Light moves in straight lines until acted upon by another object. Light moves so fast, sometimes our eyes can only see light move when a change in observed.
Refraction is the bending of light rays. Utilizing clear plastic vials or tubes with lids can help students explain why it appears that straight object bend when placed half in water.
An indicator is a substance that can be used to determine pH of a substance. Make your own indicator using red cabbage leaves and test household items.
Chalk is used in many applications and industries... more familiarly in the classroom. Make your own chalk and learn the science behind this incredible product.
