Contents

- 1 What happens when a wave period decreases?
- 2 When frequency increases does period decrease?
- 3 What decreases in a wave when the frequency is decreased?
- 4 When amplitude increases does energy increase?
- 5 What affects wave period?
- 6 What happens to the waves as you increase or decrease the amplitude what happens to the waves as you increase or decrease the frequency?
- 7 What is the period formula?
- 8 What is the relation between frequency and time period?
- 9 What happens to frequency when period increases?
- 10 When waves are slowed down the wavelength decreases?
- 11 Why does frequency increase as length decreases?
- 12 Does increasing frequency increase wave speed?
- 13 What happens to energy when amplitude decreases?
- 14 Does amplitude affect energy?
- 15 Does amplitude change with medium?

## What happens when a wave period decreases?

Answer: the frequency of the **wave**. In fact, the frequency of a **wave** is defined as: where T is the **period** of the **wave**. We see that frequency is inversely proportional to the **period**: therefore, if the **period decreases**, the frequency of the **wave increases**.

## When frequency increases does period decrease?

A time **period** (denoted by ‘T” ) is the time taken for one complete cycle of vibration to pass a given point. As the **frequency** of a wave **increases**, the time **period** of the wave **decreases**. The unit for time **period** is ‘seconds’.

## What decreases in a wave when the frequency is decreased?

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.

## When amplitude increases does energy increase?

The **energy** transported by a wave is directly proportional to the square of the **amplitude**. So whatever change occurs in the **amplitude**, the square of that effect impacts the **energy**. This means that a doubling of the **amplitude** results in a quadrupling of the **energy**.

## What affects wave period?

The shorter the **period**, the weaker and slower the swell, and the closer to the surface it travels. The longer the **period**, the more **wave** energy is contained within the swell and the faster and deeper beneath the sea surface it travels.

## What happens to the waves as you increase or decrease the amplitude what happens to the waves as you increase or decrease the frequency?

The **amplitude** of a **wave** is related to the amount of energy that it carries. As the **amplitude** of the sound **wave increases**, the intensity of the sound also **increases**. When the **frequency increases** more **wave** crests pass a fixed point each second. This means that the wavelength shortens.

## What is the period formula?

We can have all of them in one **equation**: y = A sin(B(x + C)) + D. amplitude is A. **period** is 2π/B.

## What is the relation between frequency and time period?

Sound | Short/Long Answer Questions

The number of times a **cycle** is completed in a second is the **frequency**. The **time** taken to complete one vibration is called **time period**. **Frequency and time period** is inversely proportional, the number of vibrations per second is **frequency**.

## What happens to frequency when period increases?

What is the **period** of a wave? When the **period** of a wave **increases**, **what happens** to its **frequency**? Its **frequency decreases**. Its **frequency increases**.

## When waves are slowed down the wavelength decreases?

**Wave** speed, frequency and **wavelength** in refraction

Although the **wave slows down**, its frequency remains the same, due to the fact that its **wavelength** is shorter. **When waves** travel from one medium to another the frequency never changes. As **waves** travel into the denser medium, they **slow down** and **wavelength decreases**.

## Why does frequency increase as length decreases?

As ℓ gets smaller, λ gets smaller and the resonant **frequency** gets higher. Sound waves, like all waves, follow the Universal Wave Equation: speed = **frequency** x wavelength. Since speed is constant as the wavelength **decreases** the **frequency** of the sound must **increase**.

## Does increasing frequency increase wave speed?

The data convincingly show that **wave frequency does** not affect **wave speed**. An **increase** in **wave frequency** caused a decrease in wavelength while the **wave speed** remained constant.

## What happens to energy when amplitude decreases?

The sound is perceived as louder if the **amplitude increases**, and softer if the **amplitude decreases**. This is illustrated below. The **amplitude** of a wave is related to the amount of **energy** it carries. A high **amplitude** wave carries a large amount of **energy**; a low **amplitude** wave carries a small amount of **energy**.

## Does amplitude affect energy?

The higher the **amplitude**, the higher the **energy**. The amount of **energy** they carry is related to their frequency and their **amplitude**. The higher the frequency, the more **energy**, and the higher the **amplitude**, the more **energy**.

## Does amplitude change with medium?

Yes. **Amplitude** has to **change** in order for a transverse wave to conserve energy and momentum in different media. This is also true of longitudinal waves.