10 Questions
What is a simple machine and how does it work?
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.
What are the six classical simple machines defined by Renaissance scientists?
The six classical simple machines defined by Renaissance scientists are lever, wheel and axle, pulley, inclined plane, wedge, and screw.
How does a simple machine increase the output force?
A simple machine increases the output force at the cost of a proportional decrease in the distance moved by the load.
What is the ratio of the output to the applied force called?
The ratio of the output to the applied force is called the mechanical advantage.
What are simple machines considered to be in relation to more complicated machines?
Simple machines are considered to be the elementary 'building blocks' of which all more complicated machines are composed.
Which of the following is the primary function of the excretory system?
To maintain internal chemical homeostasis
What is the main way in which waste products are eliminated from the body in mammals?
Through all of the above
In humans and other amniotes, which organs are considered part of the excretory system?
Only the organs specifically used for excretion
Why is the term 'excretory system' not usually used in formal classifications of anatomy or function?
Because it involves several functions that are only superficially related
What is the dual function of excretory systems?
To eliminate waste products of metabolism and to drain the body of used up and broken down components
Test your knowledge of simple machines with this quiz! Learn about the six classical simple machines and their functions. Challenge yourself to identify each machine based on descriptions and images. Expand your understanding of how these devices change force direction and magnitude.
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