Seasons and Flux

Try this

Use the Light Meter to model flux experienced at various points on the surface of the Earth. Prepare a globe with an equator, and hold at an angle with respect to a parallel sun or light source. Observe changes in the light intensity experienced by the smartphone, held tangent to the surface, in the north and south hemispheres.

Challenge yourself

• For an earth and the light source both in a plane parallel to the “ground,” plot the relationship between latitude and light intensity.
• Explain how this graph would look different if the globe was titled differently (i.e. if the equator was always parallel to the sun, or if the equator was vertical to the ground).