35 7.1 Forms of energy

Figures

Figure 7.1.1

The typical process of a coal power electrical station in a flow chart. From left to right: coal is fed from a large grey container called ‘coal supply’ onto a conveyor belt into a furnace where it’s burned. The heat from the furnace turns water into steam rising through boiler tubes. The steam then drives a turbine connected to a generator. After passing through the turbine, the steam is cooled back into water by a condenser. Electricity produced by the generator is carried away by ‘transmission lines’ leading to a utility pole.

Practice questions

Multiple choice questions

1. Which of the following describes the allowed actions of energy and matter under the Law of Conservation?
   1. Create
   2. Transform
   3. Reconfigure
   4. Destroy
   5. Transmute
2. A filament lightbulb is connected to a power source and activated. In what order does energy transform?
   1. Electrical Energy → Thermal Energy → Light Energy
   2. Light Energy → Thermal Energy → Electrical Energy
   3. Thermal Energy → Light Energy → Electrical Energy
3. In a combustion reaction, what type of energy is transformed into thermal energy?
   1. Light Energy
   2. Kinetic Energy
   3. Chemical Energy
   4. Nuclear Energy

Solutions

Multiple choice questions

1. b
2. a
3. c