Hazards of radiation (Physics only)

This lesson will contrast radioactive contamination and irradiation, explores on the hazards associated with radiation and how the risk depends on the half-lives of the isotopes. We will also explore the origin of background radiation and how we can measure the radiation dose that we receive over time.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the best definition of 'activity'?

1/6

Q2.What is the best definition of 'half life'?

2/6

Q3.What is the best definition of 'count rate'?

3/6

Q4.What is activity measured in?

4/6

Q5.If a radioactive sample contained 1600 billion nuclei and its half life was 57 years, after how many years would there be 400 billion nuclei remaining?

5/6

Q6.A radioactive isotope has a half-life of 20 hours. How long will it take for 3/4 of the source to decay?

6/6

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Intro quiz - Recap from previous lesson

Before we start this lesson, let’s see what you can remember from this topic. Here’s a quick quiz!

Q1.What is the best definition of 'activity'?

1/6

Q2.What is the best definition of 'half life'?

2/6

Q3.What is the best definition of 'count rate'?

3/6

Q4.What is activity measured in?

4/6

Q5.If a radioactive sample contained 1600 billion nuclei and its half life was 57 years, after how many years would there be 400 billion nuclei remaining?

5/6

Q6.A radioactive isotope has a half-life of 20 hours. How long will it take for 3/4 of the source to decay?

6/6

Video

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Worksheet

These slides will take you through some tasks for the lesson. If you need to re-play the video, click the ‘Resume Video’ icon. If you are asked to add answers to the slides, first download or print out the worksheet. Once you have finished all the tasks, click ‘Next’ below.

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Hazards of Radiation (Physics only)

Use this quiz to see how well you have learnt about the Uses and Hazards of Radiation.

Q1.What is meant by 'background radiation'?

1/13

Q2.What does contamination mean?

2/13

Q3.What does irradiation mean?

3/13

Q4.Which of the statements below is correct?

4/13

Q5.What percentage of our annual background radiation dose is from cosmic rays?

5/13

Q6.What percentage of our annual background radiation dose is from food?

6/13

Q7.What percentage of our annual background radiation dose is from nuclear power stations and nuclear weapon testing?

7/13

Q8.What percentage of our annual background radiation dose is from radon gas in the air?

8/13

Q9.Is wearing gloves effective at preventing contamination or irradiation or neither.

9/13

Q10.Is lead sheilding effective at preventing contamination or irradiation or neither.

10/13

Q11.Is a film radiation badge effective at preventing contamination or irradiation or neither.

11/13

Q12.When measuring the thickness of paper using beta particles, is contamination or irradiation taking place.

12/13

Q13.When using a radioactive isotope within a pipeline to find leaks, is contamination or irradiation taking place?

13/13

This quiz includes images that don't have any alt text - please contact your teacher who should be able to help you with an audio description.

Quiz:

Hazards of Radiation (Physics only)

Use this quiz to see how well you have learnt about the Uses and Hazards of Radiation.

Q1.What is meant by 'background radiation'?

1/13

Q2.What does contamination mean?

2/13

Q3.What does irradiation mean?

3/13

Q4.Which of the statements below is correct?

4/13

Q5.What percentage of our annual background radiation dose is from cosmic rays?

5/13

Q6.What percentage of our annual background radiation dose is from food?

6/13

Q7.What percentage of our annual background radiation dose is from nuclear power stations and nuclear weapon testing?

7/13

Q8.What percentage of our annual background radiation dose is from radon gas in the air?

8/13

Q9.Is wearing gloves effective at preventing contamination or irradiation or neither.

9/13

Q10.Is lead sheilding effective at preventing contamination or irradiation or neither.

10/13

Q11.Is a film radiation badge effective at preventing contamination or irradiation or neither.

11/13

Q12.When measuring the thickness of paper using beta particles, is contamination or irradiation taking place.

12/13

Q13.When using a radioactive isotope within a pipeline to find leaks, is contamination or irradiation taking place?

13/13

Lesson summary: Hazards of radiation (Physics only)

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