Waves

Question 1

Longitudinal Wave

Answer 1

wave that moves in the same direction as the oscillation of the medium’s particles.

Question 2

Transverse Wave

Answer 2

a wave where the movement of the medium’s particles is perpendicular to the directions of the wave’s travel

Question 3

Oscillate

Answer 3

to move or swing back and forth at a regular speed

Question 4

wave

Answer 4

a disturbance that transfers energy from one place to another

Question 5

What kind of wave can you create from a slinky?

Answer 5

transverse - the motion of the slinky is sideways to the motion along the slinky

Question 6

What kind of wave can be demonstrated with a rope?

Answer 6

transverse - the motion in the rope is perpendicular to the direction of the wave

Question 7

What kind of wave can be demonstrated with dominoes?

Answer 7

longitudinal - the dominoes fall in the same direction of the motion of the wave

Question 8

Reflection

Answer 8

the change in the direction of a wave as it bounces off an obstacle or surface, such as a mirror or body of water

Question 9

sound reflection

Answer 9

echo is a reflected sound produced by a wave that bounces off an object and returns toward the source of the sound

Question 10

Light reflection

Answer 10

when the human eye discerns colors, it sees the parts of the light spectrum reflected from an object

Question 11

refraction

Answer 11

when a wave meets the surface between two different materials or conditions, part of the wave reflects from the surface and another part continues but at a different speed

Question 12

Refraction is the

Answer 12

bending of waves due to a change in speed as the wave changes mediums

Question 13

sound refraction

Answer 13

we hear thunder when lightning is close to us, but we often do not for distant lightning because of refraction (sound travels slower at higher altitudes and bend away from the ground)

Question 14

Light refraction

Answer 14

prisms reflect light an allow us to see the wavelengths of a light in visible (white) light. When light passes through a prism, the light is refracted and separated into different wavelengths creating a rainbow.

Question 15

absorption

Answer 15

occurs when a given medium absorbs the wave’s energy which increases the temperature of the material.

Question 16

Sound absorption

Answer 16

when the wave’s energy transfers to the particles of matter the wave is passing through.
Example: during a thunderstorm you see lightning but do not hear thunder because the air molecules absorb the sound wave.

Question 17

light absorption

Answer 17

occurs when a light strikes a surface and the matter takes up the photon’s energy.
example: when light shines on an object and reflects color; a banana looks yellow because it reflects yellow and absorbs all other colors.

Question 18

diffraction

Answer 18

a change in the direction of waves as they pass through an opening or around an obstacle

Question 19

sound diffraction

Answer 19

when sitting in a classroom you can hear someone talking as they come down the hallway

Question 20

light diffraction

Answer 20

light from the classroom window spreads out through the room

Question 21

transmission

Answer 21

occurs when a wave passes through a given point or medium

Question 22

sound and light transmission

Answer 22

as sound and light waves pass through a medium the waves transfer some energy to the particles of the medium

Question 23

Law of Reflection

Answer 23

The angle of incidence is equal to the angle of reflection.

Question 24

echo

Answer 24

when a sound wave encounters a smooth, hard surface some of the energy of the wave may be reflected by the surface to travel in a different direction

Question 25

amplitude

Answer 25

total distance a wave moves from its resting position

Question 26

crest

Answer 26

highest point on a wave

Question 27

trough

Answer 27

valley or lowest point between crestsw

Question 28

wavelength

Answer 28

distance from any one point on a wave to a corresponding point on the next wave

Question 29

frequency

Answer 29

number of oscillations produced in a certain amount of time

Question 30

wave speed

Answer 30

meters per second