A fun activity the children watched and replicated themselves was to investigate gravity's affect on a tin foil rock and a real rock of similar size but different weight dropped from the same height. We talked about how gravity is always here how it is a force between objects. I explained as far as I knew it was still somewhat a mystery. There were many theories and I told them a bit about Issac Newton's theory that is a force. Remember that apple tree?
I posed the question that Galileo wondered about (FYI he dropped 2 cannon balls from the Leaning Tower of Pisa in the late 1500's.)
When a tin foil ball and rock are dropped from the same height which one will hit the earth first? Why?
We voted and the rock won because it was heavier. It would hit the earth first. Then I performed the experiment a few times for them to replicate in small groups.
Answer & what we replicated, Galileo discovered that gravity accelerates all objects at the same rate. We talked briefly if this would hold true for a feather and a rock. I asked them to go home and try.
The children then completed a simple science notebook page on this observation.