Waves

Question 1

propagation of disturbance through a medium in which the energy is transferred

Answer 1

Wave

Question 2

carries the wave

Answer 2

Medium

Question 3

wave’s movement is perpendicular to its medium

Answer 3

Transverse wave

Question 4

wave’s movement is parallel to its medium

Answer 4

Longitudinal wave

Question 5

needs medium so that its energy will be transmitted

Answer 5

Mechanical wave

Question 6

doesn’t need medium so that its energy will be transmitted

Answer 6

Electromagnetic wave

Question 7

highest point of wave

Answer 7

Crest

Question 8

lowest point of wave

Answer 8

Trough

Question 9

distance of any point of the wave from the rest point

Answer 9

Amplitude

Question 10

rest to crest

Answer 10

Positive amplitude

Question 11

rest to trough

Answer 11

Negative amplitude

Question 12

distance between 2 consecutive rests or troughs

Answer 12

Wavelength

Question 13

number of waves passing a given point within a second expressed in Hertz (Hz)

Answer 13

Frequency

Question 14

how fast a wave travels (wavelength * frequency)

Answer 14

Wave speed/velocity

Question 15

form of energy produced when air molecules vibrate and move in pattern known as sound waves

Answer 15

Sound

Question 16

vibrations of the medium create a series of compression and rarefraction

Answer 16

Sound waves

Question 17

highness or lowness of sound

Answer 17

Pitch

Question 18

amount of energy a sound wave produces

Answer 18

Intensity

Question 19

sensation of the ear that intensity of sound produces measured by using the Decibel System (dB)

Answer 19

Loudness

Question 20

used to distinguish between 2 different sounds that have the same pitch and loudness

Answer 20

Timbre or Quality

Question 21

can be heard by human ear (ranges fro 20 Hz to 20000 Hz)

Answer 21

Audible Sound

Question 22

can’t be heard by human ear (below 20 Hz)

Answer 22

Infrasonic Sound

Question 23

can’t be heard by human ear (above 20,000 Hz)

Answer 23

Ultrasonic Sound

Question 24

bouncing off of sound waves

Answer 24

Reflection of Sound

Question 25

bending of sound wave due to its change in speed

Answer 25

Refraction of Sound

Question 26

bending or diffract as the waves travel around the corners of obstacles

Answer 26

Diffraction of Sound

Question 27

result of 2 or more sounds (waves overlapping)

Answer 27

Interference of Sound

Question 28

when an object vibrates at same natural frequency as a second object and forces that object into motion

Answer 28

Resonance

Question 29

change in wave frequency due to a moving source

Answer 29

Doppler Effect

Question 30

transverse, electromagnetic wave that can be seen by humans (speed in vacuum = 3 x 10^8 m/s)

Answer 30

Light

Question 31

associated with electromagnetic radiation of a certain range of wavelengths visible to the human eye

Answer 31

Color

Question 32

phenomenon in which a prism separates white light into its component colors

Answer 32

Dispersion

Question 33

portion of the electromagnetic spectrum that is visible to the human eye

Answer 33

Visible Light Spectrum

Question 34

power of light

Answer 34

Intensity (Light)

Question 35

qualitative expression of light intensity

Answer 35

Brightness

Question 36

quantity of visible light that is emitted in unit time per unit solid angle expressed in Candela (cd)

Answer 36

Luminous intensity

Question 37

material that absorbs light

Answer 37

Opaque material

Question 38

material that allows light to easily pass through

Answer 38

Transparent material

Question 39

material that only allows some light to pass through

Answer 39

Translucent material

Question 40

light bounces off the surface

Answer 40

Reflection of Light

Question 41

bending of light as it passes through materials of different optical density

Answer 41

Refraction of Light

Question 42

bending of light around obstacles in its path

Answer 42

Diffraction of Light

Question 43

light can superimpose and can either have constructive or destructive interference

Answer 43

Interference of Light

Question 44

light is reflected completely at the boundary between 2 mediums

Answer 44

Total Internal Reflection