What you will need:
- 3 cups of yellow popcorn kernels
- Hot air popper
- Large bowl
- 2 quart measuring cup
- 2 glass jars with lids
- 3 large paper grocery bags
- Paper towels
Here’s what you do:
- Draw out a data chart to record final results. Your control variables will be your Sample A, Sample B, Sample C. Your results will include Volume, Number of unpopped kernels, and Kernel size.
- Divide the popcorn into three 1-cup samples, by putting one cup into each of the two glass jars and labeling the jars A and B. Measure one cup onto paper towel and label the towel C.
- Close the lid tightly on jar A.
- Add 1/8 cup of water to jar B, and close lid tightly.
- Spread sample C kernels around evenly on the paper towel.
- Leave all samples in a cool; dry place for 7 days – turning the glass jars over once a day. Record any visible changes in the kernels inside the jars and on the towel.
- After 7 days, begin experiment.
- Preheat air popper one minute before adding corn.
- Pour 1/2 cup of sample A into popper and begin popping. Catch popcorn in large bowl.
- Measure the size of one popped kernel, in inches, and record using the Following scale:Large = more than 3/4″
Medium = 1/2″ to 3/4″
Small = less than 1/2″
- Measure all the resulting popped corn into one grocery bag (label bag A) Repeat this with 1/2 cup of sample A kernels. Record results on data Chart.
- Repeat steps 9 through 11 with sample B and sample C.
Now What Do We Know?
- Is there a difference in look and texture between popped samples?
- Which sample popped the lowest volume?
- Which sample popped the highest volume?
- How does moisture level of unpopped kernels affect popping volume and texture of popped corn?