Using Sound

Dolphins send ultrasound waves with frequencies up to ________ Hz.

• 150,000

• 130,000

• 160,000

• 140,000

Tags

NGSS.MS-PS4-1

What are two forms of ultrasound technology used to observe things that cannot be seen directly?

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Today sonar is used for: (choose all that apply)

• to map the ocean floor

• to track schools of fish

• determine the depth of water

• to locate sunken ships

• to find other objects in the ocean

Tags

NGSS.MS-PS4-2

Draw a picture of a ship utilizing a sonar system.

Tags

NGSS.MS-PS4-2

__________ _______ devices send ultrasound waves into the body to detect reflected sound waves.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Different parts of the body reflect sound differently

• True

• False

_________ can show pictures/videos of developing babies and if more than one baby will be born.

It takes 8.20 seconds for a sound wave to travel to the bottom of the ocean and back to the surface. If the speed of sound in salt water is 1,530 m/s, how deep is the sea at this point? (Remember to divide your answer by 2)

Tags

NGSS.MS-PS3-4

Sound needs a medium.

• True

• False

Tags

NGSS.MS-PS4-2

Areas of increased pressure on a sound wave are known as a ----

• Rarefaction

• Compression

• Frequency

• Amplitude

Tags

NGSS.MS-PS4-1