Half-life and Radioactive Decay Worksheet
Grade 11 Science worksheet covering half-life calculations, radioactive decay processes, and applications in physics.
Includes
Standards
Topics
Half-life and Radioactive Decay
Name:
Date:
Score:
Read each question carefully and provide your answer in the space provided. Show all calculations where necessary.
1. What is the definition of half-life?
The time it takes for a radioactive sample to completely decay.
The time it takes for half of the radioactive nuclei in a sample to decay.
The time it takes for a radioactive sample to lose all its mass.
The time it takes for a radioactive sample to double its activity.
2. After 3 half-lives, what fraction of the original radioactive material remains?
1/2
1/4
1/8
1/16
3. The process by which an unstable atomic nucleus loses energy by emitting radiation is known as .
4. Carbon-14 dating is used to determine the age of ancient organic materials based on the decay of .
5. A sample of Iodine-131 has a half-life of 8 days. If you start with 100 grams, how much Iodine-131 will remain after 24 days? Show your calculations.
6. Explain why the half-life of a radioactive isotope is a constant value and is not affected by external factors like temperature or pressure.
7. The half-life of a radioactive substance is the time it takes for half of its mass to disappear.
True
False
8. All radioactive isotopes have the same half-life.
True
False
9. Analyze the radioactive decay curve shown below and answer the following questions.
a) What is the approximate half-life of the substance represented by the curve?
b) If the initial amount of the substance was 200 units, how much would remain after two half-lives?
Related Worksheets
Conservation of Charge Worksheet
An 11th-grade physics worksheet focusing on the principle of conservation of electric charge, including conceptual questions and problem-solving.
Spring Potential Energy and Hooke's Law Worksheet
Explore Hooke's Law and calculate spring potential energy with this Grade 11 physics worksheet.
Static Electricity Worksheet
Grade 11 Science worksheet covering fundamental concepts of static electricity, charging methods, and applications.
Law of Conservation of Energy Worksheet
Understand and apply the Law of Conservation of Energy with this Grade 11 Physics worksheet, featuring various question types.
Electric Charge, Field, and Potential Worksheet
This worksheet covers fundamental concepts of electric charge, electric fields, and electric potential for Grade 11 Physics students.
Newton's First Law of Motion Worksheet
Explore Newton's First Law of Motion, also known as the Law of Inertia, through various questions and scenarios for Grade 11 science students.