energy, t1

    Cards (57)

    • name 5 energy stores
      1. thermal energy
      2. Kinetic energy
      3. Gravitational Potencial Energy
      4. Elastic potential Energy
      5. Chemical Energy
      6. Magnetic Energy
      7. Electrostatic Energy
      8. Nuclear Energy
    • what is work done?
      Work done is the transfer of energy resulting from the application of a force over a distance. its basically another way of saying energy transfered
    • Gravitational Potential Energy
      Energy stored due to an object's height or position. Can be converted to Kinetic Energy as the object falls or moves down a slope.
    • Elastic Potential Energy

      Energy stored in stretched or compressed materials, such as springs or rubber bands. Converted to Kinetic Energy when the material returns to its original shape.
    • Chemical Potential Energy
      Energy stored in the bonds of molecules, released during chemical reactions. Examples: breaking down glucose to release energy or burning fossil fuels.
    • Kinetic Energy

      Energy of motion, associated with an object's velocity. e.g., moving ball, spinning top, etc.
    • Internal Energy
      Sum of Kinetic Energy and Potential Energy of particles in an object. Example: heat energy.
    • Thermal Energy
      Type of Internal Energy, relating to temperature. Example: heat transferred from one object to another.
    • Elastic Stored Energy

      Energy stored in an object's shape or size, such as a stretched spring or compressed material.
    • Mechanical Energy
      Sum of Kinetic Energy and Potential Energy in an object. Example: a roller coaster has both kinetic and potential energy.
    • Conduction
      The transfer of heat energy through direct contact between particles. Examples: metal spoon in hot coffee, walking on a hot road.
    • Convection
      The transfer of heat energy through the movement of fluids. Examples: warm air rising, ocean currents.
    • Thermal to Mechanical Energy Conversion

      E.g., engine converts thermal energy from fuel into mechanical energy, steam turbines generate electricity.
    • Mechanical to Thermal Energy Conversion
      E.g., friction generates heat (e.g., brakes on a car), bicycle wheels generate kinetic energy and convert it to thermal energy.
    • what is specific heat capacity
      its a way of calculating how hard is it to heat something up
    • how many J do you need to heat water by 1ºC
      4,200J
    • Conservation of Energy
      The total energy of a closed system remains constant over time. Energy can change from one form to another, but the total amount remains the same.
    • Energy Conversion
      The conversion of energy from one form to another, such as electrical energy to kinetic energy.
    • Efficiency
      The ratio of useful output to total input, often expressed as a percentage. Efficiency can affect the amount of energy converted or transferred.
    • Power
      The rate at which energy is transferred or converted, typically measured in Watts (W).
    • Rate of Energy Transfer
      The amount of energy transferred or converted per unit time.
    • Units of Power
      Watts (W), Kilowatts (kW), Megawatts (MW)
    • Example: Power of a Lamp
      If a lamp uses 60W of power to light a room, what is the rate of energy transfer? (Answer: 60W)
    • What is the topic being discussed in the video?
      The energy topic of GCSE physics
    • Why should students pause and take notes during the video?
      To ensure they are as prepared as possible for the GCSE exam
    • How many different energy stores are mentioned in the video?
      Eight different energy stores
    • What are the eight different energy stores that need to be remembered for the energy topic?
      • Kinetic
      • Thermal
      • Gravitational potential
      • Elastic potential
      • Chemical
      • Electrostatic
      • Magnetic
      • Nuclear
    • Which energy stores are more common and should be focused on?
      The ones that are more recognizable to the students
    • What is the equation for kinetic energy?
      Kinetic Energy = 0.5 x m x v^
    • What is the equation for gravitational potential energy?
      Gravitational Energy = m x g x h
    • What units can gravitational field strength be expressed in?
      Newtons per kilogram or meters per second squared
    • What does elastic potential energy relate to?
      It relates to when things are being stretched or compressed
    • What is the definition of specific heat capacity?
      It is the energy required to increase the temperature of one kilogram of a substance by one degree Celsius
    • What is the equation for calculating the change in energy using specific heat capacity?
      Change in energy = mass × specific heat capacity × temperature change
    • How can specific heat capacity be rearranged?
      To isolate specific heat capacity on its own
    • What is the conservation of energy principle?
      Energy can never be created or destroyed, only transferred, stored, or dissipated
    • What does the conservation of energy imply about the total energy in the universe?
      The total energy remains constant since the beginning of the universe
    • What is power defined as?
      Power is the rate of doing work
    • How is power related to time?
      It is often related to how quickly work is done
    • What is conduction?
      Conduction is the transfer of heat through solids
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