> Archive by category 'Spangler Videos'
November 1, 2011
We at Steve Spangler Science have demonstrated Exploding Pumpkins for over 15 years. This year, we tried small to large pumpkins to experiment with which one would produce the biggest bang and test our timing skills. With the help of the morning and afternoon 9News anchors, we carved a few jack-o-lanterns to celebrate Halloween. You decide – in which segment did we do our best carving work?
Editor’s Note : This experiment was presented for educational and demonstration purposes only. We DO NOT recommend trying this experiment in the classroom or at home unless you have had proper training. Do NOT do this at home.
September 27, 2011
Clay and Nick from Lenski Elementary joined me on 9News this week to test the honesty of 9News anchor Mark Koebrich.
Two clear liquids are mixed together and a question is asked. A truthful answer, and the liquid will remain clear. An untruthful answer will cause the liquid to change color. Mr. Koebrich told a lie, and BAM! the liquid turned to black ink.
This reaction is referred to as the Landolt Clock Reaction. There are three steps in the process that cause this amazing reaction. When you prepare the Solutions A, B, and C, the chemicals begin to mix and form new chemical compounds.
September 20, 2011
This demonstration involves fire and is intended for trained chemistry teachers. Do not do this at home.
Homer Hickam’s Rocket Boys is the story of kids in the 1950′s who were fascinated with rocket science. The characters use pipes filled with gun powder to experiment with rocketry. Teachers use the book as a literary connection with the science lesson about rockets. The key is in the nozzle. The book was later turned into the movie, October Sky.
Chemistry teachers can demonstrate rocket power by using ethanol. Ethanol fuel is becoming popular because it burns clean. When it completely burns, the byproduct is water. Carbon dioxide is
September 13, 2011
This demonstration is for educational purposes only. Do not try this at home.
Methane is one of only 13 gases that are lighter than air. Pump a little methane into soapy water, add a little fire and watch it do its dance.
With the help of a very nervous Kirk Montgomery, we demonstrated how methane bubbles grow in a tower that sways like a snake. Lighting the methane turns the tower into fire bubbles and demonstrates that methane is flammable. This demonstration is used to teach fire safety in firefighter training, because it shows the movement of flammable gases.
September 6, 2011
One glass mason jar filled with water and capped off with a simple index card put the fear of getting wet into 9News Weathercaster Becky Ditchfield. She was worried she’d get wet. The threat of moisture invading her hair style and outfit was low, but she didn’t know that.
Fill the jar to the top with water, then cover the opening with a card. Turn the jar upside down and remove the card. Place said jar over a lucky volunteer’s head and the water doesn’t spill out. How does this work?
The science lies in the screen that secretly covers the top of the jar.
As long as the jar wasn’t tipped, Becky had nothing to worry about. The water is suspended in the jar because of air pressure and surface tension. When the jar is turned over, air pressure