water gets sucked into a flask

Example of a text (an activity recommended for science teaching) that can encourage an alternative conception:

"Burn a piece of dry phosphorus in a confined volume of air, i.e., in a stout Florence flask closed by a cautchouc stopper. Afterwards withdraw the stopper under water, again insert it when water ceases to enter and measure the amount of water sucked in."

Armstrong, H. E. (1884) in H. E. Armstrong and the teaching of science 1880-1930 (Ed.: W H Brock, 1973), Cambridge University Press

Read about the nature of alternative conceptions

Read about some examples of science misconceptions

Read about historical scientific conceptions

Read about sucking

Author: Keith

Former school and college science teacher, teacher educator, research supervisor, and research methods lecturer. Emeritus Professor of Science Education at the University of Cambridge.