Waste in Our World

Axel

• a shaft or rod on which a wheel turns

• a type of ice skating jump

• a tool

• the wheel where a tool turns

Balance

• what you do on a balance beam

• a scale

• a condition in which opposing forces exactly balance or equal each other

• equality between two objects

block and tackle

• wooden blocks

• the box where you store tools

• a system

• a unit made up of several pulleys linked together by ropes

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Cog

• a type of machinery

• another term for gear wheel

• Children's Oncology Group

• a spurwheel

What is the definition of Conservation of Energy?

Answer explanation

Energy can neither be created nor destroyed. The energy output of a machine is equal to the energy input.

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True or False: a driver is a wheel or gear that transfers force to other wheels or gears

• True

• False

Driven gear or wheel

• a wheel that drives

• the wheel or gear that is moved by the force of a driver wheel or gear

• none of these options

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Effort

• The force that produces an action

• putting in many hours of work

• a push or pull

• all of these answers

Energy is the _____

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Force

• strength or energy

• a push or pull that makes an object move (F=md)

• the length that an object moves

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