resulting in the ejection of hydrogen, helium, and other fused elements.

Front

What force is responsible for nuclear fusion in stars?

Back

Gravity is the force that creates the environment needed for nuclear fusion reactions to occur in stars.

Front

What is the sequence of a star's life cycle?

Back

Nebula -> Main sequence -> Red giant -> Planetary nebula -> White dwarf -> Black dwarf.

Front

What happens when the core of a Red Giant collapses?

Back

When the core of a Red Giant collapses, it becomes a White Dwarf.

Front

What is the only force acting on a nebula?

Back

The only force acting on a nebula is gravity.

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 white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a red giant after it has shed its outer layers.

Front

What is a black dwarf?

Back

A black dwarf is a theoretical stellar remnant that forms when a white dwarf has cooled sufficiently and no longer emits significant heat or light.

Front

What is a red giant?

Back

A red giant is a late stage in a star's life cycle, characterized by a large size and a reddish color, occurring after the star has exhausted its hydrogen fuel.

Front

What is a planetary nebula?

Back

A planetary nebula is an astronomical object formed from the outer layers of a star that has been expelled during the late stages of its evolution.