Contents

- 1 What are two factors that affect the intensity of sound?
- 2 What increases as sound waves increase in frequency?
- 3 What determines the intensity of sound?
- 4 What determines the intensity of a wave?
- 5 Does frequency affect sound intensity?
- 6 How does volume relate to intensity?
- 7 What happens to pitch when frequency increases?
- 8 What does it mean when the frequency of a wave increases?
- 9 What is the relationship between frequency and sound?
- 10 How are frequency and intensity related?
- 11 What is the sound intensity level?
- 12 How many times louder is 100 dB than 60?
- 13 What is intensity measured by?
- 14 How do you find intensity?
- 15 What is the number of waves per second?

## What are two factors that affect the intensity of sound?

Intensity results from two factors: the amplitude of the **sound waves** and how far they have traveled from the source of the sound.

## What increases as sound waves increase in frequency?

Answer: pitch

Therefore, if the **frequency** of the **sound wave increases**, the pitch **increases** as well.

## What determines the intensity of sound?

The **intensity** of a **sound** is the power of the **sound** in Watts divided by the area the **sound** covers in square meters. The **loudness** of a **sound** relates the **intensity** of any given **sound** to the **intensity** at the threshold of hearing. It is measured in decibels (dB).

## What determines the intensity of a wave?

**intensity** and displacement. For simple mechanical **waves** like sound, **intensity** is related to the density of the medium and the speed, frequency, and amplitude of the **wave**.

## Does frequency affect sound intensity?

If **intensity** of a wave is proportional to **frequency**, why doesn’t **sound** level, in general, depend on **frequency**. i.e. Higher **frequency**, higher **intensity**, higher **sound** level. The **loudness** of a **sound does** not seem to depend on **frequency**. But according to the equation above, **intensity DOES** depend on **frequency**.

## How does volume relate to intensity?

**Intensity** and **volume are** interdependent: as **intensity** increases the **volume** that a lifter **can** complete must reduce. A lifter cannot, by definition, perform their one repetition personal record for multiple sets or reps. Conversely, as **intensity is** reduced, **volume** must increase to provide sufficient stress to the lifter.

## What happens to pitch when frequency increases?

The **pitch** we hear depends on the **frequency** of the sound wave. A high **frequency** corresponds to a high **pitch**. So while the siren produces waves of constant **frequency**, as it approaches us the observed **frequency increases** and our ear hears a higher **pitch**.

## What does it mean when the frequency of a wave increases?

The number of complete wavelengths in a given unit of time **is** called **frequency** (f). As a **wavelength increases** in size, its **frequency** and energy (E) decrease. From these equations you may realize that as the **frequency increases**, the **wavelength** gets shorter. As the **frequency decreases**, the **wavelength** gets longer.

## What is the relationship between frequency and sound?

The sensation of a **frequency** is commonly referred to as the pitch of a **sound**. A high pitch **sound** corresponds to a high **frequency sound** wave and a low pitch **sound** corresponds to a low **frequency sound** wave.

if you consider light is wave, **intensity** is **related** to light radiation energy and **frequency** is the number of waves per second. **Frequency** is **related** to photon’s energy (E = hν, E is energy, h is planck’s constant and ν is **frequency**). In particle nature, **intensity** is **related** to number of photons in the radiation.

## What is the sound intensity level?

**Sound intensity** is defined as the **sound** power per unit area. The most common approach to **sound intensity** measurement is to use the decibel scale: Decibels measure the ratio of a given **intensity** I to the threshold of hearing **intensity**, so that this threshold takes the value 0 decibels (0 dB).

## How many times louder is 100 dB than 60?

A 10-**dB** rise is a 10-**time** leap in loudness. That means an 80-**dB** sound (a vacuum cleaner) is 10 **times louder than** a 70-**dB** sound (a telephone ringing) and **100 times louder than** a **60**–**dB** sound (normal conversation).

## What is intensity measured by?

**Intensity** can be found by taking the energy density (energy per unit volume) at a point in space and multiplying it by the velocity at which the energy is moving. The resulting vector has the units of power divided by area (i.e., surface power density).

## How do you find intensity?

**Intensity** is defined to be the power per unit area carried by a wave. Power is the rate at which energy is transferred by the wave. In equation form, **intensity** I is I=PA I = P A, where P is the power through an area A. The SI unit for I is W/m^{2}.

## What is the number of waves per second?

The frequency ( ) of a **wave** is the **number of waves** passing a point in a certain time. We normally use a time of one **second**, so this gives frequency the unit hertz ( ), since one hertz is equal to one **wave per second**.