The Human Body: An Incredible Machine

What type of energy do cars use to work?

• Chemical energy from gasoline

• Electrical energy from batteries

• Solar energy from the sun

• Mechanical energy from engines

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Applying

The human body changes about ___% of the chemical energy in food into motion.

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Analyzing

Explain how the human body is similar to a machine.

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Analyzing

Which part of the car is responsible for changing chemical energy into motion and heat?

• Engine

• Wheels

• Transmission

• Brakes

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Applying

Discuss why the human body is considered an incredible machine compared to a car.

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Evaluating