Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
Teacher tools for this standard
Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework
- Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
- Guided Notes →One page your students fill in and keep.
- Exit Ticket →Three items at the end of class. No student accounts.
- Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
- Homework →Assign practice; it grades itself.
"The time in which half of the original number of nuclei decay is defined as the half-life, t_1/2. After one half-life passes, half of the remaining nuclei will decay in the next half-life."
"A more precise definition of half-life is that each nucleus has a 50 percent chance of surviving for a time equal to one half-life... the decay of a nucleus is like random coin flipping. The chance of heads is 50 percent, no matter what has happened before."
"When an organism dies, carbon exchange with the environment ceases, and 14C is not replenished. By comparing the abundance of 14C in an artifact... with the normal abundance in living tissue, it is possible to determine the artifact's age."
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"The time in which half of the original number of nuclei decay is defined as the half-life, t_1/2. After one half-life passes, half of the remaining nuclei will decay in the next half-life."
"A more precise definition of half-life is that each nucleus has a 50 percent chance of surviving for a time equal to one half-life... the decay of a nucleus is like random coin flipping. The chance of heads is 50 percent, no matter what has happened before."
"When an organism dies, carbon exchange with the environment ceases, and 14C is not replenished. By comparing the abundance of 14C in an artifact... with the normal abundance in living tissue, it is possible to determine the artifact's age."
What you'll learn
- Explain radioactive half-life and why decay is a statistical, memoryless process
- Define the decay constant and activity, and relate them to half-life
- Calculate half-life, decay constant, remaining quantity, or activity using N = N₀e^(−λt) and R = λN
- Explain how radiometric dating uses known half-lives to determine age
- Solve carbon-14 and uranium-238 dating problems
Slides
Step through the lesson, or watch it as a narrated video
Slides
In development
Not yet available • Check back soon!