Physics: Radioactivity And Particles: Units
Overview
Radioactivity calculations use time and activity, so you need to be comfortable converting between seconds, minutes and hours, and you need to understand the becquerel as the unit of radioactive decay rate.
This reference covers the five units for the radioactivity section of the Edexcel specification: becquerel, centimetre, hour, minute and second.
Objectives
- Use the following units: becquerel (Bq), centimetre (cm), hour (h), minute (min) and second (s)
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on Physics: Radioactivity And Particles: Units. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- One becquerel is equal to: A) 1 decay per minute B) 1 decay per second C) 1 decay per hour D) 100 decays per second Answer: B
- A source has a half-life of 30 minutes. After 90 minutes the activity will have decreased to: A) 1/2 of the original B) 1/4 of the original C) 1/8 of the original D) 1/16 of the original Answer: C
- The unit used to measure the thickness of an absorber in a radiation experiment is: A) metre B) centimetre C) millimetre D) kilometre Answer: B
- How many seconds are in 1.5 hours? A) 90 B) 900 C) 5400 D) 9000 Answer: C
- Activity is measured in: A) Coulombs B) Hertz C) Becquerels D) Watts Answer: C
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Practice Mock Questions
Want to practice mock questions on Physics: Radioactivity And Particles: Units? Download the Green Bridge CBT app to access mock questions and full practice assessments for this topic.
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