Review over your notes for the test Review over your notes for the test! You will need a sharpened #2 pencil Use the SIDE #1 of the scan tron. SUBJECT: ATOMS DATE: 9/23/15

What should I know for the Scientific Method Test? Key Terms Independent Variable Dependent Variable Controlled Variable (Constant) Controlled Experiment Experimental Group Control Group   Be able to identify a Testable Question. Be able arrange the steps of the Scientific method in order. Identify 4 ways to test a hypothesis. Know how to write a hypothesis using If, Then, Because. Be able to identify the independent, dependent, and controlled variables

Notebook Title: Test Review Bell Ringer SpongeBob Clean Pants SpongeBob noticed that his favorite pants were not as clean as they used to be. His friend Sandy told him that he should try using Clean-O detergent, a new laundry soap she found at Sail-Mart. SpongeBob made sure to wash one pair of pants in plain water and another pair in water with the Clean-O detergent. After washing both pairs of pants a total of three times, the pants washed in the Clean-O detergent did not appear to be any cleaner than the pants washed in plain water. 1. What was the problem SpongeBob wanted to investigate? 2. What is the independent variable? 3. What is the dependent variable? 4. What should Sponge Bob’s conclusion be?

Scenario 1 Floor Wax A shopping mall wanted to determine whether the more expensive “Tough Stuff” floor wax was better then the cheaper “Steel Seal” floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After 3 weeks, the number of scratches in each of the test sections was counted. Testable Question Hypothesis Independent Variable Dependent Variable Controlled Variable Is this a Controlled Experiment? Explain.

Scenario 1 Floor Wax A shopping mall wanted to determine whether the more expensive “Tough Stuff” floor wax was better then the cheaper “Steel Seal” floor wax at protecting its floor tiles against scratches. One liter of each brand of floor wax was applied to each of 5 test sections of the main hall of the mall. The test sections were all the same size and were covered with the same kind of tiles. Five (5) other test sections received no wax. After 3 weeks, the number of scratches in each of the test sections was counted. Testable Question – How does the type of floor wax affect the protection of the floor from the number of scratches? Hypothesis – If I use Steel Seal wax Then the floor will have more scratches because it is a less expensive brand. Independent Variable – Type of Wax Dependent Variable – Number of scratches Controlled Variable – number of tiles, amount of wax Is this a Controlled Experiment? Explain. Yes because there is an Experimental Group and a Control Group

Match the following key terms to the correct meaning. Part of experiment not exposed to independent variable and used for comparison. Things in the experiment that the scientist holds constant (keeps from changing). The variable the scientist changes in an experiment. Used to study how the independent variable changes the dependent variable. The variable being measured. Independent Variable Dependent Variable Controlled variable Experimental group Control group

Match the following key terms to the correct meaning. Part of experiment not exposed to independent variable and used for comparison. Things in the experiment that the scientist holds constant (keeps from changing). The variable the scientist changes in an experiment. Used to study how the independent variable changes the dependent variable. The variable being measured. Independent Variable C Dependent Variable E Controlled variable B Experimental group D Control group A

Logic If person A is taller than person B and Person B is taller than Person C, then Person A is __________ than Person C.

Notebook Title: Sci Method Practice Bellringer: Complete the following. Jennie and Kyle wondered when the most students missed school during the school year because of illness. Their hypothesis was that the most students miss school because of illness in September, because students have recently returned to school and bring illnesses that spread from person to person. They looked up the school records for the past ten years and found that the greatest number of students missed school due to illness in the month of February. 1. In your own words, describe Jennie and Kyle’s original hypothesis. 2. Record their revised hypothesis after examining school records.

Can a scientist’s hypothesis about the Iceman’s travels ever be proved?

What was the first sign to scientists that the iceman was probably not the lost music professor? You can use your text if needed.

Identify the following: Independent Variable Dependent Variable Susan observed that different kinds and amounts of fossils were present in a cliff behind her house. She wondered if changes in fossil content occurred from the top to the bottom of the bank. She marked the bank at five positions: 5, 10, 15, 20, 25 m from the surface. She removed 1 bucket of soil from each of the positions and determined the kind and number of fossils in each sample. Identify the following: Independent Variable Dependent Variable

Scientific Method

Hypothesis Write an If, Then, Because statement for the following testable question: How does the amount of leaves on a tree affect how many birds will build nests in it? Hypothesis: If ____________________________________________________, then ____________________________________________________________ because __________________________________________________________. How does the acid level of a lake affect how many fish live there?

TESTABLE QUESTION CHECK UP 1. ____ Does milk chocolate taste better than dark chocolate? 2. ____ Can 100 ml of water hold 150 ml of sugar? 3. ____ Does Pizza Hut or Dominos make the best pizza crust? 4. ____ Which pill design – capsule or tablet – will dissolve faster? 5. ____ Does the color of the horse effect how fast they run? 6. ____ Do the colors blue and yellow look good together?

Gloria wanted to find out if the color of food would affect whether kindergarten children would select it for lunch. She put food coloring into 5 identical bowls of mashed potatoes. The colors were plain, red, green, yellow, and blue. Each child chose a scoop of potatoes of the color of their choice. Gloria did this experiment using 100 students. She recorded the number of students that chose each color.   Testable Question? Hypothesis? Independent variable? Dependent variable? Control?

Mythbusters Scientific Method!

MythBusters Scientific Method   Identify the parts of the scientific method for each of the MythBusters experiments. 1. Video Experiment Title: _______________ 2. Problem/ Question 3. Hypothesis 4. Independent Variable 5. Dependent Variable 6. 2 Controlled variables or constants that are kept the same. 7. Identify the experimental control 8. How did they measure the data? 9. What was the conclusion?

Scientific Method Sequence Work with your partner to sequence the following steps into the correct order: a. Analyze Results b. Hypothesis and Predict c. Test Hypothesis d. Observation/Ask questions e. Communicate Results f. Draw Conclusions g. Further Scientific Inquiry

On pages NOS 6 and 7 d. Observation/Ask questions b. Hypothesis and Predict c. Test Hypothesis a. Analyze Results f. Draw Conclusions e. Communicate Results g. Further Scientific Inquiry

Notebook Title: Sci Method Check-in Bellringer For my experiment, I am testing to see how changing A effects B. I have to keep C the same so that I have a valid experiment. Which is which? Controlled Variable: Independent Variable: Dependent Variable: