Properties of waves

Question 1

What is a wave?

Answer 1

A wave is a disturbance or movement that transfers energy through matter or space, without causing any permanent displacement (change)

Question 2

What do sound waves do?

Answer 2

Sound waves disturb the air and transfer energy through air.

Question 3

What do ocean waves do?

Answer 3

Ocean waves disturb water and transfer energy through water.

Question 4

What is energy?

Answer 4

Energy is the capacity to apply force over a distance.

Question 5

What is a force?

Answer 5

A force is a push or pull on an object.

Question 6

What is a crest?

Answer 6

The crest is the highest point of a wave.

Question 7

What is a trough?

Answer 7

A trough is the lowest point in a wave.

Question 8

What is equilibrium?

Answer 8

Equilibrium is the rest position.

Question 9

What is a wavelength?

Answer 9

Wavelength is the distance from crest to crest or the distance to complete one complete trough and one complete crest.

Question 10

How is wavelength measured?

Answer 10

Wavelength is measured in metres.

Question 11

What is amplitude?

Answer 11

Amplitude is the height of a wave crest and the depth of a trough.

Question 12

Where is amplitude measured from?

Answer 12

Amplitude is measured from rest position or equilibrium

Question 13

What is amplitude related to?

Answer 13

Amplitude is related to the amount of energy in the wave. The larger the amplitude, the greater the energy

Question 14

What is the relationship between a bright light and dim light and their amplitude?

Answer 14

The amplitude is low for a dim light with low energy, and the amplitude is high for the bright light that has lots of energy.

Question 15

What is frequency?

Answer 15

Frequency is the number of repetitive motions or oscillations that occur in a given time.

Question 16

How is frequency measured?

Answer 16

Frequency is measured in hertz (Hz) or cycles per second

Question 17

what is an inverse relationship?

Answer 17

In an inverse relationship, when one thing increases the other thing decreases.

Question 18

What happens when the wave length of a wave decreases?

Answer 18

When the wavelength of a wave decreases, its frequency increases.

Question 19

What is a weird thing about waves that you don’t realize at first?

Answer 19

A wave does not carry water with it, only the energy carried by a water wave moves forward.

Question 20

What is the matter that energy travels through called?

Answer 20

Matter which energy travels through is called its medium…ie water or air

Question 21

True/False… energy can travel through solid, liquid, and gas

Answer 21

True, energy can travel through solid, liquid, and gas

Question 22

What are the two types of waves that travel through a medium?

Answer 22

Transverse waves and Compression waves travel through medium.

Question 23

What are transverse waves?

Answer 23

Transverse waves the medium moves up and down perpendicular to the direction the energy is traveling. Ie wave going towards the shore, but the boat goes up and down.

Question 24

What are compression waves?

Answer 24

Sound waves are compression waves, like a coiled spring, where the sound moves back and forth along the same direction

Question 25

Water waves and earthquake (seismic) waves are what kind of waves?

Answer 25

Earthquake (seismic) and water waves are a combination of transverse and compression waves.

Question 26

Which waves do not need a medium?

Answer 26

Light waves and radio waves do not need a medium through which to travel.

Question 27

What is the formula for frequency?

Answer 27

Frequency = Cycles divided by seconds