10 minutes maximum! Can you do it in 5?

    

Q1-4. This passage is all about sound waves. What are the missing words?

Sound waves are made when objects .
The number of sound waves per second is called the of the sound,
and is measured in .
Sound can be reflected by objects, and we call this a(n) .

5. All waves can be described as longitudinal or transverse waves.

Which row of this table best describes sound waves, and water waves on the surface of the sea?

 sound waves water waves
A
 longitudinal transverse
B
 transverse longitudinal
C
 longitudinal longitudinal
D
 transverse transverse

 

6. Sound can travel through solids, liquids and gases. In which of these does sound travel the fastest?

  • A. solids
  • B. liquids
  • C. gases
  • D. all the same speed

 

 dolphin

7. Which of these gives a typical range of human hearing?

  • A. 200 - 20 000 Hz
  • B. 200 - 2 000 Hz
  • C. 20 - 20 000 Hz
  • D. 20 - 2 000 Hz

8. Sound that is much higher than human hearing is called...

  • A. supersound
  • B. ultrasound
  • C. megasound
  • D. delta sound

9. Animals have ears to detect sounds. Which of these is an electronic device used to detect sound waves and convert them to electrical signals?

  • A. a microphone
  • B. a loudspeaker
  • C. an amplifier
  • D. a power supply
 cats ears

10. The space between the Earth and the Sun is a vacuum.

Which row correctly describes the movement of sound and light through a vacuum?

sound.. light..
A
 cannot pass through a vacuum cannot pass through a vacuum
B
 cannot pass through a vacuum can pass through a vacuum
C
 can pass through a vacuum cannot pass through a vacuum
D
 can pass through a vacuum can pass through a vacuum