Which Way Is the Wind Blowing?

Which Way Is the Wind Blowing? Experiment #4 Children can use helium-filled balloons to observe wind direction. They use a magnetic compass to measure direction. A magnetic compass to measure direction. A magnetic compass measure the earth’s magnetic north, which is...

Measuring How Fast Helium-Filled Balloons Rise

Measuring How Fast Helium-Filled Balloons Rise Experiment #3 This activity is designed for the classroom. Helium-filled latex balloons should have lengths of light thread attached, long enough to reach from the floor to the ceiling. (Balloons can be filled with helium...

Experiment #2

Learning About Permeability Experiment #2 In this activity, the children investigate two properties of latex balloons — they stretch and they are “permeable,” that is gases such as air and helium can pass slowly through the latex membrane. Getting Started: You...