- Cape student sues, accuses school officials of slamming her to ground multiple times (04/28/16)45
- Bob Evans restaurant in Cape Girardeau among chain's 21 closings (04/26/16)9
- Missouri House votes to allow concealed weapons without permits (04/28/16)6
- Two hurt in motorcycle wreck on Interstate 55 (04/25/16)1
- Law firm requests information about Cape's traffic cameras (04/25/16)2
- Local lawmakers split over failed medical marijuana bill; voters may have a say (04/26/16)19
- Police report filed, but no charges in incident at Cape Central (04/29/16)36
- Tanker truck catches fire near Oak Ridge (04/24/16)7
- Local company makes eco-friendly kitty litter that cuts cat-box smell (04/25/16)
- Senator introduces bill for I-57 that would connect Sikeston with Little Rock (04/28/16)4
Hooked on Science: Warm and cool balloon
Most of us have inflated a balloon, but have you ever noticed the difference in temperature between an inflated balloon and a deflated balloon?
STEP 1: Inflate the balloon and then quickly feel the outside of the balloon.
STEP 2: Deflate the balloon and then quickly feel the outside of the balloon.
The inflated balloon feels warm, while the deflated balloon feels cool. The temperature drops as the air is released through the small opening of the balloon. Energy is used to force the air through the small opening. The removal of this energy results in a drop in temperature.
Jason Lindsey is a science outreach educator with Hooked on Science. Check out his website www.hookedonscience.org for webcasts and experiments that might get you hooked on science. Send him your science questions at jlindseyhookedonscience.com. More science experiments can be found at www.semissourian.com.