8.9A IPC

Front

What is the Hertzsprung-Russell diagram?

Back

A graphical representation of stars that plots their luminosity against their surface temperature, used to understand stellar evolution.

Front

What does luminosity refer to in stars?

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Luminosity is the total amount of energy emitted by a star per unit of time, often measured in watts.

Front

What is a main sequence star?

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A main sequence star is a star that is in the stable phase of its life cycle, where it fuses hydrogen into helium in its core.

Tags

NGSS.HS-ESS1-1

Front

What happens to a star when it runs out of hydrogen?

Back

When a star runs out of hydrogen, it can expand into a red giant as it begins to fuse helium and other heavier elements.

Tags

NGSS.HS-ESS1-1

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 cooler surface temperature, resulting in a reddish appearance.

Front

What is a white dwarf?

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A white dwarf is the remnant core of a star that has exhausted its nuclear fuel and shed its outer layers, typically very dense and hot.

Tags

NGSS.HS-ESS1-3

Front

What is a supernova?

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A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle, often resulting in the formation of a neutron star or black hole.

Tags

NGSS.HS-ESS1-3

Front

What is a neutron star?

Back

A neutron star is the collapsed core of a massive star that has undergone a supernova explosion, extremely dense and composed mostly of neutrons.

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What is a black hole?

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A black hole is a region of space where the gravitational pull is so strong that nothing, not even light, can escape from it.

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What is stellar evolution?

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Stellar evolution is the process by which a star changes over the course of time, including its formation, life stages, and eventual death.

Tags

NGSS.HS-ESS1-1

NGSS.HS-ESS1-3