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Energy Transfer and Transform

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  • What useful energy does a heater produce?
    Heat energy
  • Can energy be created or destroyed?
    No, only transferred
  • The way in which thermal energy flows as waves is known as ____________.
    Radiation
  • Is wasted energy destroyed?
    No
  • What wasted energy does a lamp often produce?
    Heat energy
  • _______________ energy is involved when objects are bent.
    (Elastic) Potential energy
  • What is the unit of power?
    Watt, W
  • What type of energy does a book on a high shelf have?
    Gravitational potential energy
  • What is gravitational potential energy?
    Energy stored by an object lifted above the ground
  • What type of energy is produced when something vibrates?
    Sound energy
  • The form of energy that we can see is known as ____________.
    light energy
  • What energy transfer happens in a lamp?
    Electrical energy to light energy and heat energy
  • What useful energy does a lamp produce?
    Light energy
  • What is kinetic energy?
    Energy of a moving object
  • Energy of moving objects is known as __________.
    kinetic energy
  • What energy does wind have before it turns a turbine?
    Kinetic energy
  • The form of energy that we can hear ___________.
    sound energy
  • What is elastic potential energy?
    Energy stored in a stretched or compressed object
  • What energy transfer happens in a hair dryer?
    Electrical energy to heat energy and kinetic energy
  • What does a Sankey diagram show?
    Energy transfers, useful energy, wasted energy
  • What does power measure?
    How fast energy is transferred
  • What useful energy does a wind turbine produce?
    Electrical energy
  • Sound energy is caused due to the __________ of objects.
    vibration
  • What type of energy does a hot object transfer to cooler objects?
    Heat energy
  • What type of energy is stored in a stretched rubber band?
    Elastic potential energy
  • What type of energy does a battery provide in a circuit?
    Electrical energy
  • _____________ is a source of light that was developed by scientists.
    flashlight
  • What useful energy does a phone screen produce?
    Light energy
  • What happens to wasted energy?
    It is transferred to something else
  • What two things increase gravitational potential energy?
    More mass and more height
  • What type of energy is produced by a speaker?
    Sound energy
  • The ability to do work or cause a change is known as _____________>
    energy
  • The stored energy of an object at rest is known as_______________.
    Potential energy
  • What useful energy does a motor produce?
    Kinetic energy
  • What type of energy does the Sun give us?
    Light energy, heat energy
  • What happens to kinetic energy if an object moves faster?
    It increases
  • What type of energy is stored in food and fuel?
    Chemical energy
  • Chemical energy of gasoline gets transformed into __________ energy.
    kinetic and heat
  • What is the unit of energy?
    Joule, J
  • What type of energy does a moving car have?
    Kinetic energy
  • What energy transfer happens when food is used by the body?
    Chemical energy to kinetic energy and heat energy
  • Energy stored in gasoline is __________ energy.
    chemical
  • The energy stored in food, gasoline or chemicals.
    chemical energy
  • The transformation of energy when dominoes fall is from __________ to __________.
    potential to kinetic
  • What does “wasted energy” mean?
    Energy transferred in a less useful way
  • What is the formula for efficiency?
    useful energy ÷ total energy × 100%
  • What type of energy is carried by an electric current?
    Electrical energy
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