Waves

Question 1

wave

Answer 1

a repeating disturbance or movement that transfers energy through matter or space

Question 2

waves carry energy without transporting what?

Answer 2

Matter

Question 3

all waves are produced by…

Answer 3

something that vibrates

Question 4

medium?

Answer 4

a matter through which a wave travels. may be solid, liquid, or gas.

Question 5

do all waves need a medium to travel through?

Answer 5

no, example light and radio waves

Question 6

what are mechanical waves?

Answer 6

waves that can travel only through matter

Question 7

transverse waves

Answer 7

matter in the medium moves back and forth at right angles to the direction that the waves travel. example: ocean waves or two people holding a rope while shaking it.

Question 8

compressional waves

Answer 8

matter in the medium moves along the same direction that the wave travels. example:holding a spring and compressing it then releasing it.

Question 9

ways waves differ:

Answer 9

how much energy they carry, how fast they travel, how they look

Question 10

wavelength

Answer 10

the distance between one point in the wave and the nearest point

Question 11

transverse waves have ___ at highest point and ___ at lowest point

Answer 11

crests and troughs

Question 12

compressional waves have dense regions ___ and less dense regions ___

Answer 12

compressions and rarefactions

Question 13

frequency

Answer 13

how many wavelengths pass a fixed point each second (Hz) frequency= rate of vibration of the source that creates it

Question 14

wave speed?

Answer 14

speed(m/s)=wavelength(m)*frequency(Hz)

v=wavelengthXf

Question 15

light waves travel ___ than sound waves

Answer 15

faster

Question 16

amplitude

Answer 16

a measure of energy in a wave

Question 17

the more energy a wave carries, the ___ its amplitude

Answer 17

greater

Question 18

two types of mechanical waves?

Answer 18

transverse and compressional

Question 19

what are seismic waves?

Answer 19

combination of transverse and compressional depends on the medium. they can travel through earth and along earths surface. (earthquakes)

Question 20

when does light bend towards the normal?

Answer 20

when going from a fast medium to a slow medium

Question 21

when does light bend away from the normal?

Answer 21

when going from a slow medium to a fast medium

Question 22

how are the angle of incidence and angle of reflection related?

Answer 22

they are equal

Question 23

what is resonance?

Answer 23

when an object vibrates at its natural frequency, making another object of that same frequency vibrate (think of breaking glass with your voice)