Q3W10 Advances in Communication Tech

What is a telephone?

• A device that sends and receives messages through the internet

• A device that transmits sound over a distance using wires

• A device that sends images over radio waves

• A system for transmitting signals via satellites

What is a radio?

• A device that transmits sound and video over a distance

• A device that converts written messages into Morse code

• A device that transmits sound via electromagnetic waves

• A tool for tracking satellite movement

What is a cell phone?

• A telephone that uses wires for communication

• A portable device that transmits signals via cellular towers

• A satellite used for military communication

• A landline phone capable of video transmission

What are communication satellites used for?

• Mapping Earth's surface

• Sending and receiving communication signals from Earth

• Converting sound into electromagnetic signals

• Powering cell towers on the ground

What is an uplink in communication technology?

• The process of sending data from a satellite to a ground station

• The process of sending data from a ground station to a satellite

• The signal transfer from one phone to another

• The link between two cell towers

What is a downlink in communication technology?

• Sending signals from a satellite to a ground station

• Transmitting data between two satellites

• A failure in satellite communication

• Receiving data on a cell phone directly from a satellite

What invention did Hedy Lamarr and George Antheil patent that contributed to modern cell phone technology?

• The first cell tower

• A system for secure wireless communication

• A satellite for global positioning

• The original telephone

What is required for a satellite to communicate with devices on Earth?

• A large network of connected cell phones

• Both uplink and downlink signals

• A direct connection to a telephone line

• A signal booster attached to every device

How do cell phones transfer signals to and from satellites?

• Radio waves are sent directly to satellites from the cell phone

• Signals travel from the cell phone to a cell tower, then to a satellite, and back

• Satellites receive signals only from landlines

• Radio waves are transmitted through a cable to reach satellites

Which of the following is NOT part of the process of transmitting a cell phone call?

• Sending a signal to a cell tower

• Receiving data from a satellite

• Storing the call data permanently on the satellite

• Returning the signal to the receiver's cell phone