Waves

Question 1

Wave

Answer 1

a disturbance caused by a vibration; Waves travel away from the source that makes them.

Question 2

Medium

Answer 2

Quick Answer. Overall, in scientific contexts the word “medium” refers to a substance or material in which something exists or grows or through which something can move or otherwise 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. While waves can move over long distances, the movement of the medium of transmission—the material—is limited. Therefore, oscillating material does not move far from its initial equilibrium position.

Question 4

Transverse wave

Answer 4

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

Question 5

Longitudinal wave

Answer 5

a wave vibrating in the direction of propagation.

Question 6

Crest

Answer 6

the highest point of a wave

Question 7

Trough

Answer 7

The lowest point of a wave

Question 8

Amplitude

Answer 8

the maximum extent of a vibration or oscillation, measured from the position of equilibrium.

Question 9

Wave length

Answer 9

the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

Question 10

Frequency

Answer 10

the rate at which something occurs or is repeated over a particular period of time or in a given sample

Question 11

Reflection

Answer 11

the throwing back by a body or surface of light, heat, or

Question 12

Diffraction

Answer 12

the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced

Question 13

Interference

Answer 13

the combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or canceled.

Question 14

Electromagnetic spectrum

Answer 14

the range of wavelengths or frequencies over which electromagnetic radiation extends.

Question 15

Radiation

Answer 15

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

Question 16

Electromagnetic wave

Answer 16

Definition of electromagnetic wave. : 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 17

Radio waves

Answer 17

an electromagnetic wave of a frequency between about 104 and 1011 or 1012 Hz, as used for long-distance communication.

Question 18

Microwaves

Answer 18

an electromagnetic wave with a wavelength in the range 0.001–0.3 m, shorter than that of a normal radio wave but longer than those of infrared radiation. Microwaves are used in radar, in communications, and for heating in microwave ovens and in various industrial processes.

Question 19

Infrared light

Answer 19

Infrared light is one type of light that is invisible to us. Gamma rays, X-rays, ultraviolet light, microwaves and radio waves are other types of invisible light. All of these rays and waves are the same type of electromagnetic energy.

Question 20

Ultraviolet light

Answer 20

Ultraviolet light is a form of radiation which is not visible to the human eye. It’s in an invisible part of the “electromagnetic spectrum”. Radiated energy, or radiation, is given off by many objects: a light bulb, a crackling fire, and stars are some examples of objects

Question 21

X-rays

Answer 21

X-radiation (composed of X-rays) is a form of electromagnetic radiation. Most X-rays have a wavelength ranging from 0.01 to 10 nanometers, corresponding to frequencies in the range 30 petahertz to 30 exahertz (3×1016 Hz to 3×1019 Hz) and energies in the range 100 eV to 100 keV

Question 22

Gamma rays

Answer 22

Gamma rays have the smallest wavelengths and the most energy of any wave in the electromagnetic spectrum. They are produced by the hottest and most energetic objects in the universe, such as neutron stars and pulsars, supernova explosions, and regions around black holes.

Question 23

Transmission

Answer 23

the mechanism by which power is transmitted from an engine to the wheels of a motor vehicle.

Question 24

Absorption

Answer 24

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

Question 25

Scattering

Answer 25

the process in which electromagnetic radiation or particles are deflected or diffused.

Question 26

Polarization

Answer 26

Polarization is a concept that comes from science, and it involves light, radiation, or magnetism moving in specific directions. Outside science, polarization usually refers to how people think, especially when two views emerge that drive people apart, kind of like two opposing magnets.

Question 27

Prism

Answer 27

a solid geometric figure whose two end faces are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms.

Question 28

Primary colors

Answer 28

any of a group of colors from which all other colors can be obtained by mixing.

Question 29

Primary pigment

Answer 29

The primary colors of pigment (also known as subtractive primaries) are used when producing colors from reflected light; for example, when mixing paint or using a color printer. The primary colors of pigment are magenta, yellow, and cyan (commonly simplified as red, yellow, and blue).

Question 30

Refraction

Answer 30

the fact or phenomenon of light, radio waves, etc., being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.