Final answer:
The correct matches for the energy forms are: falling rocks - mechanical energy, energy from the sun - nuclear energy, energy from food - chemical energy, nuclear fission reactors - electrical energy, and lightning - thermal energy.
Step-by-step explanation:
In order to match the energy forms to the descriptions provided, we need to understand the nature of each type of energy. Here are the correct matches:
- Falling Rocks from the top of a mountain - E. Mechanical
- Release of energy from the sun - B. Nuclear
- Energy released from food after it is eaten - C. Chemical
- Nuclear fission reactors - D. Electrical
- Lightening - A. Thermal
Falling rocks possess mechanical energy due to their motion and position. The sun releases nuclear energy through nuclear fusion, which then reaches Earth as radiant energy. The energy released from food is chemical energy that is stored in the chemical bonds of molecules. Nuclear fission reactors convert nuclear energy into electrical energy by using the heat generated from fission to produce steam that spins turbines connected to generators. Finally, lightning is a form of thermal and electrical energy, as the high temperatures are generated by the rapid movement of electrons between the cloud and the ground.