Fill in the blank:
Reflection occurs when a wave meets a __________.
What is boundary?
100
Fill in the blank.
Diffraction is the ___________ of waves as they pass an edge.
What is "bending"?
100
What is the difference between diffraction and refraction? In other words, what is required for these phenomenas to occur? (1-2 word answer for each.)
What is "diffraction - opening, refraction - new medium"?
100
What is produced with the interference of sound waves waves?
a. colorful light waves
b. beats
c. nodes
d. standing wave
What is "b. beats"?
100
Fill in the blank.
Antinodes are points of complete constructive interference where there is ___________ vibration.
What is "maximum"?
200
Describe what may happen when ripples on a pond encounter a large rock in the water.
What is "the ripples will encounter the large rock and will be reflected off the rock because they cannot pass through, sending the ripples in the opposite direction"?
200
Due to diffraction, shadows never have perfectly ________ ________. (2 words)
What is "sharp edges"?
200
How is a spoon in water an example of refraction? Explain in a few words - sentence.
What is "the light waves reach your eyes from two different directions"?
200
What is produced with the interference of light waves?
a. colorful light waves
b. low pitched sound waves
c. beats
d. antinodes
What is "a. colorful light waves"?
200
Fill in the blank.
Nodes are points of complete descructive interference where there is ___________ vibration.
What is "no"?
300
What is an example of a reflection?
What is 1) water waves bouncing off a boat 2) light reflected off a mirror?
300
Explain how sound waves diffract after they go through the opening of a door.
What is "the sound waves spread out into the space beyond the door." This causes the person who is near the door on the outside to hear sounds from inside the room.
300
What two factors change when a wave enters a new medium?
What is "bends slightly and changes speed"?
300
Fill in the blank.
Destructive interference _____________ amplitude.
What is "decreases"?
300
Fill in the blank.
Standing waves have ___________ and _____________.
What is "nodes ; antinodes"?
400
True or false?
For reflection to occur, there does not have to be a boundary present.
What is False? There has to be a boundary present.
400
What two factors does the amount of diffraction of a wave depend on?
What is wavelength and size of opening?
400
True or False?
All waves are refracted when they pass from one medium to another at an angle.
What is True?
400
Fill in the blank.
Constructive interference ______________ amplitude.
What is "increases"?
400
What kind of pattern does a standing wave cause the medium to vibrate in?
What is "a stationary pattern?" It resembles a loop or a series of loops.
500
Define a reflection.
What is "the bouncing back of a ray of light, sound, or heat when the ray hits a surface that it does not go through"?
500
Define diffraction.
What is "a change in the direction of a wave when the wave finds an obstacle or an edge, such as an opening"?
500
Define refraction.
What is "the bending of a waves as they pass from one medium to another"?
500
Define interference.
What is "the combination of two or more waves that results in a single wave"?
500
Fill in the blank.
A standing wave results from interference between a wave and its ______________ __________. (2 words)