Ultrasound and infrasound

You cannot hear ultrasound because it is:

• too loud
• too quiet
• high frequency
• low frequency

Tags

NGSS.HS-PS4-1

What type of frequency does sonar use?

• High frequency
• Low frequency
• Medium frequency
• Any frequency

Sound travels at 1400m/s in water. If a ship sends a sonar signal to map the bottom of the ocean and it returns after 2 seconds, how deep is the ocean?

• 700m
• 1400m
• 2800m
• 6000m

What is ultrasound mostly used for ?

• Shipping
• Military
• Medical use
• Firefighter

Tags

NGSS.HS-PS4-1

Infrasound is used in a variety of applications including sonar and ultrasound imaging.

• True
• False

 The sonar that boats use for ultrasound is to determine the distance that an object is underwater.

• True
• False

What are two ways that an ultrasound is used?

• transverse waves and longitudinal waves
• hertz and meters
• sonar and ultrasound imaging
• music instruments and amplify the sound

You can hear ultrasound

• True
• False

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-5

What frequency range represent the human hearing capacity

• Below 20 Hz
• Between 20 Hz and 20 000 Hz
• Between 20 000Hz and 40 000 Hz
• Above 20 000 Hz

Which is a transverse wave?

• P wave 
• S wave
• Ultrasound
• Infrasound