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Stars and Their Characteristics

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Questions and Answers

What process does a star use to generate heat and light?

Nuclear fusion (correct)

Photosynthesis

Evaporation

Chemical reaction

How do scientists determine the elements that make up a star?

By studying the color of the stars

By observing their size

By measuring their distance from Earth

By analyzing the emissions spectra of the light they produce (correct)

Why is the sun's location near the center of the solar system important?

It keeps all the planets in their individual orbits (correct)

It determines the color of the sky

It affects the gravitational pull of other stars

It controls the temperature of other stars

What is the main reason why Earth is warm enough for life to survive?

The heat and light produced by the sun Signup and view all the answers

What determines the amount of solar radiation planets receive from the sun?

Their distance from Earth Signup and view all the answers

What is the main characteristic of red dwarf stars compared to main-sequence stars?

They are cooler Signup and view all the answers

Which type of star is believed to have a life span of 10 trillion years?

Red dwarf stars Signup and view all the answers

What happens when a red supergiant star dies?

It explodes into a supernova Signup and view all the answers

Which category of stars has a life span of several hundred thousand years?

Bright blue tinted stars Signup and view all the answers

What is a defining characteristic of neutron stars?

They have a very high temperature Signup and view all the answers

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

Fusing hydrogen atoms Signup and view all the answers

What are the products of fusing two hydrogen atoms together?

Deuterium and tritium Signup and view all the answers

What can effectively block gamma rays from penetrating?

Thick metal barriers Signup and view all the answers

Why does a star appear brighter when it is hotter?

Higher heat emits more visible light Signup and view all the answers

What factor can affect how bright a star appears from Earth?

The distance between Earth and the star Signup and view all the answers