8 IS 3.5

What is one use of nuclear reactions besides electricity generation?

• Fuel for large submarines

• Heating homes

• Powering cars

• Cooking food

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Why are radioactive isotopes that emit gamma rays useful for treating cancer?

• They increase cell growth

• They damage cancer cells

• They improve blood circulation

• They enhance immune response

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What did the Curies show about the reaction within uranium nuclei?

• It was able to spontaneously emit radiation

• It was completely stable

• It absorbed all radiation

• It was non-reactive

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What did Becquerel initially think was necessary for the energy release from uranium?

• Sunlight

• Heat

• Water

• Electricity

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What year did Becquerel make his discovery about radioactive decay?

• 1896

• 1905

• 1912

• 1888

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What is the effect of gamma rays on atomic mass and atomic number?

• Increases both

• Decreases both

• No change

• Increases atomic mass only

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What material can block alpha particles?

• Lead box

• Aluminum sheet

• Paper

• Concrete

What is the half-life of Carbon-14?

• 5,730 years

• 710 million years

• 4.5 billion years

• 15 hours

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NGSS.HS-PS1-8

What is the main benefit of using gamma ray images in structural engineering?

• To make buildings look better.

• To detect small cracks in metal structures.

• To increase the height of buildings.

• To change the color of metal.

What is the name of radioactive isotopes that can be followed through the steps of a chemical reaction or process?

• Radiation

• Fusion reaction

• Tracer

• Metalloid