PS QUIZ 1

What determines the path followed by a star throughout its lifetime?

• Its size

• Its mass

• Its temperature

• Its distance from other stars

What is the main source of fuel for a star?

• Hydrogen and helium

• Carbon and oxygen

• Iron and nickel

• Nitrogen and sulfur

How does a low mass star begin its life?

• As a cloud of gas and dust

• As a giant star

• As a white dwarf

• As a red giant

What happens when a low mass star runs out of hydrogen fuel?

• The core collapses and the star becomes a white dwarf

• The outer layers expand and the star becomes a red giant

• The star explodes in a supernova

• The star remains unchanged

What is the process called when two protons fuse to form a deuteron?

• Nucleosynthesis

• Beta decay

• Triple alpha process

• Fusion reaction

What happens during the helium flash in a low mass star?

• The star becomes a red giant

• The star fuses helium nuclei into larger nuclei

• The star collapses and becomes a white dwarf

• The star explodes in a supernova

What is left behind after a low mass star goes through its final energy reserve?

• A white dwarf

• A black hole

• A neutron star

• A red giant

How does the core of a low mass star change as it runs out of hydrogen fuel?

• It expands and cools down

• It shrinks and gets hotter

• It remains the same size and temperature

• It collapses and becomes a black hole

What is the fate of a low mass star after it becomes a white dwarf?

• It becomes a black hole

• It explodes in a supernova

• It joins more gas particles to form another star

• It remains a white dwarf indefinitely

How does the fate of a high mass star differ from that of a low mass star?

• High mass stars become black holes, while low mass stars become white dwarfs

• High mass stars explode in supernovae, while low mass stars remain unchanged

• High mass stars become red giants, while low mass stars become red dwarfs

• High mass stars fuse heavier elements, while low mass stars only fuse hydrogen and helium