Waves

We communicate using radio waves in cell phones, satellites and radio towers which has increased the distance in which we are able to communicate.

• Only sometimes

• Yes, we have!

• Nope, this has never happened.

• Nah…

The speed of a sound wave in solids is

• Very fast

• Very slow

• Medium speed

• Sound waves can’t travel through solids!

Whales and dolphins use _____________ to orient themselves and find food.

• Biomimicry

• Echolocation

• Binary codes

• Cell phones

The speed of sound waves in gas is

• Slow…very, very slow…

• Fast…very, very fast…

• Medium speed

• Sound can’t travel through gas!

What do computers use to transmit information?

• Morse Code

• Binary code

• Echolocation

• Cell Phones

Sound waves travel in all directions.

• It depends on the weather.

• They sure can!

• They absolutely cannot.

• Sound waves do not travel unless it’s summer.

Why can’t sound travel through space?

• There are many mediums.

• There is no medium.

• They need a rocket ship.

• It can!

_____________ works by bouncing sound waves off an object and measuring the time the echos take to return.

• Vacuums

• Frequency

• Amplitude

• Sonar

When sound is traveling in a medium speed, it is traveling through what?

• A solid

• A liquid

• A gas

• SOUND CAN’T TRAVEL!

An echo is an example of a sound wave being ____________.

• Refracted

• Reflected

• Absorbed

• Ignored