Inquiry Immersion - Newton's Third Law and the Doppler Effect

This term for Inquiry we are looking into changing behaviours using Fun Theory. To start us off we looked in things such as Vygotsky's Sociocultural Theory, Chemistry changes, and Physical changes such as Newton's Third Law and The Doppler Effect. 

Newton's Third Law

Newton's Third Law is: For every action there is an equal and opposite reaction.

We tested this by making balloon Rocket and Balloon Cars:

The Doppler Effect

The Doppler Effect is the apparent change in sound when the source of sound moves from a still observer. As the sound maker comes closer the sound will sound higher to the observer than when he is moving further away. As shown by Aaron below.