Waves

Question 1

What is a wave?

Answer 1

A transfer of energy through a receptive pattern

Question 2

Transverse wave

Answer 2

Particles that move perpendicular to wave motion

Question 3

Longitudinal wave

Answer 3

Particles that move parallel to wave motion

Question 4

Wavelength

Answer 4

Blue arrow
-Distance from to next repeating

Question 5

Crest

Answer 5

Red dot
-point above equilibrium

Question 6

Trough

Answer 6

Pink dot
-Point below equilibrium

Question 7

Amplitude

Answer 7

Green arrow
-distance from equilibrium to max or min

Question 8

Compression

Answer 8

Yellow box
-particles are close

Question 9

Rarefraction

Answer 9

Purple box
-Particles are far apart

Question 10

Medium

Answer 10

a material that moves energy or light from one substance to another
EX = A child creates small waves in a puddle on a sidewalk by tapping his finger on the water surface 3 times a second.

Question 11

Mechanical wave

Answer 11

a wave that is an oscillation of matter and is responsible for the transfer of energy through a medium
EX = light, sound, waves in ocean

Question 12

Electromagnetic wave

Answer 12

When a light wave encounters an object, they are either transmitted, reflected, absorbed, refracted, polarized, diffracted, or scattered depending on the composition of the object and the wavelength of the light.

Question 13

Sound wave

Answer 13

Are longitudinal waves

Question 14

Inverse/proportional relationships

Answer 14

Inverse = Frequency and period

-time period and wavelength are proportional

Question 15

Eq for T (period)

Answer 15

T = total time / # of events

Question 16

Eq for frequency (hz)

Answer 16

f = # of events / total time

Question 17

2 Eq for speed (v)

Answer 17

V = distance / time

V = f * wavelength

Question 18

Eq for one

Answer 18

1 = f * T

Question 19

Resonance & Interference

Answer 19

When two or more things have the exact same frequency
-Increases the amplitude & motion, transfers energy
(In sync)

Question 20

Destructive Resonance

Answer 20

Energy is transferred to the same energy
-Can have too much energy
-Amplitude got really big

Question 21

Interference & Superposition

Answer 21

When two waves meet in the same material (same type of material)

Question 22

Constructive interference

Answer 22

Crest meets a crest or a trough meets a trough they get super!
-Adds amplitude

Question 23

Destructive interference

Answer 23

Crest meets trough cancels each other out
-Amplitude gets smaller

Question 24

Mechanical waves like sound, water waves, and earthquakes require a medium (material) to travel through (T/F)

Answer 24

True

Question 25

Reflection

Answer 25

Change of direction when it meets its boundary
-Waves BOUNCE off boundary

Question 26

Refraction

Answer 26

Refraction involves a change in speed and path a wave takes when it passes through a boundary instead of bouncing off as in reflection.
-Waves CHANGE DIRECTION due to medium (speed)

Question 27

Diffraction

Answer 27

The spreading of waves as it passes through/around objects
-Waves CURVE AROUND the edge of boundary