Neets Module 10 Ch1

Front 1

what is propagation

Back 1

propagation means spreading out

Front 2

How is a wave defined as it applies to wave propagation?

Back 2

A wave is a disturbance that moves through a medium

Front 3

What is a wave motion ?

Back 3

A means of transferring energy from one place to another

Front 4

What are some examples of wave motion?

Back 4

sound waves, lights waves, heat waves, water waves, and regular waves

Front 5

What type of wave motion is represented by the motion of water

Back 5

transverse wave

Front 6

What are some examples of transverse waves?

Back 6

radio waves, light waves, heat waves

Front 7

What example of a longitudinal wave was given in the text?

Back 7

sound waves

Front 8

what are the three requirements for a wave to be propagated?

Back 8

a source, medium, and a detector(receiver)

Front 9

What is a cycle?

Back 9

A sequence of events such as the alteration of a positive and negative alternating current

Front 10

what is wavelength?

Back 10

the space occupied by one cycle of radio at anyone given moment

Front 11

What is the law of reflection?

Back 11

the angle of incidence is equal to the angle of reflection

Front 12

When a wave is reflected from a surface , energy is transferred ? when is the transfer of energy greatest?

Back 12

when the incident wave is nearly parallel with the surface

Front 13

When is the transfer of energy minimum?

Back 13

when the incident wave is perpendicular to the surface, also a dull or very black surface will reflect very little regardless of the angle

Front 14

A refracted wave occurs when a wave passes from one medium into another medium . what determines the angle of refraction?

Back 14

the density of the two mediums and the frequency of the waves.

Front 15

The apparent change in frequency or pitch because of motion is explained by what effect?

Back 15

Doppler effect

Front 16

what term is used to describe sounds capable of being heard by the human ear?

Back 16

sonics

Front 17

Are all sounds audible to the human ear? Why?

Back 17

No because the human ear cannot hear sounds in the infrasonic and ultrasonic regions

Front 18

Sound waves transmitted from a source are sometimes weak when they reach the detector. what instrument is used to boost the weak signal?

Back 18

an amplifier

Front 19

what are the three basic requirements for sound?

Back 19

a source, medium, and detector

Front 20

what are the two general groups of sound?

Back 20

noise and tones

Front 21

What are the three characteristics?

Back 21

pitch intensity and quality

Front 22

what is the normal audible range of the human ear?

Back 22

20Hz to 20Khz

Front 23

what is intensity as it pertains to sound?

Back 23

the amount of energy transferred from the source

Front 24

what characteristic of sound enable a person to distinguish one musical instrument from another if they are all playing at the same time?

Back 24

quality

Front 25

how does density and temperature affect the quality of sound?

Back 25

velocity increases and density decreases and temperature increases

Front 26

what term is used to describe the science of sound?

Back 26

acoustics

Front 27

a sound wave that is reflected back toward the source is known as what type of sound?

Back 27

echo

Front 28

what is the term used for multiple directions of sound waves?

Back 28

reverberations

Front 29

A cavity that vibrates at its natural frequency produces a louder sound at the other frequencies. what term is used to describe this phenomenon?

Back 29

resonance

Front 30

what do we call a disturbance that distracts or distorts the quality of sound?

Back 30

noise

Front 31

what are the three means of producing light?

Back 31

mechanical, electrical, and chemical

Front 32

what is the smallest unit of radiant energy?

Back 32

photon

Front 33

What unit is used to measure the different wavelengths?

Back 33

Angstrom unit

Front 34

what are the three primary colors of light?

Back 34

red, green, blue

Front 35

what are the three secondary colors of light?

Back 35

magenta, yellow, cyan

Front 36

White light falls upon a dull , rough , dark brown object . Will the light be reflected, diffused, or absorbed by the object?

Back 36

reflected or absorbed

Front 37

what color will be emitted by a dull, rough, black object when light falls upon it?

Back 37

none all light will be reflected

Front 38

A object that transmits light through an object cannot be seen clearly is known as what kind of substance?

Back 38

translucent

Front 39

At what speed does light travel?

Back 39

300,000,000 meters per second
186,000 miles per second

Front 40

A light wave enters a sheet of glass at a perfect right angle to the surface. Is the majority of wave reflected, refracted, or absorbed?

Back 40

transmitted

Front 41

When a light strikes a piece of white paper the light is reflected in all directions. What do we call this scattering of light?

Back 41

diffused

Front 42

what are the three examples of electromagnetic energy ?

Back 42

light waves, heat waves, and radio waves

Front 43

What is the main difference between the bulk of the electromagnetic spectrum and the visual spectrum

Back 43

the visual spectrum can be seen by the human eye

Front 44

What are the two component fields that make up the electromagnetic wave?

Back 44

electric and magnetic field

Front 45

what do we call a conductor (or set of conductors)that radiates electromagnetic energy into space?

Back 45

antenna

Front 46

what we call the field that is created between two rods when a voltage is applied

Back 46

electric field

Front 47

when current flows through a conductor , a field is created around the conductor. what is the field called?

Back 47

magnetic field

Front 48

An induction field is created around a conductor when current flows through it. what do we call the field that detaches itself from the conductor and travels through space?

Back 48

Radiation field