WorksheetsThermodynamics and Using Heat
Total questions: 15
Worksheet time: 16mins
Thermal energy can move from a cooler object to a warmer object when
the warmer object is larger.
the cooler object has more thermal energy.
energy is transferred by radiation.
work is done on the system.
All metals are good thermal insulators.
True
False
Which of these three processes DOES NOT allow for the change of thermodynamic properties according to the first law?
Isobaric
Isovolumetric
Isothermal
Because it leads to an increase in entropy heat spontaneously flows
from low temperature to high temperature.
over the river and through the woods.
from high temperature to low temperature.
from a refrigerator into your food.
Only about one third of the energy in gasoline is converted to work in an internal combustion engine. The rest of the chemical energy is
lost as unused mechanical energy.
destroyed by the engine.
converted to potential energy.
discharged as waste heat.
How do air conditioners reverse the normal flow of heat?
Moving cool air from outside to inside the house.
Separating warm atoms from cool atoms.
Vaporizing and condensing a refrigerant.
Blowing the warm air away with a fan.
Forced air heating systems are often used to heat many buildings from a central location
True
False
Which one of these is not a form of heating system for a building?
Microwave heating.
Forced-air heating.
Steam heating.
Electric baseboard heating.
Which of these is an example of an external combustion engine?
Car Engine
Steam Engine
Airplane Engine
Gas Turbine
What form of energy transfer requires the motion of particles of a fluid?
Convection
Conduction
Radiation
Insulation
What is the primary function of a thermostat in a heating system?
To control the temperature of the heating element.
To distribute heat evenly throughout the building.
To regulate the room temperature by controlling the heating system.
To convert electrical energy into heat.
What is the process by which heat is transferred through direct contact?
Convection
Conduction
Radiation
Insulation
Which of these is not a good conductor of heat?
Metal
Wood
Iron
Copper
The term for the process in which heat is transferred from a hotter object to a cooler one is Conduction.
True
False
According to the second law of thermodynamics, in an isolated system, entropy
remains constant.
decreases over time.
increases over time.
is not affected by time.
