Life Cycle of Stars and Black Holes

Isaac Ashby explains the life cycle of stars, starting from their formation in stellar nebulas. He describes the role of gravity in star formation and the types of stars: average and massive. The video covers the fusion process, where hydrogen turns into helium, releasing energy. It details the lifecycle of average stars, ending as white dwarfs, and massive stars, which can explode as supernovae, forming neutron stars or black holes. The video concludes with the formation of elements in supernovae and a reminder of the Sun's lifecycle.

What is the initial stage in the life of a star called?

• Stellar Nebula

• Red Giant

• White Dwarf

• Supernova

What force is responsible for pulling gas and dust together to form a star?

• Magnetism

• Gravity

• Electricity

• Friction

Which type of star is similar to our Sun?

• Neutron Star

• Black Hole

• Average Star

• Massive Star

What is the process called where hydrogen atoms combine to form helium?

• Combustion

• Fission

• Evaporation

• Fusion

What happens to an average star after it becomes a red giant?

• It turns into a neutron star

• It explodes in a supernova

• It shrinks into a white dwarf

• It becomes a black hole

What is the final stage of a massive star's life cycle?

• Protostar

• Black Hole

• Red Giant

• White Dwarf

What is created when a massive star explodes in a supernova?

• A red giant

• A new galaxy

• A neutron star or black hole

• A white dwarf

What elements are formed during a supernova explosion?

• Oxygen and Nitrogen

• Carbon and Silicon

• Gold and Silver

• Hydrogen and Helium

What is a black hole?

• A region with gravity so strong that not even light can escape

• A star that has cooled down

• A type of galaxy

• A large asteroid

How long is our Sun expected to live in total?

• 15 billion years

• 20 billion years

• 10 billion years

• 5 billion years