Scuencs

Question 1

Wave

Answer 1

a repeating disturbance that transfers energy from
one place to another.

Question 2

Pulse

Answer 2

as a wave travels, energy is transferred. A pulse is
formed when the energy is transferred one time
only.

Question 3

Does matter travel with a wave?

Answer 3

A wave does NOT transfer matter. The matter in which a wave travels does not
move along with it. For example, waves on a
pond move towards the shore, but the bug only
bobs up and down due to a small disturbance.

Question 4

In what direction does a wave transfer energy?

Answer 4

A wave transfers energy in the direction that the
wave travels.

Question 5

What is the difference between a pulse and a repeating
movement wave pattern?

Answer 5

A wave pulse is formed when energy is transferred at one
time. (Ex: plucking a guitar string)
A repeating movement wave pattern is when energy is
transferred in a repeating pattern. (Ex: heart rate
monitor)

Question 6

Transverse

Answer 6

­particles vibrate perpendicularly (up and down) to the
the direction the wave travels.

Question 7

Longitudinal

Answer 7

­particles vibrate parallel to the direction the wave travels.

Question 8

Compression

Answer 8

­an area where the coils are close together.

Question 9

Rarefaction

Answer 9

­an area of a wave where the coils are spread out.

Question 10

Crest

Answer 10

the highest point of the wave.

Question 11

Trough

Answer 11

the lowest point of the wave.

Question 12

Surface wave

Answer 12

­a combination of longitudinal waves and transverse
waves. A ripple on a pond is an example of this
combined wave type.

Question 13

Explain how waves move in an Earthquake.

Answer 13

Waves in an earthquake are both
transverse and longitudinal.
Longitudinal waves travel faster than
transverse waves. They arrive first, and
the transverse waves arrive second.
The transverse waves are usually more
destructive.

Question 14

Blastwave

Answer 14

­a high­pressure wave that radiates out with great energy
from the center of an explosion.

Question 15

Amplitude

Answer 15

­a measure of how far a particle in the medium moves away
from its normal rest position. Amplitude is half of the
difference between the crest and the trough.

Question 16

Wavelength

Answer 16

­the distance from any point on a wave to an identical point on
the next wave pulse. Wavelength measures the length of one
cycle, or repetition, of a wave.

Question 17

Frequency

Answer 17

­the number of waves produced in a set amount of time.

Question 18

Hertz

Answer 18

the unit of measure that FREQUENCY is usually expressed
in. (Hz).

Question 19

Wave speed

Answer 19

­the rate at which a wave travels.
*It can be calculated by multiplying wavelength and frequency.

Question 20

Using the formula for wave speed, what
would the wave speed be if the wave has a
wavelength of 6m and a frequency of 5Hz?
(multiply wavelength by frequency and don’t
forget to label)

Answer 20

v = 6m x 5 Hz = 30m/s

Question 21

What is the amplitude of a wave dependant
on?

Answer 21

The amplitude of a wave is
dependant on energy.

Question 22

Which carries more energy, a wave with a
large amplitude or a wave with a small
amplitude?

Answer 22

A wave with a large amplitude
carries more energy than a wave
with a small amplitude.

Question 23

To determine the wave speed of a wave that has a wavelength
of 5m and a frequency of 4 Hz, replace the λ and f with the
values given and solve: v = 5m x 4Hz = 20 m/s.

Answer 23

v = λ x f
v = 5m x 4Hz
v = 20 m/s

Question 24

Medium

Answer 24

­a material through which the energy of the wave
moves from one place to another. The medium can
be air, water, steel, or any other material.

Question 25

mechanical wave

Answer 25

a wave that travels through a medium due to the
motion of matter. Sound is an example.

Question 26

sound wave

Answer 26

a mechanical wave caused by the vibration of
particles as the waves travel through a medium. Can
travel through solids, liquids, or gasses. Travels
fastest through solids.

Question 27

What causes a mechanical wave to travel?

Answer 27

A mechanical wave travels through a substance
due to the physical motion of the medium itself.

Question 28

After re-watching the video on page 25, how would you
describe the motion of the particles on each kind of wave?

Answer 28

The transverse wave travels from left to right. The particles
move up and down as the wave travels to the right. This
movement is similar to the way waves are commonly
graphed.
This longitudinal wave travels from left to right. The
particles move right and left as the wave travels to the right.
The peaks and troughs of the wave correspond to high and
low concentrations of particles.

Question 29

Sound travels at different speeds and in different
materials. Different materials have particles with different
sizes and shapes. How might this affect wave speed?

Answer 29

Wave speed will change based on the type and
arrangement of media particles. Sounds travels fastest in
solids.

Question 30

How does amplitude affect volume? How does frequency
affect pitch?

Answer 30

The higher the amplitude the louder the sound
will be.
The higher the frequency is the higher the pitch
will be.