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Unit 2 Review

Quiz by Christine Bonnell

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14 questions
Show answers
  • Q1
    When a driver touches a car's steering wheel on a hot day, heat is transferred to the driver's hands by __________.
    Convection
    None of these
    Radiation
    Conduction
    30s
  • Q2
    Why does an ice cube melt when you hold it in your hand?
    Your hand transfers temperature to the ice cube.
    The ice cube radiates heat to your hand.
    Heat is transferred from your hand to the ice cube.
    Heat from the ice cube is transferred to your hand.
    45s
  • Q3
    What is the thermal energy of an object?
    the total kinetic energy of its particles
    its total temperature
    the total kinetic and potential energies of its particles
    the total potential energy of its particles
    30s
  • Q4
    When is thermal equilibrium achieved between two objects?
    when one objects is hotter than the other
    when the particles in one object have more kinetic energy
    when temperature is no longer transferred
    when both objects have the same temperature
    45s
  • Q5
    How can you tell if two objects are in thermal equilibrium?
    The objects have the same temperature.
    The objects are the same size.
    The objects' temperatures are changing.
    The objects are touching each other.
    30s
  • Q6
    Which statement explains the kinetic theory of heat?
    An object's thermal energy is caused by the movement of the tiny particles that it is made of.
    Objects are made of tiny particles, and their motion depends on the temperature.
    Heat is transferred as thermal energy by the interaction of moving particles.
    Objects whose particles are at the same temperature are in thermal equilibrium.
    60s
  • Q7
    What is the relationship between the kinetic energy of molecules in an object and the object's temperature?
    The total kinetic energy of the molecules is not affected by a change in temperature.
    As the temperature increases, the kinetic energy of the molecules increases.
    As the kinetic energy of the molecules decreases, the temperature increases.
    The kinetic energy always increases whether the temperature increases or decreases.
    60s
  • Q8
    To remove a tight-fitting lid from a jar, Megan runs the lid under hot water. What happens to the jar lid when its temperature increases?
    The potential energy increases, and the lid contracts.
    The temperature increases, and the lid expands.
    The temperature decreases, and the lid contracts.
    The potential energy decreases, and the lid expands.
    45s
  • Q9
    What happens when the temperature of an object decreases?
    The object's particles move slower.
    The number of the object's particles decreases.
    The object's particles stop moving.
    The object's particles move farther apart.
    45s
  • Q10
    How do you convert from Fahrenheit to Celsius temperatures?
    You would multiply the number by 9/5 and then add 32.
    Subtract 273 from the original number.
    You subtract 32 and then multiply that number by 5/9.
    Add 273 to the original number.
    45s
  • Q11
    Which three temperature readings all mean the same thing
    273 Kelvin, 0 degrees Celsius, 212 degrees Fahrenheit
    373 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
    100 Kelvin, 0 degrees Celsius, 32 degrees Fahrenheit
    273 Kelvin, 100 degrees Celsius, 212 degrees Fahrenheit
    45s
  • Q12
    Which statement accurately describes what happens when ice melts in terms of energy?
    The ice releases energy which causes chemical bonds to break, changing the ice to water.
    The ice releases energy which causes the water molecules to have less kinetic and potential energy, changing their configuration from solid to liquid.
    The ice absorbs energy which causes the water molecules to have more kinetic and potential energy, changing their configuration from a solid to a liquid.
    The ice absorbs energy which causes chemical bonds to break, changing ice to water.
    60s
  • Q13
    Which statement accurately describes what happens when water vapor condenses into dew in terms of energy?
    The water absorbs energy which causes the water molecules to have more kinetic and potential energy, changing their configuration from a gas to a liquid.
    The water releases energy which causes chemical bonds to form, changing water vapor into dew.
    The water releases energy which causes the water molecules to have less kinetic and potential energy, changing their configuration from gas to liquid.
    The water absorbs energy which causes chemical bonds to form, changing water vapor into dew.
    60s
  • Q14
    In the first law of thermodynamics, E = Q - W, what does Q stand for?
    the internal energy of the system
    the work done by the piston
    the heat added to the system
    the change in the internal energy of the system
    30s

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