RADIO WAVES

Which carries signals from radio, TV, call phones, and internet satellites?

• light waves

• sound waves

• radio waves

Which is the part of the device that sends out radio signals?

• receiver

• transmitter

• antenna

Which is the part of a device that takes in the radio waves?

• transmitter

• antenna

• receiver

Which converts the radio waves into a usable message?

• receiver

• antenna

• transmitter

When we make a call, the phone converts our voice into ___________________.

• radio waves

• light waves

• water waves

Which signals are easier to decode and interpret?

• digital signal

• analog signal

• both digital and analog

Which signals send information in a continuous stream?

• analog

• digital

• both analog and digital

Which signals use clear-cut values such as numbers or digits?

• analog

• digital

• radio

Who invented the wireless telegraph that sent messages using radio waves?

• Macroni

• Marconi

• Macorni

Which is an ancient form of communication?

• telephones

• smoke signals

• messenger