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Ch 1 Energy

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  • What energy depends of the motion, position, or shape of an object?
    mechanical energy
  • Name the 5 energys that are associated with particles.
    Thermal, Chemical, Electric, Electromagnetic, Nuclear
  • As a roller coaster moves along the tracks the KE and PE vary. What happens to the Mechanical Energy?
    It stays the same
  • What energy depends on position or shape of an object?
    Potential Energy
  • When you rub your hands together you transfer ___________ energy to ________________ energy.
    mechanical to thermal
  • How is energy released in nuclear fusion?
    The nuclei fuses together
  • How does electromagnetic energy get from one place to another?
    It travels through space in waves
  • name the energy transformation that happens when natural gas is used to heat water
    chemical to thermal
  • The total kintetic and potential energy of particles is called
    thermal energy
  • True or False Nuclear Fission happens in the sun
    false- it happens in power plants
  • The Law of Conservation of Energy states that when one form of energy is transformed to another
    no energy is lost in the process, not created or destroyed- only transformed
  • When you double the speed what happens to the kinetic energy?
    It quadruples
  • True or False Work input is always less than output because of thermal waste
    False- input is greater than output
  • To maintain body temperature, chemical energy is transformed into _________ energy
    Thermal energy
  • Why does a pendulum eventually slow down and stop swinging?
    Friction transforms some of the mechanical energy to thermal energy
  • How do you calculate the mechanical energy of an object?
    KE + PE
  • When a pendulum swings, at its highest point it ___________
    stops
  • Name 3 places that chemical energy can be found
    food, matches, batteries, body cells
  • An object with mechanical energy can do _________ on another object
    work
  • What transformation happens when the sun releases nuclear energy?
    Electromagnetic energy comes to Earth as heat and light
  • When you double the mass what happens to the kinetic energy?
    it doubles
  • When you do work on an oject, some of your energy is ____________ to that object
    transferred
  • When you squeeze a rubber ball what kind of energy is being given?
    Elastic Potential Energy
  • Describe the energy transformation when you drop a ball from a high position
    Gravitational potential energy transforms into kinetic energy
  • Animals eat plants and convert the chemical energy contained in them into
    kinetic energy
  • Kinetic energy is affected by, or depends on, what two factors?
    mass and speed
  • Name the 3 part transformation. A charcoal grill is lit in order to cook my dinner
    chemical to thermal to chemical
  • Name the energy of electric charges
    Electrical energy
  • Rate at which energy is transferred is called
    Power
  • What two factors affect gravitational potential energy?
    height and mass
  • Which has a greater effect on kinetic energy? increasing the speed or increasing the mass
    increasing the speed
  • The higher the temperature of an object, the _________ thermal energy the object has.
    more
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