Unit 3 Practice Test

Front

What is the half-life of a radioactive substance?

Back

The half-life is the amount of time it takes for half of the original amount of a radioactive substance to decay.

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NGSS.HS-PS1-8

Front

How can carbon dating be used to determine the age of fossils?

Back

Carbon dating measures the remaining amount of carbon-14 in a fossil to estimate its age based on the known half-life of carbon-14.

Front

What are the three types of nuclear radiation?

Back

Alpha radiation, beta radiation, and gamma radiation.

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NGSS.HS-PS1-8

Front

What happens to a radioactive substance after one half-life?

Back

After one half-life, half of the original amount of the substance remains.

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NGSS.HS-PS1-8

Front

If a radioactive substance has a half-life of 5,700 years, how much will remain after 11,400 years?

Back

1/4 of the original amount will remain after 11,400 years.

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NGSS.HS-PS1-8

Front

What is nuclear fission?

Back

Nuclear fission is a nuclear reaction where the nucleus of an atom splits into smaller parts, releasing energy and more particles.

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NGSS.HS-PS1-8

Front

What is nuclear fusion?

Back

Nuclear fusion is a process where two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Tags

NGSS.HS-ESS1-1

NGSS.HS-PS1-8

Front

What is gamma radiation?

Back

Gamma radiation consists of high-energy photons emitted by a radioisotope.

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Front

What is the significance of the half-life in radioactive decay?

Back

The half-life helps determine the age of materials and the rate at which a radioactive substance decays.

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NGSS.HS-PS1-8

Front

How much of a radioactive sample remains after three half-lives?

Back

1/8 of the original sample remains after three half-lives.

Tags

NGSS.HS-PS1-8