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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is an echo?
💡 Hint: Think about what happens when you shout in a canyon.
Question 2
Easy
Name one application of sonar.
💡 Hint: Consider exploring the ocean.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is an echo?
- A reflected sound wave
- A type of music
- A loud noise
💡 Hint: Think about the sound returning to you.
Question 2
True or False: An echo can only be heard if the reflection occurs in less than 0.1 seconds.
- True
- False
💡 Hint: Consider how long it takes to notice an echo.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A ship emits a sound pulse underwater that takes 3 seconds to return. If the speed of sound in water is 1500 m/s, how far is the ship from the object it detected?
💡 Hint: Remember to divide the total time by 2 to find the one-way distance.
Question 2
Explain how a bat uses echolocation to find its prey and the relevant scientific principles involved.
💡 Hint: Think about how sound travels in waves and how the timing helps with navigation.
Challenge and get performance evaluation