Density of Hot & Cold Water

PIRA Class: 2B40.59

Purpose: 

Students will be able to explain, on the molecular level, how heating and cooling affect the density of water.

Description:
Place cold water (~22 C) in one beaker and warm water (~35 C) in one beaker. Placing the density ball in the cold water should cause it to float slightly and placing it in the warm water should cause it to sink.

Equipment:
Density ball, hot and cold water, 2 beakers, thermometer, kettle to heat water

Web Simulation:

http://physicsdemos.site.wesleyan.edu/home/fluidmechanics/2b/2b40-59-density-rod/ 

Location:
Shelf 262 (beaker), 247 (thermometer), 255 (kettle)