Exploring the Life Cycle of Stars

What initiates the collapse of a cloud of dust and gas to form a star?

• Magnetic fields

• External pressure

• Solar winds

• Its own gravity

What is the primary energy source of a star?

• Gravitational collapse

• Magnetic fields

• Chemical reactions

• Nuclear fusion

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

What happens when a star like the Sun runs out of hydrogen?

• It cools down immediately

• It starts to collapse and then fuses helium

• It becomes a black hole

• It explodes as a supernova

Tags

NGSS.HS-ESS1-1

What will our Sun become after it expands and swallows the inner planets?

• A white dwarf

• A neutron star

• A red giant

• A black hole

What is a white dwarf?

• A massive star's core

• A dead remnant core of a star like the Sun

• A type of supernova

• A newly formed star

What is the fate of the most massive stars?

• They remain unchanged

• They become white dwarfs

• They become neutron stars or black holes

• They become red giants

Tags

NGSS.HS-ESS1-3

What is created during a supernova explosion?

• A white dwarf

• A neutron star or black hole

• A red giant

• A planetary nebula

What elements were present in the universe right after the Big Bang?

• All elements

• Iron and nickel

• Hydrogen and helium

• Carbon and oxygen

Tags

NGSS.HS-ESS1-2

Where are elements heavier than hydrogen and helium created?

• Inside stars

• In the Big Bang

• In black holes

• In planetary nebulae

Tags

NGSS.HS-ESS1-3

Why is understanding stars crucial?

• To predict weather patterns

• To understand the origins of the universe and ourselves

• To navigate space

• To find new planets

Tags

NGSS.HS-ESS1-3