Why is the size of jet engines increasing? An entertaining video lesson describes the efficiency of jet engines. The narrator describes the poor design of an engine that is too small or too big and explains why it is more efficient to settle somewhere in the middle. 

Concepts

engines, fuel efficiency, propulsion, kinetic energy, speed, power

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Additional Tags

science

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Instructional Ideas

• Create a guided notes document for pupils to complete as they view the video
• Follow the video with a lab investigation on thrust

Classroom Considerations

• Expects a fundamental understanding of Newton's Laws of Motion

• This video is hosted on YouTube

Pros

• Uses analogies to add clarity to the explanations
• Simple illustrations enhance the concepts

Cons

• None