Turn on the lamp. Allow students to hold their hands close to the bulb. Record their observations in their journals. Students hold their hands farther away and record their observations. Record their predictions.
Students take turns clapping erasers over the light.
Students observe, describe and record the way the rising warm air near the light bulb carries the dust upward. Review that when hot air and cold air meet, the cold air moves in under the hot air, pushing up even further. This air movement creates wind. Fill one bottle with hot water b. Find South Dakota.