Simple Machines Quiz

A simple machine is a mechanical device that changes the direction or magnitude of a force. It works by using mechanical advantage to multiply force.

The six classical simple machines defined by Renaissance scientists are lever, wheel and axle, pulley, inclined plane, wedge, and screw.

A simple machine increases the output force at the cost of a proportional decrease in the distance moved by the load.

<p>The ratio of the output to the applied force is called the mechanical advantage.</p> Signup and view all the answers

<p>Simple machines are considered to be the elementary 'building blocks' of which all more complicated machines are composed.</p> Signup and view all the answers

<p>To maintain internal chemical homeostasis</p> Signup and view all the answers

<p>Through all of the above</p> Signup and view all the answers

<p>Only the organs specifically used for excretion</p> Signup and view all the answers

<p>Because it involves several functions that are only superficially related</p> Signup and view all the answers

<p>To eliminate waste products of metabolism and to drain the body of used up and broken down components</p> Signup and view all the answers