Summary Burn things by focusing the sun's energy with a magnifier. Science content Physics: Light and Sound (1) Physics: Energy forms, Conservation of Energy (1, 3, 4, 5) Materials safe outside space to burn stuff e.g. pavlng stones the sun magnifier paper, dry grass, other stuff to try igniting Procedure Focus the sun's energy on one point with a magnifier. Test different materials to see if they can ignite. Do not stare at the focused spot of light for long - it will hurt your eyes. (Dried grass ignites but printer paper does not.) The magnifier focuses the sun's energy to a point, which is hot enough to ignite things that are really thin and dry. Notes Try with sharpie and water lens: #2 in https://www.youtube.com/watch?v=HQx5Be9g16U start at 32 seconds. Grades taught Gr 3 Gr 5
