Lola had found that the aluminum foil under the cardboard sled did not help the sled to go. Now she will demonstrate this finding. But the aluminum foil now helps the sled go! Lola has an explanation: it is the bumps in the crinkly aluminum foil.
- What do you think of Lola’s explanation?
- Do an experiment to see if crinkly aluminum foil slides better than smooth aluminum foli.
- Can you think of another explanation for Lola’s results?
Look closely at what Lola does to the slope.
- Could raising the end of the cardboard slope make a difference in how something slides down the slope?