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Light and Sound Waves Flashcards | StudBud
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Light and Sound Waves
Light and Sound Waves
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#preapphysics #light&sound
Flashcards
35 cards
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Questions
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Answers
1
Loudness is measured in what unit?
musical notes
meters
decibels
seconds
2
When moving away from a fixed sound, the frequency of the sound
is equal to what the source emits
is diffused
is greater than what the source emits
is less than what the source emits
3
The shorter the wavelength, the ______ the amplitude.
lower
shorter
higher
longer
4
What is the name of the straight line that represents the path of travel for light?
a ray
a wave
a complement
the normal
5
We don’t see things, we see light __________ off of things.
deflecting
absorbed
bending
bouncing
6
As pitch of sound increases, what happens to frequency?
fades away
remains the same
decreases
increases
7
Waves usually transmit _______.
both matter and energy
energy only
neither matter nor energy
matter only
8
An illuminated body simply __________ light.
emits
bounces
reflects
absorbs
9
The frequency of sound waves is known as _____.
motion
disturbance
pitch
sound
10
Which of these is not a primary color?
red
yellow
blue
green
11
What is a pigment that absorbs only one color from white light?
secondary pigment
primary pigment
absorbed pigment
reflected pigment
12
How do sonar waves occur?
under water
through air
under ground
in the atmosphere
13
How many musical notes are needed to compose all songs?
12
14
8
10
14
Frequency is defined as _____.
speed multiplied by wavelength
wavelength multiplied by speed
wavelength over speed
speed over wavelength
15
Which of these is a reflected sound wave?
amplitude
echo
decibel
dead spot
16
Which of these is echo pictures when sound waves bounce off an object?
music sound
sonar
seismic sound
ultrasound
17
What kind of waves do musical instruments make?
seismic
light
sound
sonar
18
Which is a color formed by a pair of two primary colors?
complementary color
secondary pigment
secondary color
primary color
19
What is a specialized structure that catches sound?
radio
ear
light
slinky
20
What is the symbol for lumen, the unit of luminous flux?
lm
cd
cd
lx
21
What is the unit for Speed of Light?
Hz
m
m/s
seconds
22
Which of these is a transparent medium?
aquarium glass
steel
mirror
laundry
23
When a light hits a window, the light ___________ the window.
goes through
recoils through
removes grime
bounces off
24
How is a wave length measured?
centerline of a wave to top
from node to next node on centerline
crest to crest
centerline of a wave to bottom
25
Where on a graph is the crest of a wave found?
bottom of wave
length of wave
top of wave
middle line of wave
26
What is defined as “The absence of light”?
green
blue
white
black
27
Which is color from which all other colors can be derived?
secondary color
primary color
secondary pigment
complementary color
28
Which does sound travel the slowest through?
cold air
liquid
solid
hot air
29
Why is it hard to pick up an object from under water?
because the water is clear
because of the refraction of light
because if the speed of light
because of the reflection of light
30
A luminous body is one that _________ light.
emits
bounces
reflects
absorbs
31
Frequency is defined as…..
how high amplitude
how short waves are
how often waves repeat
how far waves travel
32
A blue shirt appears blue because:
all colors are absorbed including blue
all colors bounce off except blue
all colors are reflected except blue
all colors are absorbed except blue
33
What makes the frequency of a sound wave happen?
amplitude
source of sound
wavelength
medium
34
Which one does not travel as a wave?
traffic
light
energy
sound
35
Which is two colors of light that when added together produce white light?
secondary color
complementary color
primary color
secondary pigment
