1. IOT POLY ENGINEERING 3-4 DRILL 26 March 10 An element's (or isotope's) atomic number tells how many protons are in its atoms. An element's (or isotope's) mass number tells how many protons and neutrons in its atoms. 1.Uranium (U) has an atomic number of 92. How many neutrons are in the radioisotope U-235 (mass number 235)? 2.How many neutrons are in the isotope U-238? 143 146

2. IOT POLY ENGINEERING 3-4 Non-Renewable Fuels – Nuclear Radiation: any process in which energy is emitted by one body and is absorbed by another. 1.Ionizing Radiation – nuclear, x-ray, cosmic radiation Chemical changes that damage biological tissues and structures 2.Non-Ionizing Radiation Electromagnetic, light, thermal radiation

3. IOT POLY ENGINEERING 3-3 Non-Renewable Fuels – Nuclear Nuclear Fuel Cycle Front End: preparing the fuel 1.Exploration 2.Mining and Milling 3.Conversion 4.Enrichment 5.Fabrication Service Period: using fuel in reactor Electricity, Medicine, Food and Agriculture, Military Back End: safely manage, contain, reprocess/dispose of spent fuel

4. Topic 1 Energy Sources – Fuels You will draw this pie chart in your notebook. The %s shown in chart are drawn exactly that % of a circle. 1 circle = 360 degrees.

5. Topic 1 Energy Sources – Fuels 1.Calculate angles Circle = 360 degrees a.Oil =.42 x 360 = b.NG =.22 x 360 = c.Coal =.24 x 360 = d.Nuclear =.06 x 360 = e.Renew. =.07 x 360 = 2.Make sure all angles add up to 360 degrees. ~151 ~79 ~86 ~22 ~25 We are 3 degrees over. Take 1 degree from 3 angles above

6. Topic 1 Energy Sources – Fuels 2.Get out your compass and protractor 3.Draw circle with 3” diameter 4.Draw light vertical line up from center point to perimeter d.3”

7. Topic 1 Energy Sources – Fuels 5.Measure angles and draw construction lines 6.Go in order from largest % to smallest %, clockwise.

8. Topic 1 Energy Sources – Fuels If correct: 7.Darken lines and label Oil – 41% NG – 22% Coal – 24% Renewables 7% Nuclear 6% 1997 Global Energy Consumption by Type BEWARE when using Pie Charts: 1.Avoid using Pie Charts when > 6 or 7 components. There are 5 in our example. 2.If %s are similar, it’s difficult to tell the difference between slices.

9. IOT POLY ENGINEERING 3-4 Create a pie chart for the following data: Classwork Petroleum: 39.3% Natural Gas: 23.3% Coal: 22.5% Renewable: 6.7% Nuclear: 8.2% U.S. Energy Consumption by Source

10. IOT POLY ENGINEERING 3-4 Create a pie chart that represents the amount of effort you apply in each of you classes this semester. Assume you give each class a certain percentage of your effort (total is 100%). Classwork/Homework