Student Name: Section #: TA Name: 2 In Lab Worksheet: Hypothesis Formation (20 pts) Bold your answers. Project Discussion (3 pts) 1. Give a summary of where and what each partner/group member observed? (1) 2. What possible topics or things could your partner/group member focus on? Share this with them as well. (1) 3. What are some of their and your ideas of what you could focus on? You’re just brainstorming, you still have a few more days to observe and think of possible areas or topics. (1) Part I: Evaluating a local resource study (9 pts) 1. Create a hypothesis about the relationship between the pattern of reef fish distribution along the shores of the main Hawaiian Islands and human population density. (1) 2. Click on Figure 1 on Laulima in this week’s page. What is this graph showing you? (1) Write down any questions you have about the graph or terms you don’t recognize. 3. Based on the (Figure 1) graph of fish biomass, what is the range (estimated) of mean moku resource fish biomass within the main Hawaiian Islands sampled? (1) 4. Where is the lowest biomass in moku located within the MHI (Main Hawaiian Islands)? Describe any patterns you observe. (1) 5. What do you observe about the abundance and distribution of fish around the main eight Hawaiian Islands? (1) 6. Does the data observed in this graph support your hypothesis? Explain why or why not? You can rewrite it or create a new hypothesis based on observations of the fish graph. (1) 7. Click on Figure 2 on Laulima in this week’s page. What is Figure 2 showing you? (1) 8. Does the data shown in this figure help support your hypothesis? Explain your reasoning. (1) 9. Looking at the green highlighted regions (moku) in Figure 1, what other factors might be contributing to the higher level of biomass? (1) Part II: Project/Experiment Design (2 pts) Consider the following experiment: A detergent manufacturer wanted to test which soap detergent removed stains the best. The scientist took 60 identical white T-shirts and applied a square, 3-in by 3-in “stain” of dirt mixed with coffee grounds to each shirt. The scientist then washed each shirt in a 45-minute wash cycle using 85 degrees Celsius water and using one the following soap detergent types: 20 shirts washed with detergent X 20 shirts washed with detergent Y 20 shirts washed with no soap detergent added Answer the following: a) What is the independent variable in this experiment? [0.5 pt] b) What is the dependent variable in this experiment? [0.5 pt] c) Name controlled variables between the three groups. [0.5 pt] (HINT: one controlled variable would be the size of the stain) d) What is the purpose of the “no soap detergent” group? How is this useful to the scientists? [0.5 pts] Part III: Hypotheses: Good and Not Good (6 pts) You can discuss as a group, but you are submitting your own work. Evaluate each of the hypotheses based on the criteria on page 2 of the lab manual. Rate the hypothesis as “Good” or “Not Good” end explain reasons for your rating. Rewrite hypotheses to be good. Does it offer a tentative explanation? Is the hypothesis plausible? Is it supported by known knowledge? Is the hypothesis testable/falsifiable? Observation/Question Hypothesis You notice that most of the students who sit in the front row of class are usually the ones who raise their hands or answer questions. In 2002, Hanauma Bay began showing first-time visitors a 9 minute video before entering the park to educate visitors on marine life, preservation and safety rules. You wonder what type of impact this change may have had. Hawaii imports most of its food. You wonder if encouraging urban farming could change that. Rate the hypothesis and explain. Re-written How would hypothesis if you needed/possible test/observe this? Smarter students will sit closer to the instructor. If a first time visitor watches an education video before entering the marine preserve, they are less likely to stand on the coral. If everyone on Oahu grew food in a garden, Oahu would not need to import produce. Save this file with your completed answers and submit via Laulima.
