1. 1.) How do animals and people use sound?
Unit: Sound and Light
Lesson 5: Using Sound
Essential Questions:
1.) How do animals and people use sound?

2. Think about it…
What happens when you shout into a canyon or a cave?

3. Animals and Sound
The use of reflected Echolocation sound waves to determine distance or location Sound waves with a Ultrasound waves frequency above the normal human range

4. Bats and dolphins send out sound waves
Bats and dolphins send out sound waves. The waves reflect off objects and return to the animals’ ears. The time it takes for the waves to return tells the animals how far their prey are.

5. People and Sound
A system that uses Sonar reflected sound waves to detect and locate objects underwater

6. A sonar device sends waves that travel through the water
A sonar device sends waves that travel through the water. When they hit the object, they reflect.

7. A picture created using Sonogram reflected sound waves
Sonograms can be used to make images of organs that do not show up well on x-rays.