Popcorn can pop up to 3 feet in the air. The following content is accessible for members only, please sign in.

True. As a popcorn kernel heats up, the moisture inside begins to expand. When the temperature inside the kernel reaches about 347° Fahrenheit, the pressure inside will reach 135 pounds per square inch, forcing the kernel to burst open. That pressure not only catapults the newly popped kernel into the air; it also increases to 40-50 times its original size. Enjoy some this Sunday, National Popcorn Day, with a glass of really good Chardonnay (which is great with popcorn).