Unit 5 Nuclear Energy and Half-Life

Fission reactions produce ____ which can cause chain reactions.

• Electrons

• Photons

• Tachyons

• Neutrons

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The energy that is produced by the Sun is made by

• Radioactive spiders

• Queso

• Fusion

• Fission

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What is the name of the process that combines smaller hydrogen atoms into larger helium atoms?

• Hydrolysis

• Fusion

• Fission

• Endothermic

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The half-life of element X is 100 years. Explain how to figure out the age of a substance that has 25% of element X left.

• Multiply 100 years by 2 since two half-lives have gone.

• Multiply 25 times 100 years since only 25% of the element remains.

• Divide 100 years by 2 since the element has gone through two half-lives.

• Multiply 4 times 100 years since the element has gone through 4 half-lives.

A radioactive isotope has a half-life of 8 hours. How much of a 1000 gram sample will be left after 16 hours?

• 750 grams

• 500 grams

• 125 grams

• 250 grams

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NGSS.HS-PS1-8

A half-life of an element is 20 days. How old is the element in which it has undergone 3 half-lives?

• 80 days

• 20 days

• 60 days

• 40 days

Generating electricity in nuclear power plants is ____ than producing electricity from coa,l oil, gas or renewable energy sources.

• More expensive

• Cheaper

• I think Carson Beck just threw another interception

• None of the above

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Nuclear power plants have costs such as the potential for accidents, producing nuclear waste, and limited amounts of uranium. Is the fact that nuclear power plants can work when solar and wind power are unavailable a cost or a benefit?

• Neither

• Both

• Cost

• Benefit

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Nuclear power plants generate large amounts of power with limited production of __ gases.

• Chips and salsa

• Bluey'shouse

• Greenhouse

• Brickhouse

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___ ___ produces less greenhouse gases than the other options listed.

• Coal burning

• Nuclear fission

• Oil burning

• Dragon on a big treadmill

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