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

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

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

2 Approximately how many marbles will fit into the ball? ,000

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

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

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

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

7 If it takes 5 oz. of paint to paint the smaller frog, how much paint is needed to paint the larger one? A.About 12 oz. B.10 oz C.15 oz D.5 π E.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? A.It gets larger B.It gets smaller C.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? A.It gets larger B.It gets smaller C.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 process of 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 Deaths Per Year / Per Million Vehicles Make/Model TypeDriver DeathsOther DeathsTotal Toyota Avalonlarge Toyota Camrymid-size Volkswagen Jettasubcompact Ford Windstarminivan Nissan Maximamid-size Honda Accordmid-size Subaru Legacy/Outbackcompact Mazda 626compact Chevrolet Malibumid-size Chevrolet SuburbanS.U.V Jeep Grand CherokeeS.U.V Honda Civicsubcompact Toyota Corollasubcompact Ford ExpeditionS.U.V GMC JimmyS.U.V Ford Taurusmid-size Nissan Altimacompact Toyota 4RunnerS.U.V Chevrolet TahoeS.U.V Lincoln Town Carlarge Ford ExplorerS.U.V Toyota Tacomapickup Dodge Neonsubcompact Ford F-Seriespickup

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!


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