Class 9 Exam > Class 9 Videos > SONAR
SONAR Video Lecture - Class 9
FAQs on SONAR Video Lecture - Class 9
| 1. What is SONAR and how does it work? |  |
Ans. SONAR stands for Sound Navigation And Ranging. It is a technique used for detecting and locating objects underwater by emitting sound waves and analyzing their echoes. When the sound waves hit an object, they bounce back and are detected by the SONAR system, which then calculates the distance and direction of the object.
| 2. What are the applications of SONAR? | |
Ans. SONAR has various applications, including underwater navigation, mapping the ocean floor, locating underwater objects such as submarines and shipwrecks, and studying marine life. It is also used in fishing to detect fish schools and determine their depth.
| 3. What are the advantages of using SONAR? | |
Ans. SONAR offers several advantages. Firstly, it allows us to explore and understand the underwater environment, which is otherwise difficult to access. It helps in navigation and ensures the safety of underwater vehicles and vessels. SONAR also aids in scientific research, resource exploration, and military operations.
| 4. How is SONAR different from RADAR? | |
Ans. SONAR and RADAR are both detection systems, but they operate in different mediums. SONAR works in water by using sound waves, while RADAR operates in the air using radio waves. Additionally, SONAR has a shorter range compared to RADAR due to the different properties of sound and radio waves.
| 5. Can SONAR be used in shallow water? | |
Ans. Yes, SONAR can be used in shallow water. In fact, it is often used in coastal areas and shallow bodies of water to survey the seabed, locate underwater hazards, and study marine ecosystems. SONAR systems can be adjusted to work effectively in various water depths and provide detailed information about shallow-water environments.
Text Transcript from Video
Sona Sona stands for sound navigation
and ranging it is a device which uses
ultrasonic waves to measure the distance
direction and speed of underwater
objects and helps Mariners to
investigate the nature size and location
of the object so that potential threat
to the vessel is identified and overcome
how does it work
sonar has a transmitter and a receiver
which are installed at the bottom of the
ship the ultrasonic waves transmitted by
transmitter travel underwater and get
reflected back from obstacles the
detector receives the signal and
converts it to electric signal a
computer forms image of the obstacle and
displays it on a monitor it also
calculates distance of the object using
this formula distance is equal to speed
into time upon to speed is equal to
speed of sound in saline water equal to
1530 meters per second this method is
called echo ranging the sonar technique
is installed in every ship to determine
the death of the sea and to locate
underwater hills valleys submarines
icebergs and sunken ships etc to avoid a
disaster
you
and ranging it is a device which uses
ultrasonic waves to measure the distance
direction and speed of underwater
objects and helps Mariners to
investigate the nature size and location
of the object so that potential threat
to the vessel is identified and overcome
how does it work
sonar has a transmitter and a receiver
which are installed at the bottom of the
ship the ultrasonic waves transmitted by
transmitter travel underwater and get
reflected back from obstacles the
detector receives the signal and
converts it to electric signal a
computer forms image of the obstacle and
displays it on a monitor it also
calculates distance of the object using
this formula distance is equal to speed
into time upon to speed is equal to
speed of sound in saline water equal to
1530 meters per second this method is
called echo ranging the sonar technique
is installed in every ship to determine
the death of the sea and to locate
underwater hills valleys submarines
icebergs and sunken ships etc to avoid a
disaster
you
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Nov 16, 2024 Last updated |
SONAR for Class 92024 is part of Class 9 preparation. The notes and questions for SONAR
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