Students discover the concept of convection currents, by making observations on how temperature impacts fluids. This inquiry lab uses hot plates, beakers, thermometers, cold water, rulers, and centimeters. You may have to adjust the temperature of your hot plates based on the time that students need to finish this activity. Some classes had to turn their hot plates up higher to reduce the amount of time that was needed. You will definitely want to try it out with your equipment first. If you need to make adjustments for your equipment please contact me and I'll gladly do so.