Question: Can You Hear Someone Scream Underwater?

Is there sound on the moon?

However, the Moon is in space, and space is mostly a vacuum (there are always some atoms floating around, but they are VERY far apart and don’t interact with one another).

Thus there is no sound on the Moon..

What do underwater speakers sound like?

According to Clark Synthesis President Bill Phillips, a quality underwater speaker is more like a fine wooden instrument such as a cello or violin. The sound radiates off the entire surface area of the speaker rather than from a focused point. The volume of water you can cover with a speaker varies.

Can a sperm whale kill you with sound?

Sperm whales are the loudest mammals on the planet, with vocalizations reaching an astonishing 230 decibels. … At around 150 decibels your eardrums will burst, and the threshold for death is estimated to be in the range of 180 to 200.

Can humans talk underwater?

A new underwater communications device from Casio, called the Logosease, now allows you to have a conversation with your scuba pals. By attaching the pocket-sized underwater two-way radio to your mask strap, and with simple operation, you can start communicating from 45ft away, and a depth of 130ft.

How do mermaids talk underwater?

For mermaids to speak normally underwater, they have to have incredibly powerful voice boxes. It’s tough to judge exactly how good a mermaid’s sense of smell is. Plenty of fish hunt through smell, but usually it’s a long-distance tool.

How far inland can you hear the ocean?

When the tides coming in and its a bit windy we can hear the ocean where we live, 100 metres away. Its not a beach with surf- due to the Great Barrier Reef, and the shallow bay.

Can you break the speed of sound underwater?

Answers and Replies. There is no sound barrier in space. In fresh water at 20 C, the speed of sound is ~1482 m/s; tough to beat in a medium that’s about 1000 times as dense as air. Certainly a normal sized object can in principle pass through a body of water faster than the speed of sound in the water.

What is the loudest thing in the ocean?

A sea creature less than 2 inches long is one of the ocean’s loudest creatures, and research has found that it may only get louder as a result of the oceans getting warmer. The “snapping shrimp” – also known as the pistol shrimp – is notable for its massive claw, which is about half the size of its entire body.

What is the loudest sound on earth?

The Krakatoa volcanic eruption: Not only did it cause serious damage to the island, the eruption of Krakatoa in 1883 created the loudest sound ever reported at 180 dB.

Can a loud sound kill you?

The general consensus is that a loud enough sound could cause an air embolism in your lungs, which then travels to your heart and kills you. Alternatively, your lungs might simply burst from the increased air pressure. … High-intensity ultrasonic sound (generally anything above 20KHz) can cause physical damage.

Can humans hear dolphins underwater?

Scientists use a device called a hydrophone, which is an underwater microphone, to pick up underwater sounds and reproduce them clearly for humans to hear. A hydrophone in the ocean can pick up sounds from whales and dolphins as much as it can pick up sounds from passing boats.

What frequency can kill you?

The most dangerous frequency is at the median alpha-rhythm frequencies of the brain: 7 hz. This is also the resonant frequency of the body’s organs.

Can you hear someone speak underwater?

The frequency does not change and sound travels faster in water than in air. …

Why is it hard to talk underwater?

The answer is that sound couples poorly from air to water. … Your lungs provide the burst of air, and your vibrating vocal cords and mouth imprint the appropriate sound waveform on the air. In order for someone underwater to hear you, the sound waves have to go from the air in your mouth into the water surrounding you.

Is sound louder underwater?

Sound travels faster in water compared with air because water particles are packed in more densely. Thus, the energy the sound waves carry is transported faster. This should make the sound appear louder.

Why can’t humans hear underwater?

Sound that’s generated underwater stays underwater; very little sound passes from water to air. When your head is out of the water and you listen to a sound made underwater, you don’t hear much.

Can you hear better in water?

On land, sound travels through air conduction. This means that sound waves travel through the air, causing your eardrum to vibrate. … Researchers have determined that bone conduction allows us to hear sounds underwater that are much higher in pitch than sounds we hear on land.