5. Ultrasound

Sound waves are

• Surface waves
• Longitudinal waves
• transverse waves
• all could be possible

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Sonar is used for

• Ultrasound
• How to tell how deep things are in water
• untrasonography
• all of the above

Tags

NGSS.MS-PS4-2

You can hear ultrasound

• True
• False

Tags

NGSS.HS-PS4-1

What are two ways that an ultrasound is used?

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

Tags

NGSS.MS-PS4-2

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

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

You cannot hear ultrasound because it is:

• Too quiet
• Too loud
• Frequency is too high
• Frequency is too low

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

What sort of wave is ultrasound?

• Longitudinal
• Transverse
• Electromagnetic

Tags

NGSS.HS-PS4-5

In a longitudinal wave:

• Vibrations are parallel to the direction of travel
• Vibrations are at 45° to the direction of travel
• Vibrations are at 90° to the direction of travel

Why are X-rays NOT used to look at a baby in the womb?

• X-rays go straight through the body
• X-rays are stopped by the mother's body
• X-rays can damage living cells

Tags

NGSS.MS-LS1-5