Group 7: Quiz in Science

involves control of temperature, humidity, cleanliness of air and its distribution to meet the comfort of human beings and in some industrial uses

• Air conditioning

• Heat Engine

• Exhaust Stroke

• Power Stroke

is a device that changes thermal energy into mechanical work. It consists of a gas confined by a piston in a chamber. If the gas is heated, it expands, making the piston move.

• Air Conditioning

• Heat Engine

• Exhaust Stroke

• Power Stroke

W means?

Qc means?

It is the piston moves down as the fuel-air mixture fills in the cylinder.

the piston moves up and compresses the mixture adiabatically, since no heat transfer happens.

the burned gases are pushed out of the exhaust valve. The intake valve once again opens and the cycle repeats.

it is when the adiabatic process tends to push the

piston down.