The following is a typical question asked at the end of physics units dealing with buoyancy: "A barge loaded with scrap iron is in a canal lock. The captain orders his crew to dump all of the scrap iron overboard. What happens to the water level in the lock?" I have asked this type of question to both high school and college physics students. Of course, answers are given which predict an increased, a decreased , or an unchanged water level.
Iowa Science Teachers Journal
© Copyright 1978 by the Iowa Academy of Science
"Float, Sink, Think!,"
Iowa Science Teachers Journal: Vol. 15
, Article 26.
Available at: https://scholarworks.uni.edu/istj/vol15/iss1/26