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Slide 2 What Makes Good Science? Slide 3 Good Science is about Making Observations Does all of the information on the label support the claim that this juice is 100% juice? Ingredients (on back): apple, grape, cherry and pineapple juices from concentrate (filtered water and juice concentrates), natural flavors, carmine (color), ascorbic acid (vitamin C), malic acid a) Yes, the label says that it contains fruit punch. b) No, there are other ingredients beside juice. c) Yes, there are 4 kinds of juice in the ingredients. d) Theres no way to tell from the label. Slide 4 Good Science is about Making Inferences Based on Evidence What does this ad want you to infer about Lysol? a) Lysol comes in many colors. b) Lysol cleans better than other cleaners. c) The new scent is better than the old scents. d) Lysol cleans soap scum. Slide 5 Good Science is about Making Inferences Based on Evidence What evidence is needed to support the claim that Lysol cleans better than others? a) Number of people who prefer Lysol over other brands b) Number of bottles of Lysol sold compared to other brands c) Percent of soap scum left after cleaning a shower with Lysol d) Percent of soap scum removed from a shower by Lysol compared to other cleaners Slide 6 Experiment #1 Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the green slime. Homer decides to check this out by spraying of the shower with coconut juice. He sprays the other of the shower with water. After 3 days of "treatment" both sides of the shower still look the same. Homer notices that his shower is covered in a strange green slime. His friend Barney tells him that coconut juice will get rid of the green slime. Homer decides to check this out by spraying of the shower with coconut juice. He sprays the other of the shower with water. After 3 days of "treatment" both sides of the shower still look the same. Slide 7 Good Science is about Testing a Hypothesis a) Green slime in a shower can be removed with coconut juice. b) Coconut juice does not remove green slime. c) There is green slime in his shower. d) The green slime can be removed. What is Homers hypothesis? Slide 8 Good Science is about Knowing All of Your Variables What is Homers independent (manipulated) variable? a) Amount of green slime b) Applying coconut juice c) Applying water d) Number of days Slide 9 Good Science is about Knowing All of Your Variables What is the dependent (responding) variable? a) Amount of green slime b) Applying coconut juice c) Applying water d) Number of days Slide 10 Good Science is about Knowing All of Your Variables Which of these variables did Homer keep as constants (controlled variables)? a) Used both liquids (coconut juice and water) in the same shower b) Applied both liquids for 3 days c) Sprayed an equal section of the shower with each liquid d) Homer kept all of these things constant Slide 11 Good Science is about Using Data to Draw Conclusions Based on his data, what should Homer conclude? a) Coconut juice cannot remove green slime. b) Spraying coconut juice on green slime for 3 days does not seem to decrease the amount of slime. c) Green slime cannot be removed from a shower. d) Barney is a liar. Slide 12 Experiment #2 SpongeBob loves to garden and wants to grow lots of pink flowers for his pal Sandy. He bought a special Flower Power Fertilizer to see if it will help plants produce more flowers. He plants two plants of the same size in separate containers with the same amount of potting soil. He places one plant in a sunny window and waters it every day with Flower Power Fertilizer. He places the other plant on a shelf in a closet and waters it with plain water every 2 days. Slide 13 Good Science is about Testing a Hypothesis What is SpongeBobs hypothesis? a) He needs more flowers. b) Flower Power Fertilizer and water will both cause a plant to produce flowers. c) Flower Power Fertilizer will cause a plant to produce more flowers. d) Sandys favorite color is pink. Slide 14 a) Size of the plants b) Amount of water c) Special fertilizer d) Number of flowers per plant Good Science is about Knowing All of Your Variables What is SpongeBobs independent (manipulated) variable? Slide 15 a) Size of the plants b) Amount of water c) Special fertilizer d) Number of flowers per plant Good Science is about Knowing All of Your Variables What is SpongeBobs dependent (responding) variable? Slide 16 Good Science is about Knowing All of Your Variables a) Amount of special fertilizer b) Amount of potting soil c) Original size of plants d) Both B and C What variables did SpongeBob keep as constants? Slide 17 Good Science is about Comparing to a Control Group What is SpongeBobs experimental group? a) The plant that got Flower Power Fertilizer b) The plant that got plain water c) Both plants d) He doesnt have an experimental group 123456789101112131415161718192021222324252627282930 Slide 18 Good Science is about Comparing to a Control Group What is SpongeBobs control group? a) The plant that got Flower Power Fertilizer b) The plant that got plain water c) Both plants d) He doesnt have a control group Slide 19 Good Science is about Collecting Reliable Data a) He had too many variables that werent controlled. b) He didnt use fertilizer in both plants. c) He planted the plants in separate containers. d) He didnt have a hypothesis. How will SpongeBobs experiment make his results unreliable? Slide 20 Experiment #3 Krusty the Clown was told that a certain itching powder was the newest best thing on the market; it even claims to cause 50% longer-lasting itches. Krusty buys the itching powder and compares it to his usual product. Subject A is sprinkled with the original itching powder, and Subject B is sprinkled with the Experimental itching powder. Subject A reported having itches for 30 minutes. Subject B reported having itches for 45 minutes. Slide 21 Good Science is about Comparing to a Control Group Who is Krustys control group? a) Subject A b) Subject B c) Both Subjects A & B d) He doesnt have a control group Slide 22 Good Science is about Collecting Reliable Data :10123456789101112131415161718192021222324252627282930 How could Krusty make his data more reliable? a) Test both itching powders on both subjects b) Include more people in his experiment c) Test the itching powders on himself d) A and B Slide 23 Good Science is about Using Ethical Practices :10 123456789101112131415161718192021222324252627282930 What should Krusty do to make sure that his experiment is ethical? a) Make sure the subjects arent allergic to any ingredients in the itching powder b) Inform the subjects about any possible side effects of the itching powder c) Only apply itching powder to people who have agreed to participate in the experiment d) All of the above