WPK Science Fair news!!!!!

As promised, here's the update on Danny and Damien's investigation into temperature and mass, which they're studying for the 4th to 5th grade Science Fair at ASF Broad Street Elementary, on Broad Street.

Danny and Damien used a simple set-up involving water, a baby food jar, a straw, clay, food coloring, and a freezer. They had read enough to think that water would expand when it was frozen. When they did the experiment, they could clearly see it happen, because the food coloring made everything blue and easy to see. What they found out was that the molecules behave differently at different temperatures. Danny and Damien wrote that water molecules aren't like flat boxes, and that water molecules stack up more flexibly and use less space when the molecules are warm. Then, when the same molecules are frozen, they get stiff, or rigid. That means the molecules can't fold themselves into smaller spaces, so they end up taking up more room.

This is a true and excellent job of describing the situation by Danny and Damien.

Next up: what happens to plants when you put dish detergent in their water?