Types of Systems
Simple Machines
Work, Energy Force and Efficiency
Inputs and Outputs
Evolution
100

This occurs when there are components or processes that work together to perform a goal or meet a need.

What is a system?

100

Can be used to keep a door from slamming in case of strong wind.

What is a wedge?

100

W = fxd

What is the equation to calculating work?

100

What you will put into a system in order to get the desired outcome.

What is input?

100
Refers to a system that is developing or improving over time.

What is evolution?

200

This system is created to ensure that people can get around easily.

What are mechanical systems?

200

It is a flat surface that is on an angle so that one end is higher than the other.

What is an inclined plane?

200

Fiction and gravity.

What are the two types of forces?


200

In this example the bread warms up from the heat and comes out toasted.

What is an example of output?

200

Instead of sending a letter, or picking up a phone to call, people can send an email or text.

Why have cell phone evolved?

300

This system has many organs that work together to make sure it can survive.

What is the Body System?

300

They usually have one or two parts that when combined use less force to work.

What are simple machines?

300

This is needed to apply force.

What is energy?

300

The purpose of this system is to listen to music.

What are speakerss?

300

Because many people are always on the go and need to send emails, order things and communicate throughout the day.

Why did smart phones evolve?
400

A school is an example.

What is a social system?


400

A screw has more force when these are closer together.

What are threads?

400
Efficiency = useful output energy/total input energy
What is the equation for calculating efficiency?
400

The purpose of this system has evolved over time.

What is a cell phone?

400

When the parts of a machine continuosly rub together and wear each other down and create heat?

What is friction?

500

Phyiscal Sytems and Social Systems.

What are the two major types of systems that exist?

500

The closer this is to the axle the more force is needed to turn.

What is the handle?
500

70% efficient.

How efficient was the TV in the worksheet?
500

I ran out of things to say so this is a BONUS!!

Blah

500

This ensures that the moving parts of a car don't rub together and instead glide off of each other?

What is engine oil (lubricant)?
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