Part 1 – review areas and volumes Part 2 – What is science? An important aspect: science needs to be based on data!

1. Part 1 – review areas and volumesPart 2 – What is science? An important aspect: science needs to be based on data!

2. Approximately how many marbles will fit into the ball? • 200 • 400 • 600 • 800 • 1,000

3. Two circles have a ratio of 2 to 1 in size (radius).What is the ratio of their areas? • 2 to 1 • 3 to 1 • 4 to 1 • 8 to 1 • 2π to 1

4. Two circles have a ratio of 2 to 1 in size (radius).What is the ratio of their areas? • 2 to 1 • 3 to 1 • 4 to 1 • 8 to 1 • 2π to 1

5. Two spheres have a ratio of 2 to 1 in size (radius).What is the ratio of their surface areas? • 2 to 1 • 4 to 1 • 8 to 1 • 4π to 1 • 8π to 1

6. Two spheres have a ratio of 2 to 1 in size (radius).What is the ratio of their volumes? • 2 to 1 • 4 to 1 • 8 to 1 • 4π to 1 • 8π to 1

7. If it takes 5 oz. of paint to paint thesmaller frog, howmuch paint is needed to paint the larger one? • About 12 oz. • 10 oz • 15 oz • 5 π • None of the above

8. Suppose you take a piece of wood and split it into smaller pieces. What happens to the surface area to volume ratio? • It gets larger • It gets smaller • It stays the same

9. Suppose you take a piece of wood and split it into smaller pieces. What happens to the surface area to volume ratio? • It gets larger • It gets smaller • It stays the same

10. Which cools faster, a cake, or a cupcake?Which cools faster, a small planet or a large one?Why?

11. What is science? Science is a processof trying to understand the world by making models (or theories) which have predictive power. It usually involves: • Observing • Looking for patterns (which can be clues to underlying laws) This may involve - Sorting - Classifying - Measuring • Suggesting an explanation (hypothesis) which explains all the observations made so far AND predicts new ones • Making an experiment or collecting more data which tests the prediction • (If the experiment fails) Suggesting another hypothesis, and trying another experiment.... • Telling others what you have discovered. Science is a way of trying not to fool yourself” -Richard Feynman

12. “Science is a way of trying not to fool yourself” -Richard Feynman

13. Which vehicle is safer to drive? Toyota Camry Jeep Cherokee Ford F-series pickup

14. Make/Model Type Driver Deaths Other Deaths Total Toyota Avalon large 40 20 60 Toyota Camry mid-size 41 29 70 Volkswagen Jetta subcompact 47 23 70 Ford Windstar minivan 37 35 72 Nissan Maxima mid-size 53 26 79 Honda Accord mid-size 54 27 82 Subaru Legacy/Outback compact 74 24 98 Mazda 626 compact 70 29 99 Chevrolet Malibu mid-size 71 34 105 Chevrolet Suburban S.U.V. 46 59 105 Jeep Grand Cherokee S.U.V. 61 44 106 Honda Civic subcompact 84 25 109 Toyota Corolla subcompact 81 29 110 Ford Expedition S.U.V. 55 57 112 GMC Jimmy S.U.V. 76 39 114 Ford Taurus mid-size 78 39 117 Nissan Altima compact 72 49 121 Toyota 4Runner S.U.V. 94 43 137 Chevrolet Tahoe S.U.V. 68 74 141 Lincoln Town Car large 100 47 147 Ford Explorer S.U.V. 88 60 148 Toyota Tacoma pickup 111 59 171 Dodge Neon subcompact 161 39 199 Ford F-Series pickup 110 128 238 Deaths Per Year / Per Million Vehicles

15. If you are African-American in the US today, which job are you more likely to have?1 - Sports (playing or coaching)2 – Science and engineering (including medicine). A. 1 is more likely B. 2 is more likely C. About the same D. 2 is ten times more likely than 1

16. If you are African-American in the US today, which job are you more likely to have?1 - Sports (playing or coaching)2 – Science and engineering (including medicine). A. 1 is more likely B. 2 is more likely C. About the same D. 2 is ten times more likely than 1

17. Science needs to be based on data, you can’t just guess!