Waves

Question 1

What are waves?

Answer 1

Any disturbance that transmits energy through matter or empty space 

Question 2

Energy is carried _______ from its source

Answer 2

Away

Question 3

The material the wave moves through is ___ transmitted

Answer 3

Not

Question 4

Medium

Answer 4

The material or substance a mechanical wave travels through

Question 5

How do waves transfer energy through a medium?

Answer 5

When a particle vibrates, its energy is past to the next particle, which passes to the next particle like dominoes
Energy is transmitted through a medium

Question 6

Two main groups of waves

Answer 6

Mechanical and electromagnetic

Question 7

Must have a medium to travel

Answer 7

Mechanical

Question 8

Does not need a medium to travel, and may go through empty space or matter, and all travel as a traverse wave.

Answer 8

Electromagnetic waves

Question 9

• particles vibrate in an up-and-down motion
• Move at right angles relative to the direction of the wave

Answer 9

Transverse

Question 10

• particles of the medium vibrate back-and-forth along the path of the wave

Answer 10

Longitudinal

Question 11

• Combination of both transverse and longitudinal
• Forms convections underneath

Answer 11

Surface waves

Question 12

What do seismic waves and sound waves have in common

Answer 12

They are mechanical waves

Question 13

What does it mean when the waves amplitude increases?

Answer 13

It’s carrying more energy

Question 14

What medium do seismic waves travel through?

Answer 14

The ground

Question 15

What do waves carry from place to place?

Answer 15

Energy, but not matter.

Question 16

In a wave, what happens to a molecule after it passes energy onto the next molecule in the chain?

Answer 16

It returns to its original resting position

Question 17

How are electromagnetic waves different from mechanical waves?

Answer 17

Electromagnetic waves can travel through empty space; mechanical waves can’t

Question 18

Which of the following are electromagnetic waves?
- Water waves
- radio waves
- sound waves
- Seismic waves

Answer 18

Radio waves

Question 19

What type of waves carry energy at a right angle to the direction of the energy flow?

Answer 19

Transverse waves

Question 20

How is a wavelength measured?

Answer 20

From crest to crest

Question 21

What can you infer about a wave with a short wavelength?

Answer 21

It has a high frequency

Question 22

How many waves pass a certain point in a second

Answer 22

Frequency

Question 23

Waves that carry energy and matter back-and-forth in the same direction

Answer 23

Compressional/longitudinal

Question 24

A form of energy that travels as waves in particles or photons

Answer 24

Light

Question 25

The bending in spreading of waves usually around an obstacle

Answer 25

Diffraction

Question 26

Example: wave spread out to form a single source not all going in a straight line; if a person is in a room at the sound spreads out, so you can hear it all around the room.

Answer 26

Diffraction

Question 27

When light enters a new material it bends Light changes fees as it goes through materials of different densities Denser-> slower -> shift in direction

Answer 27

Refraction

Question 28

Angle of refraction

Answer 28

The amount of the wave bends

Question 29

Different colors of light have ____________ of refraction.

Answer 29

Different angles

Question 30

__________ happen when all the colors in white light refract at different angles through water droplets.

Answer 30

Rainbows

Question 31

If there is more than one hole, the waves overlap on the other side, making a predictable interference pattern

Answer 31

Diffraction

Question 32

And effect that occurs when light hits, smooth, shiny surfaces - The light changes direction in a minor image is reflected.

Answer 32

Reflection

Question 33

Angle of incidence

Answer 33

The angle at which light hits a surface

Question 34

Angle of reflection

Answer 34

The angle at which light bounces off a surface

Question 35

When light hits, a smooth, shiny surface reflects at __________ angle at which it came in

Answer 35

The same

Question 36

Smooth surfaces reflect most light Rough Surfaces ________ light

Question 37

Certain substances absorb light, resulting in different perceptive colors from different substances

Answer 37

Just know that

Question 38

What kind of wave is a ripple in water an example of?

Answer 38

Surface waves

Question 39

What kind of wave is a slinky an example of?

Answer 39

Longitudinal

Question 40

Four types of wave interactions

Answer 40

Reflection, refraction, diffraction, resonance

Question 41

Bouncing back

Answer 41

Reflection

Question 42

Bending of a wave when it changes speed as it enters a new medium

Answer 42

Refraction

Question 43

Wave speed equals

Answer 43

Frequency times wave length

Question 44

Speed for mechanical waves

Answer 44

Move fastest in solids and slowest and gases

Question 45

Speed for electromagnetic waves

Answer 45

Move fastest in empty space and slowest in solids

Question 46

Two or more waves combine to make a single wave

Answer 46

Interference

Question 47

Constructive interference

Answer 47

Build, larger amplitude

Question 48

Destructive interference

Answer 48

Cancel out to make zero amplitude

Question 49

Two ways with the same wavelength, traveling in opposite directions and overlap

Answer 49

Standing waves

Question 50

Two objects naturally vibrate at the same frequency

Answer 50

Resonance