Here is a way to show that hot and cold molecules move at different speeds. A hot-and-cold contest Materials - bowls (2, large) - food coloring - medicine dropper - pan (bigger than bowl) -...
Happy New Year!
The first day of the year is both a holiday and a holy day. It is also a time to look back and a time to look ahead. It is a time to make a new beginning. So, many people make New Year's resolutions....