Waves

Question 1

Wave

Answer 1

A disturbance in a different medium from one place to the other

Question 2

Medium

Answer 2

Overall this refers to something that exists or grows which can move or travel

Question 3

Mechanical Wave

Answer 3

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

Question 4

Transverse Waves

Answer 4

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

Question 5

Longitudinal Waves

Answer 5

Longitudinal waves, also known as “I waves”, are wave/s in which the displacement of the medium is in the same direction as, or the opposite direction to, the direction of travel of the wave.

Question 6

Crest

Answer 6

Highest point on a wave

Question 7

Trough

Answer 7

The lowest point on a wave

Question 8

Amplitude

Answer 8

The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period). There are various definitions of amplitude , which are all functions of the magnitude of the difference between the variable’s extreme values. In older texts the phase is sometimes called the amplitude.

Question 9

Wave Length

Answer 9

The length of one crest or trough to the other

Question 10

Frequency

Answer 10

Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency.

Question 11

Reflection

Answer 11

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.

Question 12

Refraction

Answer 12

Refraction is the change in direction of propagation of a wave due to a change in its transmission medium

Question 13

Diffraction

Answer 13

Diffraction refers to various phenomena which occur when a wave encounters an obstacle or a slit

Question 14

Interference

Answer 14

The process in which two or more light, sound, or electromagnetic waves of the same frequency combine to reinforce or cancel each other, the amplitude of the resulting wave being equal to the sum of the amplitudes of the combining waves.

Question 15

Electromagnetic Spectrum

Answer 15

The electromagnetic spectrum is the collective term for all known frequencies and their linked wavelengths of the known photons.

Question 16

Radiation

Answer 16

the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization

Question 17

Electromagnetic Wave

Answer 17

one of the waves that are propagated by simultaneous periodic variations of electric and magnetic field intensity and that include radio waves, infrared, visible light, ultraviolet, X-rays, and gamma rays

Question 18

Radio Waves

Answer 18

Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light

Question 19

Microwaves

Answer 19

Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter; with frequencies between 300 MHz (100 cm) and 300 GHz (0.1 cm).

Question 20

Infrared

Answer 20

Infrared (IR) is an invisible radiant energy, electromagnetic radiation with longer wavelengths than those of visible light, extending from the nominal red edge of the visible spectrum at 700 nanometers (frequency 430 THz) to 1000000 nm (300 GHz) (although people can see infrared up to at least 1050 nm in experiments).

Question 21

Ultraviolet Light

Answer 21

Ultraviolet (UV) is an electromagnetic radiation with a wavelength from 10 nm (30 PHz) to 400 nm (750 THz), shorter than that of visible light but longer than X-rays. UV radiation is present in sunlight.

Question 22

X-Ray

Answer 22

X-radiation (composed of X-rays) is a form of electromagnetic radiation. (10 to the 16th power and 10 to the 20th power of hertz is typical)

Question 23

Gamma Waves

Answer 23

A gamma wave is a pattern of neural oscillation in humans with a frequency between 25 and 100 Hz, though 40 Hz is typical.

Question 24

Transmission

Answer 24

Transmission is the act of transferring something from one spot to another, like a radio or TV broadcast, or a disease going from one person to another.

Question 25

Absorption

Answer 25

In physics, absorption of electromagnetic radiation is the way in which the energy of a photon is taken up by matter, typically the electrons of an atom

Question 26

Scattering

Answer 26

Scattering, in physics, a change in the direction of motion of a particle because of a collision with another particle.

Question 27

Polarization

Answer 27

Polarized light waves are light waves in which the vibrations occur in a single plane.

Question 28

Prism

Answer 28

In optics, a prism is a transparent optical element with flat, polished surfaces that refract light

Question 29

Primary Colors

Answer 29

Red, yellow and blue are the primary colors. They mix to make different colors

Question 30

Primary Pigments

Answer 30

A set of primary colors is a small, arbitrary set of pigmented physical media, lights or purely abstract elements of a mathematical colorspace model