Science 8 Unit 5 Vocab Check

Front

What is a simple machine?

Back

A simple machine is a device that does work with only one movement, making tasks easier by changing the direction or magnitude of a force.

Front

What is a screw in terms of simple machines?

Back

A screw is an inclined plane wrapped around a cylinder, used to hold objects together or lift materials.

Front

What is work in physics?

Back

Work is done when a force causes an object to move in the same direction that the force is applied.

Front

What is efficiency?

Back

Efficiency is the ratio of output work to input work, indicating how well a machine converts input energy into useful work.

Front

What is power in the context of work?

Back

Power is how quickly work is done, measured as the amount of work done per unit of time.

Front

What is a complex machine?

Back

A complex machine is made up of two or more simple machines working together to perform a task.

Front

What is an inclined plane?

Back

An inclined plane is a flat surface that is tilted at an angle to help lift objects with less effort.

Front

What is a lever?

Back

A lever is a simple machine that consists of a rigid bar that pivots around a fixed point called the fulcrum.

Front

What is a wedge?

Back

A wedge is a simple machine that is a triangular-shaped tool used to separate objects or hold them together.

Front

What is a pulley?

Back

A pulley is a simple machine that consists of a wheel on an axle or shaft designed to support movement and change the direction of force.