 Informal assessment – monitoring student questions and interactions as they complete the radioactive particles chart and the decay equation practice  Formal assessment – analyzing student responses to the warm up, closure and alpha/beta decay practice problems  Common Core Connection  Build Strong Content Knowledge  Use technology and digital media strategically and capably  Reason abstractly and quantitatively  Look for and make use of structure  Make sense of problem and persevere in solving them

 Evaluate: Warm Up (5 min)  Explain: Radioactive Particles Chart (10-15 min)  Elaborate: Radioactive Particles Chart Discussion (10 min)  Informal assessment of students questions and responses  Explain: Writing Decay Equations (10 min)  Elaborate: Decay Equation Practice (1o min)  Informal assessment of student questions and responses  Formal assessment of student answers  Elaborate: Compute your Own Radiation Dose (Time Permitting –(5 min)  Evaluate: Closure (3 min)  Formal assessment of meeting the objectives

 Calvert Cliff’s nuclear power plant is 61.2 miles away from Howard High School.  Do you feel safe having a nuclear power plant that close to home?  Do the benefits of the power plant, outweigh the risks of having a nuclear power plant?  How many nuclear power plants are in Maryland?  What region of the United States has the most power plants?

Calvert Cliffs is Maryland’s nuclear power plant

 Research and Test Reactors  Armed Forces Radiobiology Research Institute  National Institute of Standards & Technology  University of Maryland  Fort Belvoir in Virginia is undergoing decommissioning

map: Nuclear Energy Institute

 Today I will be able to:  Differentiate between the composition and materials required to shield alpha, beta and gamma emissions.  Identify the benefits and risks associated with the practical uses of alpha, beta and gamma emissions.  Write balanced alpha and beta decay equations.

 Begin studying for your Unit 3 Exam on Tuesday, October 14  Topics: ▪ Atomic Structure ▪ History of the Atom ▪ Radioactivity  Complete the alpha and beta decay practice problems worksheet

 Warm Up  Radioactive Particles Chart  Radioactive Particles Chart Discussion  Writing Decay Equations  Decay Equation Practice  Extension: Compute your Own Radiation Dose  Closure

 Why do scabs form on the skin?

 Alpha  Beta  Gamma  Today you will research the three types of radioactive decay

Use Chapter 4 p. 122 – 125 in the textbook to complete the chart Use your electronic device to research how the radiation can be blocked and practical uses. Make a list of credible sources you used as you completed the research

We will review the information filled in on the chart as a class.

RadiationSymbol Charge Composition Is shielded or stopped by? Alpha Beta Gamma

RadiationSymbol Charge Composition Is shielded or stopped by? Alpha 2+ Charge 2 p+ and 2 n 0 Beta -1 Charge Stream of high speed e- Gamma No Charge Very high energy electromagnetic radiation

RadiationComposition & Symbol Is shielded or stopped by? Alpha 2+ Charge 2 p+ and 2 n 0 paper Beta -1 Charge Stream of high speed e- Clothing, wood Gamma No Charge Very high energy electromagnetic radiation Concrete, lead

, aluminum

Unstable Isotope New Decay Product Radioactive Particle Symbol

 The Calvert Cliff’s nuclear power plant uses Uranium – 235. Write the alpha decay equation

 The radioisotope yttrium-90 is used in cancer treatments. Write the beta decay equation.

 Gamma radiation is emitted from Uranium 235 at the nuclear power plant. Write an equation representing the gamma energy emitted.

 What quantity of radiation are you exposed to per year?  Were there any radiation values that surprised you?

 No evidence of cancer occurring <10,000 mrem exposure  Body has time to repair cells when exposed to low concentrations of radiation  Correlation has been found with cancer and radiation exposure >50,000 mrem

 After learning about the three types of radioactive decay:  Do you feel that the benefits of radioactive power outweigh the risks?  Do you feel safe having a nuclear power plant 61.2 miles away from home?