Which mysterious sound was recorded in the Pacific Ocean in 1997 and is one of the loudest unexplained noises ever captured?
The Hum
The Bloop
The Upsweep
The Sky Trumpets
The "Taos Hum" is a low-frequency sound heard by residents in which country?
What name is given to the eerie trumpet-like sounds reported in the sky around the world?
Sky Trumpets
Heaven's Call
Angel Echo
Sky Whispers
The "Upsweep" is an unexplained sound detected by underwater listening devices in which ocean?
Atlantic Ocean
Indian Ocean
Pacific Ocean
Arctic Ocean
Which mysterious underwater sound was named for its fast-rising frequency pattern?
The "Hum phenomenon" is most commonly described as?
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High-pitched ringing
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Constant low-frequency droning
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Rhythmic thumping
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Loud explosive noise
Which unexplained sound was recorded near Antarctica and is suspected by some to be caused by ice activity?
Upsweep
Bloop
Julia
Slow Down
The "Forest Grove Sound" was a strange noise reported in which US state in 2016?
What is unusual about the "Lake Seneca Booms" in New York?
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Can be heard only underwater
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Last for exactly 10 seconds
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Occur only during winter
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Happen without earthquakes
The "Skyquake" phenomenon refers to?
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Rumbling noises in the upper atmosphere
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Thunder with no lightning
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Sonic booms from military jets
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Earthquake aftershocks
