Half – Life Lab / Radioactive Incident Research Nuclear PBL Unit – Day 3

Common Core Connection Objectives Today I will be able to: Explain how some isotopes are made of unstable nuclei that decay over a specific half-life and emit particles and energy Apply knowledge of radioactive principles to researching a radioactive incident Informal Assessment – monitoring student questions and interactions as they complete the activities Formal assessment – analyzing student responses to the lab questions and exit ticket Common Core Connection Use technology and digital media strategically and capably Reason abstractly and quantitatively

Lesson Sequence Evaluate: Warm-Up Engage/Explore: Half-Life Lab Elaborate: Radioactive Incident Research Evaluate: Exit Ticket

Warm-Up What are the 4 types of radioactive particles? What are the example equations for these particle emissions?

Objective Today I will be able to: Explain how some isotopes are made of unstable nuclei that decay over a specific half-life and emit particles and energy Apply knowledge of radioactive principles to researching a radioactive incident

Homework For your radioactive incident: Determine the quantity (mass) of your isotope involved in the incident. Ex. 2.0 g Thorium-233 Determine the half-life of your isotope Ex. The half-life of thorium-233 is 22 minutes

Agenda Warm-Up Half-Life Lab Radioactive Incident Research Exit Ticket

Radioactivity Half-Life Lab

What is radioactivity? Act of emitting radiation spontaneously Atomic nucleus is unstable and wants to give up energy to form a more stable configuration Radiation can be given off as particles or high energy rays

What is radioactivity half-life? Half – life – the time it takes for half of the atoms in a given mass to disintegrate (release radiation) and become more stable Length of time varies ½ second to a billion years

Twizzler Half-Life Lab Follow Ms. Ose’s directions on how to complete the lab. Once you finish the questions, turn the lab into Ms. Ose and begin working on the research in lab.

Radioactive Incident Research

Exit Ticket How much research were you able to accomplish today? What have you learned about your radioactive incident?