category : Responsible waste management, recycling and environmentally friendly behaviour
If we spend a day without electricity in our home, we will probably find it difficult to perform daily activities such as: cooking, laundry, use of appliances such as iron, stove, TV, stereo, heaters, lighting. We will not be able to have a hot breakfast and we will not be able to take a shower with hot water.
Every child has the right to shelter, food and protection. Without electricity – to play on the computer, to eat hot food, to have lighting in the room.
Energy is something we can’t do without every day.
Energy is another word for power. Energy makes things move. It makes the machines work. Energy also makes living beings grow.
Energy exists in many different forms. Animals get energy from food. Electricity is connected to the small units called atoms that make up everything in the universe. Energy is created when particles called electrons move from one atom to another. Heat and light are also forms of energy. One form of energy can also be transferred to another. By accumulating in a battery, chemical energy is converted into electrical energy. In a light bulb, electrical energy is converted into light and heat.
Types of energy for different.
Each of the different forms of energy can be described as potential energy or kinetic energy. Potential energy is accumulated energy. For example, the chemical energy of food is stored energy. When people eat, their bodies convert accumulated energy into moving energy, such as heat or mechanical energy. Potential energy can also come from the position of an object.
Mechanical energy is potential energy plus kinetic energy. Machines use mechanical energy to do work.
Heat energy (heat energy)
Thermal energy is the total energy of motion of all molecules in a substance. All substances have heat energy, because the molecules that make up all substances are always moving.
Light energy is sometimes called radiant energy. This is the only type of radiant energy that can be seen with the naked eye. Some other examples of radiant energy are radio waves, microwaves, X-rays and gamma rays.
Sound energy is moving energy. It is obtained by moving back and forth on a vibrating object. This movement produces sound waves. Sound waves can only travel through a substance, such as air, water or solid objects. Sound moves slower than light.
Electricity is moving energy. It is a stream of small particles called electrons and protons. Electricity can be seen in nature as lightning. People have learned to produce and control electricity. Electricity is sent through wires or air to power such things as light bulbs, ovens and washing machines.
Chemical energy is accumulated energy (potential energy). The chemical energy in food is converted or changed by the body into moving mechanical energy and heat energy. The chemical energy in the battery can be converted into electricity to power a flashlight.
Nuclear energy is accumulated energy. Nuclear energy is also called atomic energy. The nucleus is the central part of the atom. Nuclear energy can be released by splitting an atom. It is used to supply cities with electricity. Unfortunately, it is also used to make nuclear weapons.
The sun is the source of almost all the energy on Earth. The sun makes plants grow. When animals eat plants, they get energy from the chemicals that make up plants. When plants die, they fall apart. For millions of years, this process has created so-called fossil fuels. Fossil fuels include oil, natural gas and coal. They are used to manage factories, heat homes and drive cars. Fossil fuels pollute the atmosphere when used. In addition, they are consumed very quickly. That’s why scientists have tried to find other sources of energy to replace fossil fuels. Some of these sources have been used directly for many years. These include wind, water and heat from Earth. Sailboats harness the force of the wind to move them. Water mills use water flowing through rivers to spin wheels that grind grain. In ancient times, some people used hot water and gases from the Earth to heat their homes.
Scientists have gradually learned to use these natural sources to create new forms of energy. These new forms include electricity and nuclear energy. For example, wind energy is now used to drive machines that generate electricity. People have built dams. Dams use the energy of flowing water to run machines that also create electricity. In sunny areas, the devices collect the Sun’s heat and store it. This heat can be used to heat water and houses. Other devices convert sunlight into electricity. This is known as solar energy. Scientists have also learned how to use certain atoms to make nuclear energy. It can also produce a large amount of electricity.