Do Now & Agenda Get Unit Conversions HW stamped off if you did not do so last class Work on Unit Conversions Warm Up

Unit Conversions Warm-Up 0.66 gallons 2640 feet 64,800 seconds 0.175 minutes 0.14564 days 64,592 yards

Identify the problem Form a Hypothesis Create an Experiment Perform an Experiment Analyze the Data Modify the Experiment Communicate the Results

Video Notes bit.ly/1LXJcB1

Additional Information (not in video) Constants=variables that are kept the same throughout the experiment

Patterns in Data: When appropriate, data can be plotted as a scatterplot and a trend (pattern or relationship) may be observed between the two variables Direct Relationship=as one variable increases, the other variable also increases

Inverse Relationship= as one variable increases, the other variable decreases

Law vs. Theory A laW tells us what is happening/what the relationship between variables is; often has a formula Ex: Law of Gravity, Boyles’ Law A theorY tells us whY something happens Ex: Atomic Theory, Cell Theory A theory cannot become a law!

Practice Answer the questions for the 2 scenarios

Scenario 1 Mr. Krabs wants to make Bikini Bottoms a nicer place to live. He has created a new sauce that he thinks will reduce the production of body gas associated with eating crabby patties from the Krusty Krab. He recruits 100 customers with a history of gas problems. He has 50 of them (Group A) eat 2 crabby patties with 3 squirts of the new sauce on each patty. The other 50 (Group B) eat 2 crabby patties with 3 squirts of sauce on each patty that looks just like new sauce but is really just a mixture of mayonnaise and food coloring. Both groups were told that they were getting the sauce that would reduce gas production. Two hours after eating the crabby patties, 30 customers in group A reported having fewer gas problems and 8 customers in group B reported having fewer gas problems. 

Scenario 2 Patrick believes that fish that eat food exposed to microwaves will become smarter and would be able to swim through a maze faster. He decides to perform an experiment by placing fish food in a microwave for 20 seconds. He has the fish swim through a maze and records the time it takes for each one to make it to the end. He feeds the special food to 10 fish and gives regular food to 10 others. He tries to make sure the fish eat the same amount of food no matter which kind of food they’re being fed. After 1 week, he has the fish swim through the maze again and records the times for each.

Reaction Timer Activity Get your condition, hypothesis and procedure checked before collecting data Turn in Lab Sheet when you are done.