Chapter 2 Lesson 1 Review Cards

Question 0

What is needed to create a sound wave?

Answer 0

A source of energy to create a vibration

Question 1

What kind of waves are sound waves?

Answer 1

Sound waves travel through a medium as Longitudinal Waves

Question 2

Describe the two parts of a sound wave.

Answer 2

Compressions are when the particles of the medium are close together
Rarefactions are when the particles of the medium are far apart

Question 3

Know the mediums sound can and cannot travel through.

Answer 3

It can travel through solids, liquids and gases but not space. Space is considered a vacuum.

Question 4

Where does a sound wave have the most energy and produce the loudest sound?

Answer 4

A sound wave has the most energy and produces the loudest sound nearest to the source.

Question 5

What are the three factors that affect the speed of sound?

Answer 5

Stiffness, density, temperature

Question 6

How does density affect the speed of sound?

Answer 6

In denser material it is harder for the particles to move as sound waves pass by. The more dense the material, the more mass it has in the given volume.
More dense = slower speed of sound

Less dense = faster speed of sound

Question 7

How does temperature affect the speed of sound?

Answer 7

In liquids or gases sound travels slower than higher temperatures. At lower temperatures the particles of a medium move more slowly than at higher temperatures

Question 8

How does stiffness affect the speed of sound?

Answer 8

Sound travels more quickly in stiff media because when the particles of the medium compressed they quickly spread out again. Sound travels fastest in solids, then liquids, then gases