Energy

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Tanvi Patel
Mind Map by Tanvi Patel, updated more than 1 year ago
Tanvi Patel
Created by Tanvi Patel almost 6 years ago
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Energy
  1. Joules
    1. A joule is defined as when a force of 1 newton is applied to an object and displaces (move) that object by 1 metre.
    2. Units for measurement.
      1. Giga, Mega, Kilo, Milli, Micro and Nano.
      2. Work
        1. Energy transfer that occurs when an object is moved over a distance. Measured in Joules
        2. Kinetic
          1. A measure of energy in movement.
          2. Gravitational Potential
            1. Energy stored in an object based on how high it is stored.
            2. Elastic Potential
              1. Energy stored in an object due to deformations Such as a spring, rubber band
              2. Chemical Potential
                1. Energy stored in bonds of chemical When we use the energy, chemical bonds break, releasing the energy for us to use
                2. Nuclear
                  1. Energy stored in the nucleus of particles Nuclear reactors splits the atom and use this type of energy to generate electricity.
                  2. Sound
                    1. Another form of kinetic energy which causes vibrations of particles in sound. This is the reason why you can’t hear in the vacuum of space. There are no particles for sound to vibrate in
                    2. Heat or Thermal
                      1. Type of kinetic energy that exists in the vibrations of particles. Reason why heat generally transfers the best in solids
                      2. Light
                        1. Light is a electromagnetic wave. A type of wave that oscillates (moves back and forth) in the electric and magnetic fields. It does not need particles to travel through unlike sound. However light has energy and it can excite electrons and generate electricity. Eg. Solar panels. Light energy and heat energy from the sun powers everything on Earth.
                        2. Electric
                          1. Electrical energy is the movement of electrons in a substance. A conductor of electricity is a substance that allows electrons to flow easily through An insulator of electricity is a substance that does not allow electrons to flow through.
                          2. Energy Transfer
                            1. Energy transfer represents the ability of energy to move from one place to another. Electricity can be transferred over a large distance very quickly with minimal energy lost. No other forms of energy can match electricity in that regard.
                            2. Energy Trtansformations
                              1. Energy transformation represents the change of energy from one form to another. Sometimes it is referred to as energy conversion. A light bulb transforms electrical energy into light and heat A fan transforms electrical energy into kinetic energy and sound
                              2. Conservation of Energy
                                1. Energy cannot be created or destroyed. It can only be converted (transformed) from one form to another. It means that we don’t just magically create energy. We must have gotten it from another source.
                                2. Energy Efficiency
                                  1. When a device converts energy from one form to another, some energy is always produced in an unwanted form. A light bulb will produce heat as the unwanted energy Efficiency represents how effective the device is at converting energy into the wanted form. Efficient light will produce mainly light energy and very little heat energy. Efficient car will produce mainly kinetic energy and very little heat and sound energy.
                                  2. Conduction
                                    1. Heat energy is transferred through a solid by the process of conduction. When particles are heated, they start to vibrate. The vibrating particles hit a neighnouring particle and so on. The heat can therefore transmitted from one side to another.
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