Present the attached slideshow about the Scientific Method. Students will learn how to use the scientific method to set up an experiment. The search terms used were hand dryer and hand drying. In other words, what do you think? Students will identify qualitative versus quantitative observations.
Despite the low price, it performed very well in my absorbency test; at 40 milliliters, it absorbed almost as much water as the Viva brand although not as much as the Bounty. Have each student write a statement about each step, collect statements, see where students have misconceptions, and review.
The transmission of bacteria was more likely to occur from wet hands than from dry hands.
The paper towel fibers provide the small places for the columns of water to exist and for which to adhere. Once the towel was saturated, I removed it and squeezed the water into a beaker and measured it in milliliters.
Discuss the question and have students write a hypothesis. Briefly discuss any changes you would make in your design, if you had the chance to do the experiment again.
Transpiration is the driving force of water transport, creating negative pressure that keeps water moving from the soil into the roots and up through the stems into each leaf. If expensive brands are best, then Brand X will be the best water absorber. You could show the math ratio between Brand X and each paper towel it is being compared to.
After 60 seconds 1 minute pick up the paper towel using the tongs. Allow the students to use the scientific investigation procedure below or if they have alternative ideas on how to gather information allow that to design and carry out an investigation that determines which paper towel is the "Quicker Picker Upper" Problem: That being said, Kirkland Signature and Scott provided the best overall value.
Can you quantify your results? Items to think about: Specifically, the "wicking" process is defined in plant physiology as Cohesion-tension.
Now each student will need to complete these steps and actually do the experiment. Organize groups of appropriate size so everyone has a job to do. And using and reusing a dishrag is, according to food savant Alton Brown, a bacterial bacchanal.
I chose to color the water with red food coloring so that the water level would be easier to read.
Bean Plant Projects A simple way to make a science fair project with paper towels involves lining a foam cup with a wet paper towel and slipping a lima bean or other fast-growing seed between the towel and the cup. Viva was the most expensive brand surveyed. PowerPoint presentation see attachedcopy of Scientific Method for each student see attachedmaterials required for sample lesson:The use of paper towels may have adverse effects relating to waste disposal and environment sustainability.
skin color, or hand size On the basis of our review, drying hands thoroughly with single-use, disposable paper towels is the preferred method of hand drying in terms of hand hygiene.
This conclusion raises the question of what. The first step was to hop on down to my local grocery store where I bought six different brands of paper towels: Sparkle, Bounty, Bounty Basic, Scott, Shoppers Value, and Kleenex Viva.
I also went to my local Costco and bought their Kirkland Signature brand. Paper towels are made up of cellulose fibers, which also make up cotton, wood, and most other plants.
These cellulose fibers are actually giant molecules that consist of many small molecules. Objective: Apply scientific method to determine which paper towel can hold the most water.
Anchor(s) Addressed: S8.A Explain how certain questions can be answered through scientific inquiry. Objective: Apply scientific method to determine which paper towel can hold the most water. Anchor(s) Addressed: S8.A Explain how certain questions can be answered through scientific inquiry.
This group activity focuses on conducting an experiment to determine which of two brands of paper towels are more absorbent by measuring the amount of water absorbed. A two-sample t-test can be used to analyze the data, or simple graphics and descriptive statistics can .Download