Phy Sci 6ed chapter 15 review

What is the proper definition of Temperature?

• proportional to the average kinetic enery of all particles in an object

• proportional to the total kinetic energy of all particles in an object

• the total potential energy between molecular bonds in an object

• the joules/mole of the total particle energy in an object

which fiduciary points are used for the Celsius and Kelvin scales in its modern definition?

• celsius uses the freezing and boiling points of water, kelvin uses absolute zero and the triple point

• celsius uses absolute zero and the triple point of water, kelvin uses the freezing and boiling point

• both use the freezing and boiling points of water

• both use absolute zero and the triple point of water

Answer explanation

it was originally the freezing and boiling point, but was redefined as absolute zero and the triple point of water in 1954

What does 0 ^oF, 32 ^oC, and 273.15 K have in common?

• They all represent the boiling point of water.
• They are all prime numbers.
• They all represent the freezing point of water.
• They all represent the triple point of water

What will happen when two objects of differing temperatures come in prolonged contact with each other?

• The hotter object will stay the same while the cooler object heats up

• Heat will transfer from the hotter object to the cooler object until they reach thermal equilibrium.
• The objects will repel each other due to their temperature difference
• The objects will merge into a single object with an average temperature

Which type of thermal energy transfer is demonstrated by hotter magma rising in the earths core and cooler magma falling?

• conduction

• convection

• insulation

• radiation

Which type of thermal energy transfer is demonstrated by the sun's rays warming the back of a gecko?

• conduction

• convection

• insulation

• radiation

What is a calorimeter used for?

• to find the potential chemical energy in food

• to calculate the specific heat of a substance

• to find the total thermal energy in a substance

• to find the average kinetic energy of particles of a substance

What is the heat of fusion?

• the amount of heat required to melt a solid

• the amount of heat required to solidify a liquid

• the amount of heat required to form a plasma

• the amount of energy needed to undergo nuclear fusion

What was the caloric theory's concept of heat most like?

• magic

• an invisible fluid

• the kinetic energy of particles

• the density of particles in a substance

Which theory describes heat as a function of the constant motion of particles?

• caloric theory

• heat of vaporization model

• kinetic-molecular theory

• law of thermodynamics