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Cambridge Secondary (7-9). Stage 7. Science. Learner's Book - Unit 6: Earth physics - Question 26

Cambridge Secondary (7-9) · Unit 6: Earth physics

Question 26

Which statement describes what happens to a sound to make an echo?

Write the letter.
  1. The pitch of the sound increases.
  2. The pitch of the sound decreases.
  3. The sound gets reflected.
  4. The sound gets louder.
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