Informal assessment – monitoring student questions and interactions as they complete the radioactive particles chart and the decay equation practice.

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’snuclear 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 UpRadioactive Particles ChartRadioactive Particles Chart

DiscussionWriting Decay EquationsDecay Equation PracticeExtension: Compute your Own

Radiation DoseClosure

Why do scabs form on the skin?

Alpha BetaGamma

Today you will research the three types of radioactive decay

Use Chapter 4 p. 122 – 125 in the textbook to complete the chartUse 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.

Radiation Symbol

Charge

Composition

Is shielded or stopped by?

Alpha

Beta

Gamma

Radiation Symbol

Charge

Composition

Is shielded or stopped by?

Alpha

2+ Charge

2 p+ and 2 n0

Beta

-1 Charge

Stream of high speed e-

GammaNo Charge

Very high energy electromagnetic radiation

Radiation Composition

& Symbol

Is shielded or stopped by?

Alpha

2+ Charge

2 p+ and 2 n0

paper

Beta

-1 Charge

Stream of high speed e-

Clothing, wood

GammaNo 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?