How does sound travel?
Sound is transmitted by atoms or molecules in a solid, liquid or gas colliding with each other. It is a wave which is created by vibrating objects and propagated through a medium (solid, liquid or gas) from one location to another. Although sound is commonly associated in air, sound will readily travel through many materials that are solid, liquid and gas.
Explain the SOFAR Channel.
The SOFAR Channel is a layer in the ocean where sound is able to travel for long distances. It lies 600-1200m below the sea surface. Mysterious low-frequency sounds, attributed to humpback whales and other baleen whales, are a common occurrence in the channel. Scientists believe humpback whales may dive down to this channel and “sing” to communicate with other humpback whales many kilometers away.
Explain how marine organisms may use sound in the ocean.
Most marine animals rely on sound for survival and depend on unique adaptations that enable them to communicate, protect themselves, locate food, and navigate underwater. Animals change the rate of sound production and the structure of the sounds to send different messages.
Explain how people use sound (sonar) in the ocean.
People can send a signal into the water & part of it will be reflected back if it strikes an object or "target". The distance to the object can be calculated by measuring the time between when the signal is sent out and when the reflected sound, or echo, is received.
Sound is transmitted by atoms or molecules in a solid, liquid or gas colliding with each other. It is a wave which is created by vibrating objects and propagated through a medium (solid, liquid or gas) from one location to another. Although sound is commonly associated in air, sound will readily travel through many materials that are solid, liquid and gas.
Explain the SOFAR Channel.
The SOFAR Channel is a layer in the ocean where sound is able to travel for long distances. It lies 600-1200m below the sea surface. Mysterious low-frequency sounds, attributed to humpback whales and other baleen whales, are a common occurrence in the channel. Scientists believe humpback whales may dive down to this channel and “sing” to communicate with other humpback whales many kilometers away.
Explain how marine organisms may use sound in the ocean.
Most marine animals rely on sound for survival and depend on unique adaptations that enable them to communicate, protect themselves, locate food, and navigate underwater. Animals change the rate of sound production and the structure of the sounds to send different messages.
Explain how people use sound (sonar) in the ocean.
People can send a signal into the water & part of it will be reflected back if it strikes an object or "target". The distance to the object can be calculated by measuring the time between when the signal is sent out and when the reflected sound, or echo, is received.