Worksheets[SC F2] 10.3 Application of Reflection of Sound Waves
Total questions: 12
Worksheet time: 6mins
Which of the following uses the principle of reflection of sound?
Sonar
Hearing aid
Loudspeaker
Microscope
Which of the following is the hearing range of human?
16 Hz to 12 000 Hz
20 Hz to 20 000 Hz
55 Hz to 33 500 Hz
2 000 Hz to 110 000 Hz
Dolphins warn each other of the presence of predator using ultrasound. We cannot hear the ultrasound because
the sound is too low.
human can only hear sound of frequency range from 20 Hz to 20 000 Hz.
the sound was absorbed by water.
the sound produce multiple echo until our ears cannot capture it.
What is an echo?
The vibrations of sound.
The reflected sound waves.
The changes of sound frequency.
The sound waves which are absorbed.
Which of the following statements about ultrasound is true?
Ultrasound can only be heard by human being.
The frequency of sound waves more than 20 000 Hz.
Ultrasound is similar to Doppler effect.
Ultrasound has low frequency sound waves.
Which of the following animals detects direction by using ultrasound?
Monkey
Bat
Jelly fish
Chicken
What is the importance of sonar for submarine navigation?
Helps in weather forecast.
Helps the submarine to slow down its speed.
Helps the submarine to move faster.
Helps to detect object under the surface of water.
Which of the following is used to listen to the heartbeat of a patient?
Stethoscope
Microphone
Microscope
Hearing aid
Which of the following device was not invented to overcome the hearing limitation of human?
Stethoscope
Microphone
Megaphone
Periscope
Echo is a reflected sound that takes time to reach the ear of the listener. The phenomena of echo can be found in the following areas except
cave
tunnel
empty room
outdoor playground
What is the purpose of transmitting the sound wave?
Giving a warning signal
Detecting the distance
Delivering information
Determine the rock size
What are echoes?
Sounds that are _______ from a hard surface.
absorbed
reflected
propagate
