Question

question 5
what term matches the definition below?
a disk or short cylinder fitting closely within a tube in which it moves up and down against a liquid or gas, used in an internal combustion engine to derive motion, or in a pump to impart motion
a. engine
b. cylinder
c. automotive
d. piston

question 6
what term matches the definition below?
the space through which the piston travels, propelled to the energy generated from the combustion of the air/fuel mixture in the combustion chamber.
a. exhaust system
b. cylinder head
c. spark plug
d. cylinder

question 7
what term matches the definition below?
the part that takes the waste created by the car in the form of gas or smoke and expels it through the tailpipe
a. exhaust system
b. cylinder head
c. spark plug
d. cylinder

question 8
what term matches the definition below?
a device for firing the explosive mixture in an internal combustion engine
a. exhaust system
b. cylinder head
c. spark plug
d. cylinder

question 9
what term matches the definition below?
the part of the car that serves to limit the release of harmful gases from cars into the atmosphere
a. cooling system
b. emission controls
c. torque
d. combustion cycle

Explanation:

Question 5

The definition describes a disk/cylinder moving in a tube for engine or pump motion. An engine is the whole machine, a cylinder is the tube, automotive is related to cars, and a piston is the moving part. So the term is piston.

The space the piston travels in, propelled by combustion energy, is the cylinder. Exhaust system deals with waste, cylinder head is top of cylinder, spark plug ignites fuel. So it's cylinder.

The part expelling gas/smoke waste through tailpipe is the exhaust system. Cylinder head, spark plug, and cylinder don't handle waste expulsion. So it's exhaust system.

Answer:

d. Piston

Question 6