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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 the sound you hear after shouting in a canyon.
Question 2
Easy
Name one use of sonar.
💡 Hint: Consider how submarines navigate.
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 happens to sound waves when they collide with a reflective surface?
- They are absorbed
- They are refracted
- They are reflected
💡 Hint: Think about what happens when you shout in the mountains.
Question 2
True or False: An echo is formed only when sound is absorbed.
- True
- False
💡 Hint: Consider why you hear your voice bounce back at you.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A sound wave travels to a wall 300 meters away and reflects back. What is the total distance traveled by the sound wave?
💡 Hint: Consider the journey to the wall and back.
Question 2
If a bat emits a sound wave that travels at 340 m/s and you hear the echo 2 seconds later, how far is the wall?
💡 Hint: Think about how the total time is for the sound to go to the wall and back.
Challenge and get performance evaluation