Waves

Question 1

Frequency

Answer 1

Wave frequency is the number of waves that pass a fixed point in a given amount of time.

Question 2

Period

Answer 2

A time period is the time needed for one complete cycle of vibration to pass in a given point

Question 3

Wavelength

Answer 3

equals the distance between two successive wave crests or troughs

Question 4

Crest

Answer 4

A crest is the point on a wave with the maximum value of upward displacement within a cycle.

Question 5

Trough

Answer 5

The Valley Of a Mechanical Wave

Question 6

Medium

Answer 6

A Substance that allows waves to Transfer energy from one place to another

Question 7

Amplitude

Answer 7

Maximum Distance Moved By A Vibrating Body

Question 8

Longitudinal Wave

Answer 8

Longitudinal waves are waves in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of propagation of the wave

Question 9

Electromagnetic Spectrum

Answer 9

Definition of electromagnetic spectrum. : the entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light.

Question 10

Transverse Wave

Answer 10

A transverse wave is a moving wave that consists of oscillations that are perpendicular to the direction of propagation of the wave.

Question 11

Compression

Answer 11

Compression. A compression is a region in a longitudinal wave where the particles are closest together. Rarefaction. A rarefaction is a region in a longitudinal wave where the particles are furthest apart.

Question 12

Rarefaction

Answer 12

9.2 Compression and rarefaction. A rarefaction is a region in a longitudinal wave where the particles are furthest apart. As seen in Figure 9.2, there are regions where the medium is compressed and other regions where the medium is spread out in a longitudinal wave.

Question 13

Reflection

Answer 13

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves.

Question 14

Refraction

Answer 14

Refraction, in physics, the change in direction of a wave passing from one medium to another caused by its change in speed. For example, waves in deep water travel faster than in shallow.

Question 15

Diffraction

Answer 15

Diffraction refers to various phenomena that occur when a wave encounters an obstacle or a slit. It is defined as the bending of waves around the corners of an obstacle or aperture into the region of geometrical shadow of the obstacle.