Science - Physics (Waves)

Question 1

wave

Answer 1

rhythmic disturbance that travels through matter or space

Question 2

wave motion

Answer 2

transferring energy

Question 3

transverse wave

Answer 3

matter vibrates at right angles to the direction in which the wave travels

Question 4

longitudinal wave

Answer 4

matter vibrates back and forth along the path that the wave travels

Question 5

periodic motion

Answer 5

motion that repeats itself over and over again

Question 6

periodic wave

Answer 6

motion that repeats itself at regular intervals and that transfers energy but not mass

Question 7

period

Answer 7

time it takes for the motion to repeat itself

Question 8

frequency

Answer 8

how often a cycle repeats itself

Question 9

what unit is frequency usually measured in?

Answer 9

hertz - cycles per second

Question 10

amplitude

Answer 10

maximum distance a wave rises or falls as it travels

Question 11

crest of a transverse wave

Answer 11

max upward displacement

Question 12

trough

Answer 12

max downward displacement

Question 13

wavelength

Answer 13

distance between two successive crests

Question 14

wave speed

Answer 14

frequency of the wave times the wavelength

Question 15

diffraction

Answer 15

bending of waves around an obstacle

Question 16

resonance

Answer 16

vibration of one system results in the vibration of the other system at the same frequency

Question 17

photons

Answer 17

tiny packets of energy (light waves are made up of these)

Question 18

electromagnetic waves

Answer 18

moving photos generate electric and magnetic fields

Question 19

electromagnetic spectrum

Answer 19

complete spectrum of light arranged in order of their wavelength

Question 20

visible light (part of electromagnetic spectrum)

Answer 20

portion that is visible to human eye

Question 21

what does the electromagnetic spectrum consist of?

Answer 21

radio waves
infrared waves
visible light
ultraviolet light
X-rays
gamma rays

Question 22

what kind of waves are sound waves?

Answer 22

longitudial

Question 23

how is the loudness of a sound wave determined?

Answer 23

amplitude

Question 24

whenever there is relative motion between the source of waves and the observer

Answer 24

doppler effect

Question 25

refraction

Answer 25

bending of light rays as they pass from one medium to another

Question 26

dispersion

Answer 26

separating light into its component colors

Question 27

lens

Answer 27

any transparent material that refracts light

Question 28

convex lens

Answer 28

a lens that is thicker in the center than the edges

Question 29

focal point

Answer 29

point at which the light rays meet

Question 30

concave lens

Answer 30

thicker at the edges than it is in the middle

Question 31

images of an object produces by concave lenses are...

Answer 31

smaller than the object