Class Activity Review - 8.PS4.3

Radio Waves, Microwaves and Communication

Class Activity Review - 8.PS4.3

Poll

I feel prepared for the SBA.

• Agree

• Disagree

Multiple Choice

Satellites are located in the ionosphere just above the Earth. Based on the diagram, what type of wave do you think is transmitting signals to the satellite?

• microwaves because they can only travel short distances.

• radio waves because they can travel long distances.

• infrared waves because they are used for electronics.

• visible light waves because these are the waves we use to see.

Multiple Choice

Cable television stations use radio wave signals to transmit signals to televisions.

Which of the following is advantage of using radio waves to transmit information to technology?

• The radio wave signal can use rechargeable batteries.

• The radio wave signal can travel long distances.

• The radio wave signal can be activated in a brightly lit environment.

• The radio wave signal can operate only in one component of the system.

Multiple Choice

Radio waves are often used to transmit information over long distance because radio waves are...

• waves with small wavelengths.

• waves with long wavelengths.

• waves with high frequency.

• waves with low amplitudes.

Multiple Choice

Radio waves are converted to an electrical signal to produce sound.

• True

• False

Multiple Choice

Based on the path of the signal, what type of wave is most likely used to transmit the information between Earth and the satellite? Remember: radio waves can travel long distances, microwaves travel short distances.

• Microwave

• Radio wave

• Infrared Wave

• Gamma ray

Multiple Choice

Why are microwaves better than radio waves for cellphone communication?

• Microwaves have a higher frequency than radio waves and can carry more information.

• Microwaves have been around on Earth for a longer time.

• Microwaves are longer than radio waves.

• Microwaves are controlled by the government.

Multiple Choice

What does radio communication, satellite communication, and cellphone communication all have in common?

• They all use radio or microwaves to transmit and receive information through wave signals.

• They all use radio waves only.

• They all use microwaves only.

• They all use the entire EM spectrum to transmit and receive information through wave signals.

Multiple Choice

Cellphones use microwaves to transmit information to other cellphones. What is ONE limitation of using a microwave signal?

• Microwaves can travel far distances.

• Microwaves must use satellites.

• Microwaves cannot travel very far.

• Radio waves require microwaves.

Multiple Choice

Satellites can use both microwaves and radio waves to transmit information?

• True

• False

Poll

I feel prepared for the SBA.

• Agree

• Disagree