Third graders in Christy Moore’s classroom recently expanded their knowledge of weather patterns and how hot and cool air affect them. This particular experiment was just one part of their weather unit in 3rd grade science.
Students observed a black plastic bag rising as it absorbed heat. As a follow-up, students did the same experiment with clear and white trash bags. Students saw the black bag rise into the air while the clear and white bags remained grounded.
“Black is better at absorbing the energy from the sun. The white bag reflected much of the sun’s rays and did not heat up; and the clear bag was transparent, so the rays went right through the bag and did not heat up the air inside,” said Moore.
Moore also explained to students that after the air rises, it cools. This causes water vapor in the air to condense, creating clouds and precipitation.