Sound Waves Multiple Choice Questions 9 PDF Download

Practice sound waves MCQs, grade 7 online science test 9, sound waves and noise multiple choice questions and answers. Sound waves and noise revision test has science worksheets, helping answer key with choices as 20, 0, 20000 and 10 of multiple choice questions (MCQ) with sound waves and noise quiz as measure of decibel starts from for competitive exam prep, viva interview questions. Free science study guide to practice sound waves and noise quiz to attempt multiple choice questions based test.

MCQs on Sound Waves Quiz PDF Download Worksheets 9

MCQ. Measure of decibel starts from

  1. 0
  2. 20
  3. 20000
  4. 10


MCQ. The mixture of high and low sounds is called a

  1. rhythm
  2. bass effect
  3. beat effect
  4. wow effect


MCQ. Echoes are formed when sound

  1. strikes a wall and reflects back
  2. strikes a wall and is absorbed
  3. hits the eardrum repeatedly
  4. breaks


MCQ. The use of echo to measure distance is known as

  1. echo destination
  2. echolocation
  3. echo displacement
  4. echo dictation


MCQ. In a flute, the length of air cutting through the holes is changed by

  1. changing length
  2. changing valves
  3. fingers
  4. sealers