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Temperature and Heat
Key Words
Transferring Thermal Energy
Multiple Choice
Using Heat
100
__________ is thermal energy that flows from something at a higher temperature to some- thing at a lower temperature.
What is Heat
100
The average kinetic energy of the particles that make up the object.
What is tempurature
100
The transfer of thermal energy in a fluid by the movement of warmer and cooler fluid from place to place.
What is Convection
100
Which of the following devices is an example of a heat mover? A) solar panel B) refrigerator C) internal combustion engine D) diesel engine
What is B. Refrigerator
100
_____________systems convert radiant energy from the Sun to thermal energy.
What is Solar Heating
200
If temperature is constant, the _____________ increases when the mass increases.
What is Thermal Energy
200
The sum of the kinetic and potential energy of all the particles in an object.
What is Thermal Energy
200
The transfer of energy by electromagnetic waves.
What is Radiation
200
Which of these is NOT used to calculate change in thermal energy? A) volume B) temperature change C) specific heat D) mass
What is A. Volume
200
The heat engine in a car is an ________________________ in which fuel is burned inside the engine in chambers or cylinders.
What is Internal Combustion Engine
300
The specific heat of a material can be measured using a device called a ________________.
What is Calorimeter
300
The amount of heat needed to raise the temperature of 1 kg of the material 1°C.
What is Specific Heat
300
__________ are used to reduce the rate of heat transfer from one place to another.
What is Insulators
300
In which of the following devices is fuel burned inside chambers called cylinders? A) internal combustion engine B) radiator C) heat pump D) air conditioner
What is A. Internal Combustion Engine
300
A device that converts heat into work is _________
What is A Heat Engine
400
Explain whether or not the following statement is true: If the thermal energy of an object increases, the temperature of an object must also increase.
It is not true. The increase in thermal energy may increase the potential energy so that the temperature remains unchanged.
400
The transfer of thermal energy by collisions between more energetic and less energetic particles.
What is Conduction
400
___________ occurs in fluids. Rising of warmer fluid and sinking of cooler fluid forms a con- vection current.
What is Convection
400
Which of the following is the name for thermal energy that is transferred only from a higher temperature to a lower temperature? A) potential energy B) kinetic energy C) heat D) solar energy
What is C. Heat
400
________ states that it is impossible for heat to flow from a cool object to a warmer object unless work is done.
What is The second law of Thermodynamics
500
The change in thermal energy can be calculated by what equation?
What is Q=M(T(f)-T(i))C
500
This states that the increase in thermal energy of a system equals the work done on the system plus the heat added to the system.
What is The first law of thermodynamics
500
Sitting in the shade reduces the heat transferred to you by ____________
What is Radiation
500
On a hot day a friend suggests that you can make your kitchen cooler by leaving the refrigerator door open. Explain whether leaving the refrigerator door open would cause the air temperature in the kitchen to decrease.
It would nor cool the kitchen. The thermal energy from the kitchen that is transferred to the refrigerator coolant would be transferred back to the kitchen from the condenser coils.
500
Thermal energy, heat, and work are related, and the study of the relationship among them is___________
What is Thermodynamics