Cylinder
A right circular cylinder has two congruent circular bases. This topic is part of Mathematics within Science & Nature. This page currently draws on 22 supporting questions, with answers and bonus facts available below.
Cylinder trivia questions
A cylinder has two parallel bases of what shape?
Answer: Circle
Bonus fact: A right circular cylinder has two congruent circular bases.
What is the volume of a cylinder with radius r and height h?
Answer: πr²h
Bonus fact: Cylinder volume equals base area times height.
How many curved and flat surfaces does a closed right circular cylinder have altogether?
Answer: 3
Bonus fact: A closed cylinder has two flat circular faces and one curved lateral surface.
In a four-stroke engine, what stroke draws the fuel-air mixture or air into the cylinder?
Answer: Intake stroke
Bonus fact: The intake stroke begins the four-stroke cycle.
What engine component moves up and down inside a cylinder and transfers force to the crankshaft?
Answer: Piston
Bonus fact: Combustion pushes the piston, which drives the crankshaft through a connecting rod.
What part moves up and down inside a typical gasoline engine cylinder?
Answer: Piston
Bonus fact: Expanding gases push the piston.
A screw is basically what simple machine wrapped around a cylinder?
Answer: Inclined plane
Bonus fact: Threads convert rotational motion into linear motion.
Which two simple machines are closely related because one is an inclined plane wrapped around a cylinder?
Answer: Screw and inclined plane
Bonus fact: The thread of a screw is a helical inclined plane.
In the NBA, can a player touch a ball directly above the rim while it is within the imaginary cylinder?
Answer: Generally no
Bonus fact: Basket interference rules protect the cylinder.
What hydraulic component converts pressurized fluid into linear motion to move an excavator's boom or bucket?
Answer: Hydraulic cylinder
Bonus fact: Hydraulic cylinders extend and retract to move the excavator's working arms.
What inexpensive high-speed printing method became central to mass newspapers using rolls of paper?
Answer: Rotary press
Bonus fact: Rotary presses print continuously from cylinders.
What component converts control signals into physical movement in a robot?
Answer: Actuator
Bonus fact: Motors and hydraulic cylinders are common actuators.