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Science - Kinetic Energy

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  • 1 joule is the amount of energy needed to apply a force of
    1 newton over 1 meter
  • What does the law of conservation of energy state?
    Energy cannot be created or destroyed.
  • Energy from a burner will cause the pot to heat up on a stove. The heat will cause the water to come to a boil. What is the relationship between?
    energy and the system of the water-filled pot
  • How can scientists use the same unit (joules) to measure both types of energy?
    Kinetic and potential energy are relate. Remember, a system's total energy equals its potential energy plus its kinetic energy.
  • Scientists measure both potential energy and kinetic energy in
    joules
  • The increase or decrease of different forms of energy in a system has a direct effect upon
    the system's physical variables.
  • Name 2 main forms of energy in a system.
    Potential and kinetic
  • Energy can take many forms, such as (name 3 forms)
    mechanical energy, sound energy, thermal energy
  • What does a joule describe?
    the amount of energy needed to do a certain amount of work or cause a certain amount of change.
  • 1 joule (J) =
    1kg x m2/s2
  • energy in the form of motion
    kinetic energy
  • Name 5 examples of a system's variable.
    temperature, speed, position, pressure, and motion
  • Kinetic energy is proportional to
    the mass of the moving object and grows with square of its speed.
  • What do all forms of energy have in common?
    The ability to cause changes to a system (a set of connected things that work together).
  • stored energy
    potential energy
  • 1 joule is equivalent to the energy needed to raise
    a medium apple (100 g) up 1 meter
  • The energy of objects in motion.
    kinetic energy
  • What is a joule?
    the unit of measurement for energy
  • What occurs when the motion energy of an object changes?
    there is inevitably some other change in energy at the same time. This means that energy can transfer to another object or to the surroundings.
  • More joules of energy can
    perform more work or cause more change.
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