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Cards (47)
What is the definition of frequency?
Number of wave cycles
per second
How is wavelength measured?
In
meters
(m)
What is the relationship between wavelength and frequency of electromagnetic radiation?
Wavelength and frequency are inversely
proportional
As wavelength
increases
, frequency decreases
As wavelength decreases, frequency increases
How can you calculate the frequency of electromagnetic radiation if you know its wavelength?
Use the
formula
:
f
=
f =
f
=
c
/
λ
c/\lambda
c
/
λ
f = frequency
c =
speed of light
(
3 x 10^8
m/s)
λ = wavelength
If a rope is moved up and down to create a wave, what does the amplitude represent?
Height of the wave's peak from
center
In the equation
λ
=
\lambda =
λ
=
v
f
\frac{v}{f}
f
v
, what does v represent?
Wave speed
What are the components of the frequency definition table?
Term:
Frequency
Definition: Number of wave
cycles
per second
Unit:
Hertz (Hz)
Example:
5
texts
per hour
Why does the frequency of electromagnetic radiation change as the wavelength changes?
Because the
speed
of electromagnetic radiation is constant
What does the equation
λ
=
\lambda =
λ
=
v
f
\frac{v}{f}
f
v
represent?
Relationship between wavelength,
speed
, and frequency.
What is the definition of wavelength?
Distance between two
corresponding
points on
adjacent
waves
How does the frequency of electromagnetic radiation change as the wavelength increases?
The frequency
decreases
as the wavelength
increases
What is wave intensity proportional to?
Square of the
amplitude
What is the relationship between wavelength and frequency?
They are
inversely
related.
What is the relationship between the amplitude (ΔE) and the wavelength of electromagnetic radiation?
The
amplitude
(ΔE) does
not
depend on the
wavelength
What is the relationship between amplitude and intensity shown in the image?
Amplitude refers to the maximum
displacement
from the midpoint of the wave
Intensity refers to the power or energy per unit area of the wave
The image shows that amplitude and intensity are related, with higher amplitudes corresponding to higher intensities
How does an increase in wavelength affect frequency?
It
decreases
frequency.
In the equation
λ
=
\lambda =
λ
=
v
f
\frac{v}{f}
f
v
, what does λ represent?
Wavelength
What is the relationship between amplitude and wave intensity?
Bigger amplitude means stronger wave intensity
Increased amplitude results in more
energy
Example: louder sounds have larger
amplitudes
How can frequency be illustrated in everyday life?
By counting how often a friend
texts
In the equation
λ
=
\lambda =
λ
=
v
f
\frac{v}{f}
f
v
, what does f represent?
Frequency
If a friend texts you 5 times in an hour, what is the frequency of texts?
5
Hz
How does the wavelength of electromagnetic radiation affect its frequency?
Long wavelength corresponds to low frequency
Short wavelength corresponds to high frequency
The product of wavelength and frequency is
constant
How do shorter wavelengths affect frequency according to the study material?
They result in
higher
frequencies.
How does doubling the amplitude affect wave intensity?
It
quadruples
the wave intensity
What happens to the sound when you whisper?
The sound becomes quieter due to smaller
amplitude
How do longer wavelengths affect frequency according to the study material?
They result in
lower
frequencies.
What are the definitions and units of key wave terms?
Amplitude
:
Maximum
displacement from rest position (Meters)
Wavelength
: Distance between two
corresponding
points on adjacent waves (Meters)
Frequency
: Number of wave
cycles
per second (
Hertz
)
What does the graph in Figure 1 represent?
The graph shows the variation of
amplitude
and
intensity
over time
The blue line represents the amplitude of the wave
The red line represents the intensity of the wave
What is the significance of the relationship between wavelength and frequency?
Inversely
related: as one increases, the other decreases
Expressed by the
equation
λ
=
\lambda =
λ
=
v
f
\frac{v}{f}
f
v
Affects wave
behavior
and
characteristics
How does a bigger wave relate to energy?
A
bigger
wave has
more
energy
What is the definition of amplitude in waves?
Maximum
displacement
from
rest position
What is wave intensity?
How
strong
a wave is
What insights about wave behavior can be gained from the patterns observed in the graph?
The periodic fluctuations in
amplitude
and
intensity
suggest the wave is oscillating
The relative magnitudes of the amplitude and intensity peaks provide information about the wave's
energy
and
propagation
The overall trends in the graph could indicate changes in the wave source or
medium
over time
What does frequency measure?
Number of wave
cycles
per second
In which unit is frequency measured?
Hertz (Hz)
What is the name of the figure shown in the image?
Figure 1
What happens to energy when wave intensity increases?
It
carries
more
energy
How is amplitude measured?
In
meters
(m)
What is the unit of measurement for wavelength?
Meters
(m)
What does amplitude indicate about a wave?
How
high
or
low
the wave gets
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