4- What are energy? write two natural
source ot energy
Answers
Answer:
Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another.
Explanation:
- Solar energy from the sun.
- Geothermal energy from heat inside the earth.
Answer:
The classical description of energy is the ability of a system to perform work, but because energy exists in so many forms, it is hard to find one comprehensive definition. In short, energy is the ability of a system to make things happen. It is a property of an object which can be transferred from the object to an object or converted to different forms but cannot be created or destroyed. There are numerous sources of energy. It can be chemical energy, electrical energy, heat/ thermal energy, mechanical energy, nuclear energy, and energy in the form of electromagnetic radiation i.e. light.
Sources of energy contain energy in them if forms that cannot be used directly but living organisms require energy to stay alive. Therefore, you must unlock this energy to get work done. Humans get energy from food which has this energy stored in the form of chemical energy. Your body absorbs this energy from food and burns it to fuel your body so that you can run around and have fun. A candle has a lot of chemical energy, but it has to burn for it be useful. This conversion of chemical energy to yield heat and light energy is burning. Burning is a process of converting chemical energy to heat energy and sometimes light too.
Hope this helps you.