Gr 10 Physical Sciences Ch 7: Compression and rarefaction

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What is the direction of particle displacement in a longitudinal wave?

Opposite to the direction of wave propagation

Parallel to the direction of wave propagation (correct)

At an angle to the direction of wave propagation

Perpendicular to the direction of wave propagation

What occurs during a compression in a longitudinal wave?

The density and pressure of the medium remain the same

The density and pressure of the medium become zero

The density and pressure of the medium increase (correct)

The density and pressure of the medium decrease

What is a rarefaction in a longitudinal wave?

A region where particles are at rest

A region where particles are closest together

A region where particles are furthest apart (correct)

A region where particles are moving in a circular motion

What is the relationship between compressions and rarefactions in a longitudinal wave?

They are alternating regions of high and low pressure Signup and view all the answers

What is an example of a longitudinal wave?

A slinky spring being pushed and pulled horizontally Signup and view all the answers

What is the characteristic of particle movement in a longitudinal wave?

Particles move back and forth Signup and view all the answers

What is the main difference between a compression and a rarefaction in a longitudinal wave?

The density of the medium Signup and view all the answers

In a longitudinal wave, what happens to the pressure of the medium during a compression?

It increases above average Signup and view all the answers

What is the result of the particles moving closer together in a longitudinal wave?

An increase in the medium's pressure Signup and view all the answers

What is the characteristic of the medium's density during a rarefaction?

It is lower than average Signup and view all the answers

How do compressions and rarefactions move through the medium in a longitudinal wave?

As alternating regions of high and low pressure Signup and view all the answers

What is the visual representation of a longitudinal wave?

A slinky spring being pushed and pulled horizontally Signup and view all the answers

What is the effect of a compression on the density of the medium in a longitudinal wave?

The density of the medium increases Signup and view all the answers

In a longitudinal wave, what is the orientation of the particles' motion relative to the wave's propagation direction?

Parallel to the wave's propagation direction Signup and view all the answers

During a rarefaction, what happens to the pressure of the medium?

The pressure of the medium decreases Signup and view all the answers

What is the relationship between the density of the medium and its pressure during a compression?

The density increases, and the pressure increases Signup and view all the answers

In a longitudinal wave, what is the pattern of compressions and rarefactions?

Alternating regions of high and low pressure, and high and low density Signup and view all the answers

What is the characteristic of a longitudinal wave that distinguishes it from a transverse wave?

The particles of the medium move parallel to the wave's propagation direction Signup and view all the answers

What is the primary reason why the density of the medium is higher during a compression?

The particles are closest together, resulting in a higher density. Signup and view all the answers

Which of the following statements about compressions and rarefactions is true?

Compressions have a higher density and higher pressure, while rarefactions have a lower density and lower pressure. Signup and view all the answers

What is the result of the alternating regions of high and low pressure in a longitudinal wave?

The compressions and rarefactions travel through the medium. Signup and view all the answers

What is the relationship between the movement of the particles and the direction of the wave's propagation in a longitudinal wave?

The particles move parallel to the direction of the wave's propagation. Signup and view all the answers

What is the characteristic of a longitudinal wave that distinguishes it from other types of waves?