Grade 7 English MCQs

Sound Waves Multiple Choice Questions Test 9 Tests pdf Download

Practice science test 9 on sound waves MCQs, grade 7 sound waves and noise multiple choice questions and answers. Sound waves and noise revision test has science worksheets, answer key with choices as 20, 0, 20,000 and 10 of multiple choice questions (MCQ) with sound waves and noise quiz as the measure of decibel starts from for competitive exam prep. Free science study guide to learn 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. 20,000
  4. 10

A

MCQ. Mixture of long and short sounds adds a

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

A

MCQ. Echoes are formed when sound

  1. strikes a wall and reflects back
  2. strikes a wall and is absorbed
  3. hits the eardrum and keeps on hitting
  4. is too loud

A

MCQ. Use of echoes to measure distance is known as

  1. Echo destination
  2. Echolocation
  3. Echo displacement
  4. Echo dictation

B

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

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

C