GCSE Physics - The Life Cycle Of Stars / How Stars are Formed and Destroyed #84

The video explains the lifecycle of stars, starting from a nebula, forming a protostar, and transitioning into a main sequence star through nuclear fusion. As stars exhaust their hydrogen, they evolve into red giants or red super giants, depending on their size. Red giants shed their outer layers to become white dwarfs, eventually cooling into black dwarfs. Red super giants undergo supernova explosions, forming neutron stars or black holes. The video concludes with a recap of these processes.

What is the initial stage in the formation of a star?

• A white dwarf

• A nebula

• A neutron star

• A black hole

What process balances the outward pressure in a main sequence star?

• Magnetic fields

• Nuclear fusion

• Gravitational collapse

• Electromagnetic radiation

Which element is formed during the later stages of a star's life cycle?

• Helium

• Carbon

• Hydrogen

• Iron

What happens to a small to medium star after it becomes a red giant?

• It explodes in a supernova

• It turns into a neutron star

• It forms a white dwarf

• It becomes a black hole

What is the final stage of a white dwarf?

• A supernova

• A red giant

• A neutron star

• A black dwarf

What is the fate of a red super giant after a supernova explosion?

• It becomes a white dwarf

• It forms a neutron star or a black hole

• It turns into a red giant

• It becomes a protostar

What is a black hole?

• A dense core left after a supernova

• A star that has cooled down

• A region where gravity is so strong that light cannot escape

• A cloud of dust and gas