Would the refraction of sound be possible if the speed of sound were unaffected by wind, temperature, and other conditions? No, Refraction is the result of changing wave speeds, where part of a wave travels at a different speed than other parts.

From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer. There are two basic types of waves: mechanical and electromagnetic.

Are beats the result of interference, of the Doppler effect, or of both? Two sound waves of the same frequency can interfere, but, in order to roduce beats, the two sound waves must have different frequencies. A piano tuner using a 264 Hz tuning fork hear 4 beats per second.

Marchers at the end of a long parade will be out of step with marchers nearer the band because time is required for the sound of the band to reach the marchers at the end of a parade. They will step to the delayed beat they hear.

A forced vibration at an objects natural frequency creates resonance. Why can a tuning fork or bell be set into resonance, while tissue paper cannot? Tissue paper does not have a natural frequency. Forced vibration at a natural frequency will create resonance.

Speed of light is faster than sound. Why do you not hear the sound of distant fireworks until after you see them? Light travels a million times faster than sound, hence the delay between what you see and what you hear. Sound does not travel through a vaccuum.

solids

At room temperature, a wave will travel less fast as compared to wave in a hot source. Thus, we can conclude that in hot source of water would a wave travel the fastest.

vacuum

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.

In fact, sound waves travel over 17 times faster through steel than through air. Sound waves travel over four times faster in water than it would in air.

It is true that sound wave travel faster in water than in air, but the sound waves produce under water doesn’t vibrate the ossicles bones in our inner ear. It directly vibrate our skull bone making us not to clearly hear what other people are talking underwater.

There are only two types of waves that could be used as a means of transferring signals in underwater com- munication systems, sonar waves and electromagnetic waves; in some cases, both of these waves are used together [4,8].

A transducer is attached to the diver’s face mask, which converts his or her voice into an ultrasound signal. A fellow diver has an ultrasound receiver, which accepts the signal and converts it back to a sound that the diver can hear, allowing for communication.

When underwater, communication can often mean the difference between a successful dive and serious danger. Divers who find themselves with empty air tanks or malfunctioning equipment need to be able to tell their buddies that they require assistance.

Benefits of Scuba Diving

• Increases emotional well being.
• Improves blood circulation.
• Helps to relieve stress.
• Improves concentration capacity.
• Reduces blood pressure.
• Increases strength and flexibility of your muscles.
• Visit paradisiacal places.
• Healing effects of salty water and sun on skin and bones.

Scuba divers have their very own sign language, it’s called ‘scubasign’!

Scuba skills are skills required to dive safely using self-contained underwater breathing apparatuses (scuba set).

12 Essential Scuba Drills To Master

• Swimming – This is a very basic but important skill to master.
• Equipment familiarization – Scuba diving requires specialized equipment.
• Pre-dive checks – Going through your checklist before jumping in the water can save a dive, and may save lives.

The only thing for certain is that the optimum breathing strategy when scuba diving is deep slow breathing. You need to inhale slowly and then also exhale slowly without holding your breath. Develop a pattern that you are comfortable with and that works for your current work load.

Improving the Skill This skill can be improved by snorkeling and scuba diving. Only teens and above can scuba dive. Children can go snorkeling, but not scuba diving, up to level 3, but the skill is hidden until the child becomes a teen.

A mermaid cannot use or buy scuba diving equipment. They also will not snorkel or scuba dive, apparently it’s a taboo subject. They can, however, access the free dive option and stay underwater for what seems like a much longer time than regular sims.