Using of thermal energy

In which device is fuel burned inside chambers called cylinders?

• internal combustion engine

• external combustion engine

• heat pump

• air conditioner

During which phase of a four-stroke engine are waste gases removed?

• power stroke

• intake stroke

• compression stroke

• exhaust stroke

Which device transfers thermal energy from a cooler region to a warmer region?

• solar panel

• refrigerator

• internal combustion engine

• thermal conductor

Which type of heating system is illustrated below?

• radiator

• electric

• forced air

• solar

Which does not directly play a role in converting the motion of the pistons into rotation of the wheels?

• crankshaft

• coolant

• transmission

• differential

Which are used to reduce the transfer of thermal energy from one place to another?

• conductors

• convection currents

• insulators

• conduction currents

Which is NOT a form of thermal energy transfer?

• conduction

• convection

• spontaneity

• radiation