Presentation on theme: "Scientific Method to the Rescue"— Presentation transcript:
1Scientific Method to the Rescue Will the strongest towel please stand up!Template courtesy of science-class.net
2PurposeTo practice using the scientific method to design and conduct an experimentTo think like a scientist
3Problem/QuestionMany brands of paper towels claim to be the strongest.Which brand of paper towel is the strongest?
4_______In research laboratories, papermakers test the paper they make for physical properties such as :strength, absorbency, stretch, tear resistance, folding endurance, and stiffness.They also test for optical properties like:transparency, opacity, brightness, color, and gloss.
5ResearchSince paper towels are usually wet when they are being used, the “wet strength” of the towel is important.Wet strength is the strength of paper when wet.This can be measured by the amount of mass that a wet paper towel can hold.
6HypothesisIf different paper towels are tested for strength (__________, _______________, and ____________), then _____________ will be the strongest.
7Experiment Gather materials: 3 brands of paper towels Graduated cylinderbasinwashersWater (how much in mL)Balance scalescissors
8VariablesIndependent Variable: what you will change (the ‘if’ part of the hypothesis)Dependent Variable: what changes based upon the independent variable. (the ‘then’ part of the hypothesis).Constants: things that remain the same each time you perform the test.
9ProcedureStep by step process to followNumber the stepsUse complete sentences.Be specific!Indicate number of trials
12Analyze DataCreate a data table that includes the trials and the average of all trials (the reduced data).Create a graph, using of the average information (the reduced data).Remember to label X and Y axis and give a specific title that relates to the purpose of the lab
13Data Table # : Title Label Label: Brawny Bounty Scott Include a number Trial 1Trial 2Trial 3AverageBrawny#BountyScottAlways include an appropriate titleInclude labels for columns; include units!
14Use average, or reduced data GraphUse average, or reduced dataInclude a title and numberLabels should include units where needed
15Follow the directions to complete the conclusion template.