Name: ______________________ Class: _________ Science- 0.2 Scientific method part II Date: _________ Aim: SWBAT identify all seven steps of the scientific method Do Now: Let’s recap…. What are the first three steps of the scientific method? 1. 2. 3. Class Notes The Steps of the Scientific Method (4-‐7) Step #4: Write your _____________________________. Write the steps for how you will test your hypothesis. § List the _______________________ you will need, including exact amounts of each item. § List each thing you will do. Number each step in order. Write down everything you will do. § Your procedure must be so detailed that another scientist could __________________________. Step #5: Test your _________________________. § Get your materials, follow your ___________________, and make observations. § While taking data, you should record _____________________ and ___________________ observations. Step #6: Organize your ___________________. § Record as much data as possible. § Use your data to make ________________, charts, or __________________. Step #7: State your _________________________. What happened? Was it what you expected? Why or why not? § In the conclusion, scientists answer the ___________________ that the experiment asked. § Look at your ______________ and decide what it tells you about your hypothesis. Summarize your data. § List any limitations your experiment might have. § ____________________ your results with others. Practice: Directions: Read the experimental design below and identify the parts of the scientific method by answering the questions that follow. A student wants to find out if temperature affects the activity level of goldfish. He asked the owner of the local Petsmart what temperature range the goldfish could live in and he learned that goldfish can’t survive at temperatures above 95 degrees Fahrenheit or below 30 degrees Fahrenheit. He thinks that the fish will get more active the cooler the water is. He has four fish bowls and 20 goldfish that he sets up as illustrated below. After observing the goldfish three times each day for one week he determines that the goldfish have the same activity level at all of the temperatures he tested. He concluded that his hypothesis was not correct and that cooler water does not make fish more active. was the problem or purpose of the experiment? 1. What there any research that the student did before beginning? If so, what was it? 2. Was What was the student’s hypothesis? 3. Directioscientific method to analyze the video. 4. How did the student test the hypothesis (what was the experiment)? 5. What were the results of the experiment? 6. Was the hypothesis correct or incorrect? Guided Practice – We Do Independent Practice-‐ The popcorn experiment Directions: These steps are out of order. Read each step, then write the correct method step in the column on the left Scientific Method Steps Popcorn Experiment Steps If I test four brands of microwavable popcorn to see which leaves the least unpopped kernels, then I think Orville Redenbacher’s will win because it is the most expensive. Microwavable popcorn ranges from $2.89-‐$4.19 A popcorn kernel is made up of a hard outer coat and a soft starch (a carbohydrate) inside • Starch contains water, and when the when the water heats up it causes the kernel to explode Materials: 1 bag each of Orville Redenbacher, Pop Secret, Newman’s Own, and Stop and Shop microwavable popcorn; 1 microwave • • Procedures 1. Pop one bag of popcorn according to the directions. 2. Count how many kernels did not pop, and record this #. 3. Repeat Steps 1-‐2 for each brand of popcorn. Which brand of microwave popcorn leaves the least unpopped kernels? Orville Redenbacher’s: 13 unpopped kernels Stop and Shop: 28 unpopped kernels Pop Secret: 23 unpopped kernels Newman’s Own: 20 unpopped kernels
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