thermal energy

401

I got this photo during our visit to White Sands, and used the sound of the thunder with the Flash/Bang method to determine that the bolt was about two miles away. How does lightning produce thunder?

432

I took this shot at Rattlesnake Springs in New Mexico. Although it was nearly 10:00 AM on this cloudy day, hundreds of vultures where still roosting in the trees. What were they waiting for?

Color of a Flame

Have you ever wondered why a candle flame is yellow? And if you look carefully, you will see that the very bottom of the flame is blue! Why would that part of the flame be a different color? The best way to find out is to do some careful experimentation.

Hot Air Bottle

This experiment is a simple one that I came across while washing dishes. Even thought it was an accidental thing, it really is a great way to show how much air expands when it gets hot. To try it, you will need:

A Hot Change

We have taken a brief look at an endothermic process, seeing that dissolving epsom salts in water lowered the temperature of the water. This week, we will examine a process that is exothermic, which means that it gives off heat. To try this, you will need:

How Heat Moves

This experiment comes from sitting in front of a wonderful fireplace. As someone that has never been a big fan of winter, it is great to have a toasty fire to keep warm at night. Watching the fireplace lead to thinking about heat and how it moves.

Pages