Waves

Question 1

Wave

Answer 1

A disturbance that transfers energy from one place to another
(does not transfer mass)

Question 2

Transverse Waves

Answer 2

• A wave disturbance at right angles to the direction it is moving
• Can move through both matter and a vacuum
  (I.E. Light)

Question 3

Longtitudinal Waves

Answer 3

*A wave that moves back
and forth in the same
direction the wave is
traveling
* Can only move through
matter
(I.E. Sound)
(Travels faster in denser masses, opposite of Transverse Waves)

Question 4

Crest

Answer 4

Top of wave

Question 5

Trough

Answer 5

Bottom of wave

Question 6

Amplitude

Answer 6

resting point to crest/trough

Question 7

Wavelength

Answer 7

Trough to trough/ crest to crest

Question 8

____ amplitude = _____ energy

Answer 8

More

Question 9

Frequency

Answer 9

the number of wavelengths that pass a point each
second

Question 10

EM waves travel through empty space at ________

Answer 10

3 x 10 to the 8th m/s (speed of
light) (used as c in equations)

Question 11

v = _______

Answer 11

frequency x lambda (wavelength)

Question 12

Reflection

Answer 12

When a wave bounces off of an object at the same angle that it hit
the surface

Question 13

The ________ hit the surface at an angle.

Answer 13

incident rays

Question 14

The ____________ bounce off at the same angle as the incident rays from the
normal.

Answer 14

reflective rays

Question 15

Transverse waves ________ in speed as they move from a less
dense to a denser medium.

Answer 15

decrease

Question 16

Refraction

Answer 16

The change in direction and speed of a wave as it moves from one
medium to a different medium (causing it to bend in some form)

Question 17

Rainbows

Answer 17

When light waves make contact with a water droplet, the light
slows down and refracts (bends).
->The light wave is then reflected off the back of the water droplet
and exits the water droplet.
->The light wave is then refracted again as it exits, showing all the
colors of the rainbow in order of their wavelength (longest to
shortest).

Question 18

Double Rainbows

Answer 18

When the light reflects twice off of the raindrop

Question 19

What is the shape of a rainbow?

Answer 19

Full circle

Question 20

How do prisms work?

Answer 20

As the light enters a
new medium (enters
the glass prism as it
leaves the air) the
light slows down.
-> It bends as it slows
down, scattering the
light into many
colors, then refracts again out the prism causing the rainbow to appear