A) what is the difference between hearing the message through the "telephone" and through the air ?
b) according to the particulate nature of matter, molecules in air are much further apart than molecules in solids. use this model to explain why boy b head this difference
c) suggest some ways in which this experiment can be improve

Match each description with the correct form of energy. 1. energy of an object's position above the ground. 2. stored in the bonds of atoms and molecules 3. stored in the nucleus of an atom 4. energy of vibrating molecules 5. movement of objects used to do work 6. created by vibrations in electric and magnetic fields chemical energy mechanical energy heat gravitational energy light nuclear energy