Physical systems include robotics, motors and sensors. Many examples are shown, including street lights coming on at night, remote controls, traffic lights, security systems, air conditioning systems and automatic doors. Reasons why we use physical systems are explained. They enable us to explore places that humans can’t work and simulate environments are not safe for us. Machines can often work more quickly and for longer periods of time. A flight simulator is given as an example of a physical system which helps someone learn to fly and experience different situations without the risk of crashing.
After watching the clip, children could have a competition to think of the most physical systems. They could sort them into motors, robotics and sensors.