Waves Flashcards Preview

8 Science Note Cards > Waves > Flashcards

Flashcards in Waves Deck (17):
1

Transverse Wave

A transverse wave is a wave vibrating at right angles to the direction of its propagation.

2

Compression Wave

A compression wave is a longitudinal wave (such as a sound wave) propagated by the elastic compression of the medium.

3

Crest

The highest point of a wave.

4

Trough

The lowest point of a wave.

5

Compression

Compression is the action of compressing or being compressed.

6

Rarefraction

Rarefaction is the reduction of an item's density, the opposite of compression. Like compression, which can travel in waves (sound waves, for instance), rarefaction waves also exist in nature. A common rarefaction wave is the area of low relative pressure following a shock wave.

7

Frequency

The frequency of a wave is the number of waves passing a point in a certain time.

8

Amplitude

The amplitude of a wave is the distance from the center line (or the still position) to the top of a crest or to the bottom of a trough.

9

Wavelength

The distance between a point on one wave to the identical point on the next wave.

10

Medium

In the case of a water wave in the ocean, the medium through which the wave travels is the ocean water. In the case of a sound wave moving from the church choir to the pews, the medium through which the sound wave travels is the air in the room.

11

Electromagnetic Wave

Electromagnetic waves are waves that are created as a result of vibrations between an electric field and a magnetic field.

12

Mechanical

A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium.

13

Pitch

How high or low the sound seems to be.

14

Refraction

The bending of light because of a material.

15

Absorption

Absorption is the process or action by which one thing absorbs or is absorbed by another.

16

Reflection

Reflection is the throwing back by a body or surface of light, heat, or sound without absorbing it.

17

Doppler Affect

The change in pitch or wave frequency due to a moving wave source