physics- waves

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Name the two types of waves.
transverse and longitudinal
1 of 26
give examples of transverse waves.
water waves, gamma, x rays & radio waves.
2 of 26
give examples of longitudinal waves.
sound.
3 of 26
define a transverse wave.
in a transverse wave the oscillations are at 90 degrees to the direection of energy.
4 of 26
what is a wave?
a wave is an oscillation that transfers energy without transferring matter.
5 of 26
give 2 examples of how waves transfer energy without transferring matter.
1) ripples on a water surface cause floating objects. 2) if you strum a aguitar string and create sound eaves, the sound waves dont carry air away from the guitar to create a vaccum.
6 of 26
define amplitude.
the amplitude is the maximum displacement of a point on a wave from its undisturbed position.
7 of 26
define wavelenghth.
the distance between the same pount on two adjacent waves.
8 of 26
define frequency.
number of waves per second.
9 of 26
what is the unit fro frequency?
Hertz Hz
10 of 26
what is the unit for period?
Second S
11 of 26
defien pperiod.
time period is the amount of time it takes for one wave to pass a point.
12 of 26
what is the equation that connects time and period frequency?
time period = 1 divided by frequency
13 of 26
what is the wave equation?
speed = ferquency × wavelength
14 of 26
how can you measure the speed of sound in the air?
by using a signal generator and oscilloscope.
15 of 26
how can you measure the speed of ripples on a water surface?
use a ripple tank
16 of 26
define absorption
when waves are absorbed by the material the waves are trying to pass through.
17 of 26
define reflection
the waves may bounce back from the material.
18 of 26
define transmissiom
the waves may travel through a material
19 of 26
explain how waves are reflected at a boundary.
angle of incidence = angle of reflection
20 of 26
what is specular reflection?
when parallel rays are reflected in a single direction.
21 of 26
what is diffuse reflection?
when parralell waves are reflected by a rough surface and the reflected waves are scattered in lots of different directions.
22 of 26
how are waves transmitte at a boundary between two different materials?
when a wave hits a boundary of two materials it can be transmitted through the new material.
23 of 26
defien the normal line
this is a line at 90 degrees to the boundary of the material. it is used to measure the angles of incidence, refraction and reflection.
24 of 26
define a wave front
an imaginary line drwn through the crest of a wave. they are perpendicular to the direction of the wave.
25 of 26
define refraction.
if it hits the boundary at an angle the light can change direction this is called refrction.
26 of 26

Other cards in this set

Card 2

Front

give examples of transverse waves.

Back

water waves, gamma, x rays & radio waves.

Card 3

Front

give examples of longitudinal waves.

Back

Preview of the front of card 3

Card 4

Front

define a transverse wave.

Back

Preview of the front of card 4

Card 5

Front

what is a wave?

Back

Preview of the front of card 5
View more cards

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