Ocean acoustics is the screening of sound changes and their character in the ocean.  Sound-pressure waves are formed by vibrating underwater objects, which in turn compress water molecules. And sound waves travel through the ocean. Sound waves emanate in all directions away from the source, like a wave on the surface of the pond. Compressions and decompression associated with sound waves are found in our ears by pressure changes by structures and most man-made sound receptors such as a hydrophone, or underwater microphone. Let's know more about Ocean Acoustic.
	
	
	 
    
    
    
    1. Which of the following are components of Oceanic Acoustics? 
    
    A. Geophony 
    
    B. Biophony 
    
    C. Anthrophony 
    
    D. All of the above 
    
    
    2. How are the components of Oceanic Acoustics? 
    
    A. One 
    
    B. Two 
    
    C. Three 
    
    D. Four 
    
    
    3. Which of the following are the basic components of a sound wave? 
    
    A. Frequency 
    
    B. Wavelength 
    
    C. Amplitude 
    
    D. All of the above 
    
    
    4. Human-generated Oceanic Acoustics  is called: 
    
    A. Geophony 
    
    B. Biophony 
    
    C. Anthrophony  
    
    D. None of these 
    
    
    5. Which instrument is used to detect underwater acoustic signals? 
    
    A. AquaPhoenix 
    
    B. Hydrophone  
    
    C. Multimeter 
    
    D. Barometer 
    
    
    6. Most hydrophones are based on ______________ products. 
    
    A. Seismic 
    
    B. Ceramic 
    
    C. Sonic 
    
    D. None of these 
    
    
    7. The sounds produced by Sea Creatures are called: 
    
    A. Biophony 
    
    B. Anthrophony 
    
    C. Geophony 
    
    D. All of the above 
    
    
    8. According to which report, before the industrial era, geophony and biophony dominated the oceanscape of the oceans? 
    
    A. The Soundscape of Anthropocene Ocean Report 
    
    B. The soundscape of Washington DC 
    
    C. World wildlife forum 
    
    D. None of the above 
    
    
    9. The sounds produced by non-biological natural phenomena are called: 
    
    A. Biophony 
    
    B. Anthrophony 
    
    C. Geophony 
    
    D. Geophobiya 
    
    
    10. Which of the following is the Effect of Anthropony? 
    
    A. To identify hearing indicators generated by marine organisms 
    
    B. To weaken their efficiency in food 
    
    C. To avoid other predators 
    
    D. All of the above 
    
    
    11. Prolonged use of anthrophony may _______________ populations of marine species. 
    
    A. Increase 
    
    B. Reduce 
    
    C. No any change 
    
    D. Stop fertility rate 
    
    
    12. There is an international scientific program to understand the effects of sea creatures and sound on sea creatures is: 
    
    A. IQOE 
    
    B. WWF 
    
    C. OPEC 
    
    D. UNHRC 
    
    
	
	
               
                  
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