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Contamination and Irradiation OALH

Last updated almost 5 years ago
29 questions
Do Now
1

1.What is the half-life of a radioactive isotope?

1

2. What happens to the half-life of a particular isotope as more and more nuclei decay?

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3. What are the units for activity? (1

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4. Name the equipment used to measure count rate.

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Write this number to 3 significant figures 5.66391

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Calculate the half-life using the graph

Pause Points
1

What is contamination?

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What is irradiation?

Key Knowledge - LCWC
1

What is radioactive contamination?

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What affects the level of the hazard from contamination?

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What is irradiation?

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Does an irradiated object because radioactive?

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What is radioactive contamination?

1

What affects the level of the hazard from contamination?

1

What is irradiation?

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Does an irradiated object because radioactive?

Recall Quiz
1

1. What is radioactive contamination?

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2. What affects the level of hazard from contamination?

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3) What is irradiation?

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4) When do seemingly non-radioactive materials emit radiation?

I Do
1

I do:
Explain why a contaminated object is more dangerous than an irradiated object

We Do
1

We do:
Explain why a contaminated object with a half-life of 4500 million years is more dangerous than an object with half-life 30 minutes. Write down the correct three words

You Do
1

You do:
Explain why a contaminated object emitting gamma radiation is more dangerous than once emitting alpha radiation.

1

You Do – How can you protect yourself from the dangers of radiation?

Plenary
1

1. What is the words for unwanted presence of radioactive materials?

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2. What is used to destroy bacteria in food?

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3. What is deliberate or accidental exposure to nuclear radiation?

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4. Which type does not cause an object to become radioactive?

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5. Which type would be caused when there is a disaster in a nuclear power plant?