Sound and Pressure Basics

<p>Frequency (A)</p> Signup and view all the answers

<p>The wave completes 500 oscillations in one second. (D)</p> Signup and view all the answers

<p>The sound is very loud. (B)</p> Signup and view all the answers

<p>Wave A will sound louder than Wave B. (A)</p> Signup and view all the answers

<p>The quiet, low-pitched sound would have a lower amplitude and lower frequency. (B)</p> Signup and view all the answers

<p>An increase of 10 dB doubles the perceived loudness. (D)</p> Signup and view all the answers

<p>Noise is always an irregular oscillation. (B)</p> Signup and view all the answers

<p>Increased noise from road traffic. (C)</p> Signup and view all the answers

<p>Implementing soundproofing measures on machinery and walls. (C)</p> Signup and view all the answers

<p>Dizziness, nausea, and hallucinations. (B)</p> Signup and view all the answers

<p>Good built environment. (B)</p> Signup and view all the answers

<p>Established guideline values for traffic noise. (D)</p> Signup and view all the answers

<p>Their eardrums are more delicate. (C)</p> Signup and view all the answers

<p>Permanent tinnitus and potential hearing damage. (B)</p> Signup and view all the answers

<p>Its duration. (D)</p> Signup and view all the answers

<p>A noise environment inconsistent with a healthy environment. (A)</p> Signup and view all the answers

<p>Stress and anxiety caused by noise affecting animal behavior. (B)</p> Signup and view all the answers

<p>Equipping Vehicles with Mufflers (B)</p> Signup and view all the answers

<p>Space is a vacuum, and sound requires matter to propagate. (B)</p> Signup and view all the answers

<p>Building a factory that significantly increases noise pollution in a nearby town. (C)</p> Signup and view all the answers

<p>20% (B)</p> Signup and view all the answers

<p>To equalize pressure between the ear and the environment. (C)</p> Signup and view all the answers

<p>It interprets electrical signals and gives meaning to sounds based on prior learning. (D)</p> Signup and view all the answers

<p>Approximately 1,000,000 (B)</p> Signup and view all the answers

<p>Pressure wave -&gt; vibration -&gt; electrical signal -&gt; interpretation (B)</p> Signup and view all the answers

<p>Capture sound waves. (A)</p> Signup and view all the answers

<p>They would not be able to hear because the sound waves could not be transmitted to the inner ear. (D)</p> Signup and view all the answers

<p>The vibration of the tuning fork creates pressure waves in the air. (B)</p> Signup and view all the answers

<p>Our hearing range is limited, and some sounds produced by animals or other sources are beyond our perception. (C)</p> Signup and view all the answers

<p>To prevent sound from easily traveling between rooms. (B)</p> Signup and view all the answers

<p>To monitor and improve the work environment, including noise levels. (B)</p> Signup and view all the answers

<p>'Noise' is a scientific term for irregular oscillations, while 'disturbing sounds' encompass a broader range of unwanted sounds in daily life. (A)</p> Signup and view all the answers

<p>Installing sound-absorbing hoods on machinery. (D)</p> Signup and view all the answers

<p>Careful building design, including good insulation and sound-absorbing materials. (A)</p> Signup and view all the answers

<p>Oiling machines and engines regularly. (B)</p> Signup and view all the answers

<p>Using earmuffs. (D)</p> Signup and view all the answers

<p>Lack of concentration and learning difficulties. (D)</p> Signup and view all the answers

<p>Their hearing range deteriorates, especially at higher frequencies. (C)</p> Signup and view all the answers

<p>Animals can detect infrasound or ground shaking, providing early warning of the tsunami. (C)</p> Signup and view all the answers

<p>Infrasound has a frequency below 20 Hz, while ultrasound has a frequency above 20,000 Hz. (D)</p> Signup and view all the answers

<p>It produces sounds that are below the human hearing threshold but within the hearing range of dogs. (D)</p> Signup and view all the answers

<p>The reflection of the sound waves from different tissues is used to create an image of the fetus. (A)</p> Signup and view all the answers

<p>The frequency is too low for the human ear to detect. (C)</p> Signup and view all the answers

<p>The approaching weather front emits infrasound, which some people may be sensitive to. (B)</p> Signup and view all the answers

<p>The frequencies of these sounds are outside the range of human hearing. (E)</p> Signup and view all the answers

The study of sound and its properties.

Sound is produced by vibrations in matter.

A wave formed by the oscillation of molecules in matter.

A membrane that vibrates in response to sound waves.

A spiral-shaped organ in the inner ear that converts vibrations into electrical signals.

A tube that equalizes pressure between the ear and environment.

Sound cannot exist in a vacuum due to lack of matter.

The process of changing sound waves into electrical signals in the ear.

The speed at which sound waves travel through different materials.

The number of wave oscillations per second, measured in hertz (Hz).

A sound wave with many peaks per second, resulting in a high pitch.

A sound wave with fewer peaks per second, resulting in a low pitch.

A sound produced with high energy and pressure, resulting in a tall wave peak.

A sound produced with less energy and pressure, resulting in a shorter wave peak.

An instrument that converts sound into electrical signals for visual representation.

A wave that carries sound energy through air or other mediums, depicted in oscillations.

Humans can hear sounds between 20 Hz and 20,000 Hz.

As people age, their ability to hear soft or high-frequency sounds decreases.

Sound with frequencies below 20 Hz; produced by natural processes and machines.

Can cause physical sensations or headaches; animals sense it better than humans.

Sound with frequencies above 20,000 Hz; beyond human hearing range.

Applications include medical imaging, cleaning, and locking devices.

Many animals can hear frequencies lower than 20 Hz and higher than 20,000 Hz.

Animals often sense tsunamis through vibrations or infrasound, unlike humans.

A procedure that uses sound waves to create images of the fetus during pregnancy.

Irregular oscillation of sound that can disturb and affect memory and well-being.

Measurement of sound intensity, expressed in decibels (dB).

A condition characterized by hearing ringing or buzzing in the ears.

Devices worn to protect ears from excessive noise levels.

Noise reduces memory retention and can increase stress.

Noise arises from a source, spreads through medium, and is heard by someone.

Methods like noise barriers are used to decrease noise from road traffic.

Devices used on machines to minimize noise in industries.

Structures built to reduce sound in residential areas from construction activities.

Unwanted noises that can cause stress or sleep problems; includes everyday sounds like barking or screaming.

A person responsible for ensuring a safe work environment, including managing noise levels.

Layers in walls that help reduce sound transmission between rooms in buildings.

14% of adults in Sweden are bothered by traffic noise weekly.

Increase in adults bothered by traffic noise from 12% to 14% in 8 years.

20% of 12-year-olds are bothered by noise near home or school.

Community noise is a widespread environmental issue in Sweden.

An environmental goal for a healthy living environment minimizing noise.

In 1997, Sweden established guidelines for acceptable traffic noise.

Some sounds, like wind or sea, are not disturbing despite being noisy.

The length of noise exposure affects how disturbing it is.