Turning on the switch in a flash light starts a chemical reaction in the batteries. The chemical energy is turned to light energy and the flashlight lights up. Which part of this an example of a process?
The example you described involves several processes. Let's break it down:
1. Turning on the switch: This is an example of a physical process as it involves the movement of the switch to complete a circuit and allow current to flow.
2. Chemical reaction in the batteries: This is an example of a chemical process. Inside the batteries, a chemical reaction occurs, converting the stored chemical energy into electrical energy.
3. Conversion of chemical energy to light energy: This is an example of an energy conversion process. The electrical energy produced by the batteries is used to power the light bulb in the flashlight, where it is converted into light energy.
4. Lighting up of the flashlight: This is the end result of the processes mentioned above. The light energy produced by the light bulb emits visible light, making the flashlight glow.
So, to summarize, the entire sequence of events involves physical, chemical, and energy conversion processes.