Question 3Using your answer to the previous question, explain why geostationary satellites are less useful for video calls.

Communication Satellites by Carmen Atwell Today, it is hard to imagine a life where people are not surfing the Internet, watching television, or using their cell phones to call or send text messages. However, none of these activities were possible before the existence of communication satellites. These satellites have made it possible to watch television and use devices like laptops, tablets, cell phones, and more. Before the use of satellites, transmissions were difficult or impossible for long distances. Signals, which travel in straight lines, could not bend around Earth to reach a destination far away. Because satellites orbit Earth, signals are sent immediately into space and are then redirected to another satellite or are sent directly to their destination. Unlike other man-made satellites, communication satellites remain stationary, which allows them to transmit signals in that area. The area to which the communication satellite can transmit signals is called a satellite's footprint. Communication satellites are important for remote areas that do not have access to traditional landlines for telephone or Internet services. These satellites provide faster Internet and access to information from all around the world. Communication satellites help transport telephone signals, data, or television transmissions to almost anywhere. These satellites are used for things like making an international phone call or enabling access to over 150 channels on television. People can access news from around the world or watch videos in an instant because of the power of these satellites. In a way, communication satellites are like Atlas carrying the weight of the world on their shoulders. Without them, the world would cease to function, and the easiest and best forms of communication would end completely. Can you imagine life without communication? I surely cannot. As a child, I often saw my grandparents and family communicating with each other through letters. However, writing and delivering letters was a slow and tedious process. Gradually, people began to use electronic devices like the television and radio for entertainment. I often wondered how those sounds and pictures appeared on the electronic devices. It was later that I understood that a special type of satellite launched into space made it possible to listen to the radio or watch TV. Indeed, communication satellites have become an essential part of our lives. 5 Read the sentence from the passage. "Communication satellites help transport telephone signals, data, or television transmissions to almost anywhere." What is the meaning of the word transmissions? A. images B. rays C. devices D. broadcasts

Satellites for Transmission

The time period of a geostationary satellite is

Which Satellite is used by Doordarshan for providing Television Services all over India?

Highlight Instance of Guided Transmission Mediaa.Communication via satellites in geostationary or low Earth orbit. Used for television broadcasting, long-distance communication, and global positioning systems (GPS).b.Fiber Optic Cable:Uses thin strands of glass or plastic to transmit data using light signals. Offers high bandwidth and is immune to electromagneticc.Similar to fiber optic cable but without the protective covering. Used in short-distance, high-speed data connections, such as within data centers.d.NFC (Near Field Communication): Short-range wireless communication technology used for contactless payments, data exchange between devices in close proximity.e.Coaxial Cable: Consists of a central conductor surrounded by an insulating layer, a metallic shield, and an outer insulating layer.f.Similar to fiber optic cable but without the protective covering. Used in short-distance, high-speed data connections, such as within data centersg.Bluetooth:Short-range wireless technology used for connecting devices such as smartphones, laptops, and peripheralsh.Uses infrared light for short-range communication. Often used in remote controls, some short-range data transfer applications, and IrDA (Infrared Data Association) communicationi. Electromagnetic waves used for wireless communication. Commonly used in radio and television broadcasting, as well as Wi-Fi networks.j.Twisted Pair Cable: Consists of pairs of insulated copper wires twisted together. Commonly used in telephone lines and local area networks (LANs).k.Electromagnetic waves with higher frequencies than radio waves. Used for point-to-point communication over long distances, such as in microwave communication towers.