Due Monday, October 29th - Hypothesis, variables/control, procedures and materials

SAMPLE Paper Towel Project

Hypothesis, Variables, Procedures and Materials

Due MONDAY

Hypothesis - If I test 3 different brands of paper towel (Bounty, Brawny and Viva), then the Viva paper towel will be the most absorbent.

Independent variable – The independent variable is the brand of paper towel used in the experiment.

Dependent variable – The dependent variable is the amount of water the paper towel holds.

Constant Variable – The constant in the experiment are the containers used, the amount of water from the eyedropper, and the number of paper towel sheets.

Materials

1 roll Bounty paper towel

1 roll Brawny paper towel

1 roll Viva paper towel

water

eyedropper

pennies

containers

rubber bands

Procedures

Drop Test

1.             Place towel A over the container and wrap tight with a rubber band.

2.             Fill the eyedropper with water.

3.             Place the bottom of the eyedropper directly over the paper towel and drop one drop at a time keeping   count.

4.             Stop as soon as you see water leaking into container.

5.             Record the number of drops in the data table. Repeat steps 1-5 for 2 more trials.

6.             Repeat steps 1 – 5 for paper towels B through E.

7.             Rank the paper towels from the one that absorbed the most drops (#1), to the one that absorbed the least drops (#5)