Types of Energy and Energy Transformation

Recap Energy is the ability of a system or object to change or do work. Work is done when a force is applied to an object and the object moves as a result of the force.

Types of Energy While there are many types of energy used to power the world, we are going to look at the 6 main types of energy. Types of Energy Thermal Mechanical Electrical Light Sound Chemical

Thermal (Heat) Energy Energy that is associated with the random motion and arrangement of the particles of a material. The more the particles are moving, the higher the thermal energy. Examples: radiation, stoves, matches

Mechanical Energy Is the energy due to the position of something or the movement It can be in the form of potential energy, kinetic energy or a sum of the two put together. Examples: walking, running, moving vehicles, moving turbines etc.

Electrical Energy Is associated with current and voltage. Examples: Plugging into an outlet, power plants, anything that uses electricity involves electrical energy.

Light Energy Is energy associated with the electromagnetic waves. Largest source is the sun Examples: Plants use it to make food and scientists use it to create lasers

Sound Energy Energy that is associated with longitudinal mechanical waves. Travels from the source in the form of waves. Examples: Radio, sirens, alarm clock, ipod, etc.

Chemical Energy Energy associated with atoms, ions, and molecules and the bonds that they form. Chemical energy will change into another type of energy when a chemical reaction occurs. Examples: Breathing, photosynthesis, digestion etc

Energy Transformation when a battery is connected to a light bulb Chemical energy changes to electrical energy. The electrical energy flows through the light bulb and turns electrical energy to light and thermal energy. The total of the energy from the chemical reaction in the battery is equal to the total energy that it transforms into.

Energy Transformation when throwing a football A football player converts chemical energy from the food he/she has eaten to mechanical energy when he/she moves his/her arm to throw the ball. The work done on the ball converts the energy of the arm movement to kinetic mechanical energy of the moving ball. As the ball moves through the air, it has both kinetic and potential mechanical energy.

When a second player catches the ball, the ball does work on the player’s hand giving them some mechanical energy. The ball also moves the molecules in their hand moving them faster and thus heating their hand. The player that catches the ball absorbs the energy of the ball, and this energy turns to heat. The total heat produced is equal to the energy used to throw the ball.

Max SOUND energy