PBS
Pbs Teachers:dimming the Sun
Conduct an experiment and investigate how air temperature, relative humidity, wind speed, solar radiation and precipitation affect evaporation. Graph the data collected during the experiment.
Science Buddies
Science Buddies: Build a Rubber Band Paddle Boat
Build your own bathtub or pool toy from simple craft materials in this fun activity. You will build a rubber-band-powered boat that can zip across the surface of the water after you wind up the rubber band.