What are some examples of heat energy?
The biggest example of heat energy in our solar system is the sun itself. The sun radiates heat to warm us up on the planet earth. When the burner of a stovetop is very hot, it is a source of heat energy. Conventional ovens are sources of convection heat energy, causing the food placed into it to become hot and cook.
Light energy is the only form of energy that we can actually see directly. It is formed through chemical, radiation, and mechanical means. Light energy can also be converted into other forms of energy.
- The kinetic energy of electrons flowing between atoms is electricity. Electromagnetic (EM) radiation is a form of energy that is all around us and takes many forms such as radio waves, microwaves, Infra Red waves, Light, Ultra Violet rays, X-rays and gamma rays. Light from the Sun is all around us.
- Light energy affects water temperature, biological processes (such as the relationship between predators and prey) and plant photosynthesis and growth. Under natural conditions light is controlled by topography, cloudiness, vegetation cover, and seasonal patterns, like less daylight in the winter.
- Old-style electric lamps work this way too. They make light by passing electricity through a very thin wire filament so it gets incredibly hot. Excited atoms inside the hot filament turn the electrical energy passing through them into light you can see by constantly giving off photons.
Objects have mechanical energy if they are in motion and/or if they are at some position relative to a zero potential energy position (for example, a brick held at a vertical position above the ground or zero height position). A moving car possesses mechanical energy due to its motion (kinetic energy).
- Here are some examples of electrical energy:
- Electrical charges moving through a wire or electricity.
- Static electricity.
- Batteries in use.
- Electricity stored in capacitors.
- Electric eels generate electrical energy.
- Audio speakers.
- Kinetic energy is the energy of motion, observable as the movement of an object, particle, or set of particles. Any object in motion is using kinetic energy: a person walking, a thrown baseball, a crumb falling from a table, and a charged particle in an electric field are all examples of kinetic energy at work.
- Thermal energy is an example of kinetic energy, as it is due to the motion of particles, with motion being the key. Thermal energy results in an object or a system having a temperature that can be measured. Thermal energy can be transferred from one object or system to another in the form of heat.
Gravitational energy is the potential energy held by an object because of its high position compared to a lower position. In other words, it is energy associated with gravity or gravitational force. For example, a pen being held above a table has a higher gravitational potential than a pen sitting on the table.
- Examples of Potential Energy
- A coiled spring.
- Wheels on roller skates before someone skates.
- An archer's bow with the string pulled back.
- A raised weight.
- Water that is behind a dam.
- A snow pack (potential avalanche)
- A quarterback's arm before throwing a pass.
- A stretched rubber band.
- Potential energy is energy stored in an object due to its position or arrangement. Kinetic energy is energy of an object due to its movement - its motion. All types of energy can be transformed into other types of energy. This is true for potential and kinetic energy as well.
- Gravitational potential energy is energy an object possesses because of its position in a gravitational field. The most common use of gravitational potential energy is for an object near the surface of the Earth where the gravitational acceleration can be assumed to be constant at about 9.8 m/s2.
Updated: 3rd October 2019