Question

Discuss the three methods of communications in areas where oral communication is not reliable.

a. Carrier pigeons, semaphore flags, and smoke signals
b. Handwritten letters, telegraph, and Morse code
c. Satellite phones, emails, and video calls
d. Semaphore flags, radio signals, and signal mirrors

Answer 1

Astronauts use satellite phones, emails, and video calls for communication in space as sound cannot travel in the vacuum. These methods rely on advanced technology like communication satellites and are not impeded by the lack of atmospheric transmission.

Step-by-step explanation:

Astronauts in space cannot rely on oral communication due to the vacuum of space, where sound cannot travel. The following are alternative communication methods they utilize:

• Satellite phones - These devices connect via communication satellites, allowing for voice transmission across vast distances, including into space.
• Emails - Utilizing satellites and space station's equipment, astronauts can send and receive electronic messages.
• Video calls - Similar to emails, video communication is carried out through satellite technology, providing real-time visual and audio interaction between astronauts and mission control.

To summarize, satellite phones, emails, and video calls are critical in allowing astronauts to connect without depending on sound waves, which are ineffective in the vacuum of space.