1. Mechanical energy – a moving Experiment You need energy to do the things that you do every day!

2. Lab – Mechanical energy Procedure: 1. If you are sitting, stand up! Do you think standing up took a little energy? Try jumping up and down now for 5 times. – In order for you to stand up or jump, your body changes the chemical potential energy found in food you have eaten into mechanical energy of moving muscles.

3. Lab - continued 2. If you jump up and down a lot (maybe 50 or times) you might feel warm or hot. Where do you think that heat comes from? – When your body changes chemical energy into mechanical energy it does not do it perfectly so some of the energy gets changed into thermal energy.

4. Lab - continued 3. What if your body changes the chemical energy into mechanical energy by rubbing your hands together? What type of energy does the mechanical energy from your moving hands get changed into?

5. Lab continued 4. You can change the mechanical energy into sound energy better by clapping your hands……