The ability of a body to perform work is defined as energy. So, in order to conduct any type of work, we require energy. It is a fact that, all living things require energy in order to survive. The food we consume provides the majority of the energy we require to live and work. We do, however, require energy to light our homes, prepare food, drive cars, power our televisions and computers, and operate factories. In truth, we require energy to complete all of our tasks. What is the source of this energy? Let's see what happens.

Sources of Energy 

We get our energy from a variety of places. Let's take a look at a couple of them.

The Sun is the Earth's primary source of energy. Solar energy is the energy that the Sun emits. Green plants use the Sun's energy to help them create their food. Can you recall the name of this procedure? Right, so this process is called Photosynthesis.

With the use of solar panels, solar energy is also used to generate electricity

Wind: A windmill generates energy or draws water from the ground by harnessing the force of moving air (wind). Wind energy is the name given to this type of energy.

Water: Dams use the power of fast-flowing water to generate electricity. Water is used to generate energy, which is referred to as "hydroelectricity." A wide range of equipment is powered by this electricity.

Fuels: They are organic compounds. They contain a significant amount of chemical energy. When we burn them, this energy is released. Fuels such as coal, petrol, cooking gas, oil, and wood are only a few examples. 

Atom: It is the tiniest unit of matter. The energy released when atoms are ripped apart is known as atomic energy. It is employed in the generation of power. There is no way to generate or destroy energy. It does, however, alter from one form to the next.

Forms of Energy 

Mechanical energy, chemical energy, heat energy, electrical energy, magnetic energy, and sound energy are all examples of diverse types of energy. The following are some energy conversions. 

• When you switch on a tube light or a CFL, it turns electrical energy into light energy.

• When we light a candle, the chemical energy of the wax is converted into heat and light energy

In reality, the plants that surround us collect solar energy and turn it into chemical energy, which is then stored as food.

NGSS

4-ESS3-1

4-PS3-1

4-PS3-2

4-PS3-3

4-PS3-4

PS3.A:  

PS3.B:  

PS3.C:  

PS3.D:  

ESS3.A: 

ETS1.A:  

Common Core State Standards Connections

• RI.4.1 

• RI.4.3

• RI.4.9 

• W.4.2  

• W.4.7 

• W.4.8 

• W.4.9 

Mathematics

• 4.OA.A.1 - 

• 4.OA.A.3 

• MP.2 

• MP.4