California Academy of Science
Your Hidden Water Footprint: Defining a Problem to Find a Solution
One 17-ounce bottle of Cola requires around 46 gallons of water to produce. How is that possible? Young scientists learn about the hidden water used to produce everyday items. They research, discuss, and look for ways to reduce water...
American Chemical Society
Temperature Affects Dissolving
Stir chocolate drink mix into hot and cold water to see if there is a difference in how quickly it dissolves. Number three in a six-lesson unit on dissolving, this installment investigates the effect of temperature. If you consult the...
US Department of Agriculture
Sink or Float?
Will it sink or will it float? Learners predict the outcome as they drop random objects into a container of water. Then, they keep track of the results and record the data in a t-chart to draw a final conclusion.