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Flashcards in Waves Deck (24)
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1

What are waves?

Periodic disturbances in a medium

2

T/F: A wave transfers energy and material

False. A wave transfers energy without transferring the material.

3

Any material a wave can move through

Medium

4

What are common mediums?

Water
Air
Stadiums

5

T/G: Waves move the medium through which they travel.

False. Waves disturb the medium, they do not move it.

6

What is the most common form of a wave?

Transverse

7

Type of wave where the motion of the medium is perpendicular to the direction of the wave

Transverse Wave

8

Type of wave where the motion of the medium is along the direction of the wave speed

Longitudinal

9

What type of wave is sound?

Longitudinal

10

People pushing one another forward in a line is an example of what type of wave?

Longitudinal

11

Spots along the nodal line are called what?

Nodes

12

The points above and below the equilibrium

Above: Crests
Below: Troughs

13

Measurement of the energy in a wave

Amplitude

14

The length of a wave

Wavelength

15

The number of waves passing a point in one second

Frequency

16

Frequency is measured in what units?

Hertz (Hz)

17

Frequency is the inverse of ________________.

Period

18

The time for one wave cycle to complete

Period

19

Symbol for Wavelength

Lambda

20

Audible human range for frequency

20-20,000 Hz

21

Equation for wave speed

v=f lambda

22

Speed of Sound

340 m/sec in air (at 20 degrees celcius)
1520 m/sec in steel

23

T/F: The speed of a wave has nothing to do with its frequency or wavelength.

True. The speed of a wave is determined only by the medium through which it is traveling.

24

How can one change the speed of a wave?

Change the medium