
Ultrasound
Authored by Lisa Thompson
Science
8th Grade
NGSS covered
Used 1+ times

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15 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Alfie and Genshu are in a submarine. they want to know how deep the ocean is. A sound wave takes 6 seconds to reach the bottom of the ocean and come back and is travelling at 1500m/s. Calculate the depth of the ocean in m.
Tags
NGSS.MS-PS4-2
NGSS.MS-PS4-1
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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.
Tags
NGSS.MS-PS4-2
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
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.
Tags
NGSS.MS-PS4-2
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following animals detects direction by using ultrasound?
Monkey
Bat
Jelly fish
Chicken
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which of the following uses the principle of reflection of sound?
Sonar
Hearing aid
Loudspeaker
Microscope
Tags
NGSS.MS-PS4-2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Which best describes the process by which ultrasounds images are made?
Low-frequency sound waves are generated by a machine and refracted off of objects, creating echoes that are processed into images.
High-frequency sound waves are generated by a machine and refracted off of objects, creating echoes that are processed into images.
High-frequency sound waves are generated by a machine and reflected off of objects, creating echoes that are processed into images.
Low-frequency sound waves are generated by a machine and reflected off of objects, creating echoes that are processed into images.
Tags
NGSS.MS-PS4-2
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What do ultrasounds use?
radio waves
ultraviolet waves
light waves
sound waves
Tags
NGSS.MS-PS4-2
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