U7:S3 - Simple Machines Quiz

What is a device that changes the direction or magnitude of a force, making work easier?

• Pulley

• Simple Machine

• Lever

• Wheel and Axle

What is a flat surface tilted at an angle, used to help raise or lower objects?

• Lever

• Pulley

• Inclined Plane

• Wheel and Axle

Which simple machine consists of a wheel with a groove along its edge, where a rope or cable can be placed to change the direction of the force applied to lift a load?

• Lever

• Pulley

• Inclined Plane

• Wheel and Axle

What is a rigid bar that pivots around a fixed point (fulcrum) to lift or move loads with less effort?

• Lever

• Pulley

• Inclined Plane

• Wheel and Axle

What is a larger wheel attached to a smaller cylindrical object (axle); when one turns, the other does too, creating mechanical advantage?

• Lever

• Pulley

• Inclined Plane

• Wheel and Axle

What is the factor by which a machine multiplies the force put into it?

• Efficiency

• Mechanical Advantage

• Input Force

• Output Force

What is the ratio of the useful work performed by a machine or system to the total energy expended or heat taken in?

• Efficiency

• Mechanical Advantage

• Input Force

• Output Force

What is the fixed point around which a lever pivots?

• Load Arm

• Effort

• Fulcrum

• Inclination

What is the object or weight that is being moved or lifted by a machine?

• Load

• Effort

• Force

• Work

What is the force applied to a machine to do work?

• Load

• Effort

• Force

• Work