SOUND WAVE PART 2

What are some application of Sound waves?

Communication using sound Waves

Human use speech to communicate.

Dogs bark to communicate.

Humans and dogs both use sound to communicate.

How to Communicate People in long distances?

Communication using Sound Waves and Radio

Rearrange the order

Sound Wave and Radio

(Posted in the google classroom for practice)

https://wordwall.net/resource/85996177

Information from Radios can be stored in 2 different ways

Analog Signal

An analog signal carries information by copying an original sound.

• It travels through the air continuously

• It can pick up unwanted information, which is heard as "noise".
  
  

Information from Radios can be stored in 2 different ways

Digital Signal

A digital signal carries information by changing original sounds into numbers.

• It turns sound waves into a stream of zeroes and ones.

• It makes sound easier to store, with faster transmission and less noise.
  
  

ANALOG AND DIGITAL SIGNAL

Classify the correct descriptions of analog and digital signal (posted in the google classroom for practice)

https://wordwall.net/resource/85996177

​Headphones and other devices make use of sound waves to block out and cancel noise.

Use of Sound Waves to Cancel Noise

How sound waves are cancelled?

Sound waves are canceled by creating waves that with unwanted sound waves.

• When sound waves of the same meet where the crests of one wave overlap with the trough of another wave, the waves cancel out each other. Using Sound interfere amplitude

Multiple Choice

Waves with similar ____________ are created to interfere with unwanted sound waves.

• amplitude

• crest

• trough

Multiple Choice

The___________ of one wave overlap with the troughs of the other wave, causing the two waves to cancel out each other.

• amplitude

• crest

• trough