Monday, March 29, 2010

home science experiment

A science experiment idea from Neil Dabb, one of the other people working on the StarHouse Discovery Center.

SCIENCE!!: While I was doing some research on air I came across several references to a myth that hot water will freeze faster than cold. Some referred to this as the Mpemba effect and that it stemmed from a young boy in Africa (named Mpemba) who did some experiments to prove this. Many “scientists” tried to duplicate the findings. While many of them were unable to duplicate this experiment, others have determined that there may be some validity depending on what is in the water (for example, we know that salt water freezes at a much lower temperature than fresh water), atmospheric and other conditions. Something as simple as the shape of the container may affect how fast the water freezes.

While the science behind this phenomenon is complex, the experiments themselves can easily be done by the youngest of students. And this can be a great introduction to the scientific method, and making sure there is only one difference between the various test samples. The water in one country obviously will have different impurities than the water in another country. The barometric pressure changes from day to day. All of these things will need to be taken into account, but this effect happens sometimes and we still aren’t sure why. Perhaps some of your classes would like to see if they can figure it out.

Give it a try, see what you come up with

Saturday, March 6, 2010

Friday Surprise

This week I was substituting for James at Thomas Edison Charter School, while he was in D.C. After school, I met with Neil, Arno, & Levi Arno had the surprise. Before Jr Engineering shut down, he had contacted Energy Solutions about possible funding. A couple of weeks ago, he contacted them again, to let them know that Jr Engineering had been shut down, and that we are working to continue the mission of bringing hands-on science education to elementary schools in the intermountain west. The main thing he wanted was to let them know how to contact us. They sent us $1,000!

Thank you, Energy Solutions!

We took a picture of the four of us with the check, which will be posted on our website as soon as I get the file from Arno.

My current task is to track down the rumor that as part of the International Year of Astronomy, each state would be able to get a StarLab portable planetarium. No one knows where the one for Utah is. We think it should have gone to Weber State University, but Stacy Pallin, the astronomy professor there, hasn't heard anything about it. So now I need to try and track down where the ones for Arizona, Idaho, Nevada, & Wyoming were supposed to go. Since we are planning on serving students in all five states, we might as well try to get resources from all five as well.