Cold water is denser than warm water. Heat transfer and sources. This complete lesson plan is ready for you to print and teach! Simply add a few peas or bits of paper to trace the current flow. Hot air is less dense than cool air and will rise leaving the cooler air below. As water cools the molecules become packed together more tightly which results in more mass per volume. Materials for this convection current demonstration Red and blue food coloring Ice cube tray Bottle for the hot water Fish tank or any large clear container Why do convection currents occur?

As water cools the molecules become packed together more tightly which results in more mass per volume. You can observe convection currents in water boiling in a pot.

The Sun. Materials for this convection current demonstration Red and blue food coloring Ice cube tray Bottle for the hot water Fish tank or any large clear container Why do convection currents occur? Cold water is denser than warm water. The energy from the lamp's light source warms up the air above it. This is due to a convection current. The heat source at the bottom of the pan heats the water, giving it more energy and causing the molecules to move faster. Convection currents are the movement of fluid as a result of differential heating or convection.

A set of instructions to set up a demonstration for convection.

Heat convection demonstration. This is one activity from the Convection Currents station lab. Chemistry: Atoms, Molecules (3-7) Physics: Heat (3) Lessons activity is in.

Because hot air is lighter than cool air, as the air heats up and the hot air rises above the lamp, colder air moves where the warmer air was previously. Observe a beautiful demonstration of heat convection.

As the warm air rises, a pattern of air movement is formed called a convection current. Science content.

It has two cups (full of ice water and boiling water, indicated with blue and red food colouring) and when you pierce holes in the cups, when submersed in room temp water, watch the movement of convection. Can also be used to demonstrate the convection currents in the Sun. Convection currents can be found in the boiling of liquid, the heat of a campfire, the weather, and even the magma in the earth.

We can see these convection … Students will be able to recognize that the Sun provides energy which drives convection within the atmosphere and oceans, producing winds and ocean currents. This difference in temperature around the match is caused by effect of heat on the density of air.

Summary. In the case of the Earth, convection currents refer to the motion of molten rock in the mantle as radioactive decay heats up magma, causing it to rise and driving the global-scale flow of magma.