Wheels, Axels, and Inclined Plane

Which of the following is an example of a pulley?

• A doorknob

• A flagpole rope system

• A bicycle wheel

• A screwdriver

What is the main function of a wheel and axle?

• To lift heavy objects vertically

• To reduce friction and make movement easier

• To cut materials

• To hold things together

Which of the following best describes a gear?

• A flat surface set at an angle

• A wheel with teeth that interlock with another wheel

• A sloped surface wrapped around a cylinder

• A rope looped over a wheel

Blocks and tackle systems are used to:

• Increase the speed of rotation

• Change the direction and multiply the force used to lift objects

• Hold two objects together

• Cut through materials

Which of the following is an example of a wedge?

• A ramp

• A knife blade

• A wheelbarrow

• A pulley

A screw is related to which simple machine?

• Pulley

• Inclined plane

• Lever

• Gear

Which type of pulley is attached to a fixed point and does not move?

• Movable pulley

• Fixed pulley

• Compound pulley

• Block and tackle

Which of the following is an example of a wheel and axle in everyday life?

• Scissors

• Door hinge

• Rolling office chair

• Hammer

What is the main purpose of gears in a machine?

• To hold objects together

• To change the speed or direction of motion

• To cut materials

• To lift objects

Which of the following best describes how a wedge works?

• It rolls to reduce friction

• It multiplies force to split or cut objects

• It rotates to transfer motion

• It lifts objects vertically