Systems and System Models

What is the boundary of a cell phone?

• The screen

• The case

• The battery

• The signal

Which of these is an input for a plant?

• Oxygen

• Sunlight

• Sugar

• Fruit

Which of these is an output of a human body system?

• Oxygen

• Carbon dioxide

• Water (drink)

• Food

What do components of a system do?

• Separate the system from the environment

• Work together to carry out functions

• Provide energy

• Act as outputs

A group of parts that work together to do a job, perform a function, or produce a result is called a

• function

• system

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