If there are air leaks in a house, you might expect that their effect would be magnified on a windy day. The wind creates greater air pressure on the windward…
Convection refers to transfer of heat by a fluid material (such as air or water) moving from one place to another. The convection is forced if the fluid motion is…
Conduction of heat refers to the transfer of heat through a solid. Convection refers to the transfer of heat by a fluid material (such as air or water) moving from…
The convection of heat in air happens naturally because warmer air is less dense and rises, causing air circulation in many situations. But not always! Air can stratify, with warmer…
Air circulates quickly and easily if there are temperature differences to drive its motion. This may be desirable in a room, but in insulated walls and ceilings air circulation is…
Most buildings have leaky places where air can enter or escape — around windows, ceiling openings like pipes, wires or chimneys, and construction joints such as where the wall meets…
Experiment with a simulated Crookes tube for qualitative results similar to Thomson’s experiments in which the electron was discovered….
Explore the energy exchange between colliding objects and observe how energy transfer occurs under various circumstances….
Explore the effect of an electric field on the electron distribution of an atom.
Explore the role of pore size in the diffusion of a substance across a membrane. Diffusion is the process of a substance spreading out from its origin. Molecules diffuse through…