Practice Case Study (9.3) - Waves and Sound - IB 10 Sciences (Group 4)- Physics

Practise this section

9 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the Doppler Effect?
Show hintHide hint
Think about how sound changes as something moves towards or away from you.
Question 2.
What happens to the frequency of sound as an ambulance approaches?
Show hintHide hint
Recall how sirens sound when approaching.
3Question 3.
What is the main consequence of the Doppler Effect?
- Change in amplitude
- Change in frequency
- Change in medium
Show hintHide hint
Remember what happens to sound pitch as an emergency vehicle approaches.
4Question 4.
True or False: The Doppler Effect only applies to sound waves.
- True
- False
Show hintHide hint
Consider examples beyond just sound.
Question 5.
An observer notices a train whistle sounding at 600 Hz as it approaches and 450 Hz as it moves away. Calculate the speed of the train if the speed of sound in air is 340 m/s.
Show hintHide hint
Consider setting up two equations for the two observed frequencies.
Question 6.
How would you explain the Doppler Effect to a peer unfamiliar with concepts of sound? Write a brief paragraph to summarize.
Show hintHide hint
Use everyday examples to clarify your explanation.

5 more questions in this section. Enroll free to practise them all.