Light
The potential for light to perform work is called light energy. 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.
Some facts about light energy:
- Light travels at a speed of about 300,000 km/s
- The sunlight that we see here on Earth left the sun 10 minutes before
- The speed of light changes when traveling through different objects.
- Light is a type of electromagnetic energy
- Space is dark because light is ony visible when it has an object of which to bounce off.
Gravitational energy
Gravitational energy is another type of potential energy. Gravitational energy is only stored in the height of the object. Any time that a heavy object is kept high up, a force or power is likely to be holding it up there. This is the reason why it stays up and does not fall. It is important to note that the heavier the object, the more its potential energy.
Some facts:
When an object is held in a vertical position, it has gravitational energy because gravity is working to pull it down.
The amount of gravitational energy of an object depends on its height above the ground and its mass
Elastic energy
Kinetic energy
All moving things have kinetic energy. It is energy possessed by an object due to motion or movement. These include very large things, like planets, and very small ones, like atoms. The heavier a thing is, and the faster it moves, the more kinetic energy it has.
Some facts:
- Kinetic energy can be calculated for any moving object as as the objects his mass and speed are known.
- When an object his speed doubles, the kinetic energy quadruples ( four times )
Elastic energy is the potential energy stored in the configuration of a material or physical system as work is performed to deform its volume or shape. The another type of potential energy is gravitational energy.
Some facts:
- Elastic potential energy is the energy stored in objects that can be streched or compressed
- Objects such as trampolines, rubber bands and bungee cords all have elastic potential energy
Electrical energy
Chemical energy
Electrical energy is energy that comes from electrical potential energy. This energy is generated by the movement of positive and negative particles or electricity. Once electrical energy leaves its source, it is instantly transformed into a different kind of energy.
Some facts:
- Lightning is an example of electrical energy found in nature
- The two types of electrical charge in electrical energy are positive and negative
The energy that results during a chemical reaction is called chemical energy. It is a type of potential energy. Chemical is stored within the bonds of the atoms and molecules that make up a substance. Once chemical energy is released from a substance, the substance is transformed into a new substance.
Some interesting facts:
- Our bodies use chemical energy to perform daily functions
- Cooking is a good example of a reaction
Thermal energy
Thermal energy is the energy that comes from heat. This heat is generated by the movement of tiny particles within an object. The faster these particles move, the more heat is generated. Matches is an example of an object that conduct thermal energy.
Some facts:
- Thermal energy is a part of the total energy of any object
- Thermal energy is related to the temperature of an object
Index
Energy presentation
Sound
- Chemical energy
- Elastic energy
- Gravitational energy
- Kinetic energy
- Electric energy
- Heat
- Sound
- Nuclear energy
- Conversions
- Light
Sound is the movement of energy through substances in waves. Sound is produced when a force causes an object or substance to vibrate, the energy is transferred through the substances in waves.
Some facts:
- Because sound produces such a low level of energy it is not used for electricity
- Sound is meausured in decibels and pascals instead of the tradition unit of energy measurement, the joule
Jurre van Dinter
Django Jagt
Nuclear energy
Nuclear energy is the energy required to split the nucleus of an atom its component parts. Most of these nuclear processes are performed using the earth elements. During the production of nuclear energy the nucleus of atoms either joins or breaks apart.
Conversions
Lamp: turns electrical energy into light and thermal energy
Iron: turns electrical energy into thermal energy
Acoustic guitar: turns kinetic energy into sound and thermal energy
Bomb: turns nuclear energy into sound and thermal energy
Box: turns movement into sound