Chapter 13: Vocab Flashcards Preview

Science > Chapter 13: Vocab > Flashcards

Flashcards in Chapter 13: Vocab Deck (37)
Loading flashcards...
1

Moves through matter. (Cannot travel through a vacuum)

Sound wave

2

Vibrations that can pass through electric and magnetic fields.

Light

3

High point of a wave.

Crest

4

Low point of a wave.

Trough

5

The distance from the midpoint to the top of the crest. (Or bottom of the trough)

Amplitude

6

From one crest to the next.

Wavelength

7

Number of vibrations passing a given point per unit of time.

Frequency

8

Unit of frequency, one vibration per second.

Hertz

9

The time required for one complete vibration.

Period

10

The speed which waves travel.

Wave speed

11

A wave in which the particles move perpendicular to wave motion. (Water waves)

Transverse wave

12

Particles move back and forth in the direction of wave motion. (Aka compressional waves)

Longitudinal Wave

13

Squeezing together

Compression

14

A thinning out. (Slinky/sound waves)

Rarefaction

15

How high or low a sound is. (Dependent upon the frequency of the vibrating object.)

Pitch

16

Detects human sounds 20-20,000 hz.

Human ear

17

Frequency less than 20 hz.

Infrasonic waves

18

Frequency greater than 20,000 hz.

Ultrasonic waves

19

Reflection of sound.

Echo

20

Bending of sound

Refraction

21

The vibration of a sample of matter due to interaction with a frequency that is the same as the sample's natural frequency.

Resonance

22

A frequency at which an electric object tends to vibrate.

Natural Frequency

23

The combining of two or more waves of the same wavelength.

Interference

24

The crest of one wave overlaps the crest of another higher amplitude.

Constructive Interference

25

The periodic variation loudness due to interference of two waves of slightly different frequency.

Beats

26

One wave crest overlaps the trough of another lower amplitude.

Destructive Interference

27

A stationary wave pattern formed when 2 sets of identical waves pass through a medium in opposite direction.

Standing wave

28

The part of a standing wave that doesn't seem to move.

Node

29

The part of a standing wave that moves the most.

Antinode

30

The change in frequency of wave motion resulting from motion of either the wave source or the observer.

Dobbler Effect