14.1 - INTRODUCTION
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Practice Questions
Test your understanding with targeted questions
Define a wave.
💡 Hint: Think about what happens in a pond when you drop a pebble.
What is a mechanical wave?
💡 Hint: Consider sound and water waves.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is a wave primarily used for?
💡 Hint: Think about what happens in a pond when a pebble is dropped.
True or False: Electromagnetic waves require a medium to travel.
💡 Hint: Consider how light from the sun reaches Earth.
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Challenge Problems
Push your limits with advanced challenges
A researcher measures the speed of sound in various media. If the speed of sound in air is 340 m/s and in water is 1486 m/s, calculate the ratio of the speed of sound in water to that in air.
💡 Hint: Use basic division to find the relationship between the two speeds.
Explain how the discovery of electromagnetic waves changed communication technology in the 20th century.
💡 Hint: Think about the devices you use daily.
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Reference links
Supplementary resources to enhance your learning experience.