Worked ExamplePresent a scenario. You've noticed that some brands of paper towels seem to be more absorbentthan others. You wonder, "Do different brands of paper towels absorb the same amount ofwater?"Hypothesis:Independent Variable:Dependent Variable:Controlled Variables:Method:Step 1:Step 2:Step 3:
Answer (1)
Worked Example: Paper Towel Absorption Scenario: You've noticed that some brands of paper towels seem to be more absorbent than others. You wonder, "Do different brands of paper towels absorb the same amount of water?" Hypothesis: Different brands of paper towels will absorb different amounts of water. Independent Variable: Brand of paper towel Dependent Variable: Amount of water absorbed (measured in milliliters or grams) Controlled Variables: - Size of paper towel: Use the same size sheet for each brand.- Amount of water: Use the same volume of water for each test.- Time of absorption: Allow each paper towel to absorb water for the same amount of time.- Temperature of water: Use water at the same temperature for each test. Method: Step 1: Gather materials:* Different brands of paper towels (at least 3)* Measuring cups or graduated cylinders* Container (e.g., bowl, beaker)* Timer* Scale (optional, for measuring the weight of absorbed water) Step 2: Prepare the experiment:* Cut out identical squares of paper towel from each brand.* Measure and pour the same amount of water into the container. Step 3: Conduct the experiment:* Place one paper towel square into the container of water.* Start the timer.* Allow the paper towel to absorb water for a set amount of time (e.g., 1 minute).* Carefully remove the paper towel from the water.* If using a scale, weigh the paper towel to determine the amount of water absorbed.* Repeat steps 3-6 for each brand of paper towel. Step 4: Analyze the results:* Compare the amount of water absorbed by each brand of paper towel.* Determine if there is a significant difference in absorption between the brands. Note: This is a basic experimental design. You can refine it further by increasing the number of trials for each brand, using different types of paper towels (e.g., single-ply, multi-ply), or exploring other factors that might influence absorption.
