Waves Study Guide AK

advertisement
1.
Draw the wavelength between 2
ocean waves.
Wavelength
2.
Define the word frequency
The number of wavelengths that pass
a fixed point in a fixed period of time
3.
How can wavelength be
measured?
The distance between crests
4.
5.
Draw the amplitude in for a wave
created by a rope between 2
people
Draw a wave with a high frequency.
7.
Draw a wave where the
wavelengths are long
8.
What happens to the wave’s
frequency if its wavelength is
increased?
If the wavelength is increased the
frequency will decrease (inversely
proportional)
9.
Musical instruments produce high
and low pitches. How does the
wavelength of a high pitch compare
to wavelength of a low pitch?
Lower pitch has a longer wavelength
10. Musical instruments can play softly
or loudly. Relate the volume to the
amount of energy produced by the
instruments.
As energy increases sound gets
louder. As energy decreases sound
gets softer.
11. When you increase or decrease the
volume the TV which property of
the wave is changing?
You are changing the amplitude.
Increased volume=higher
amplitude; decreased
volume=lower amplitude
12. Create a model of a wave that
shows how the energy of a wave is
related to its’ amplitude.
6.
Draw a wave with a low frequency
When you increase the energy in
the wave (wave with greater
amplitude) you increase the
amplitude of the wave, a wave that
has less energy applied will have a
shorter/small amplitude
13. You observed a prism in one of the
wave rotation stations. Describe
how a prism works on light.
Light is bent and redirected as it
moves through the prism
14. What can cause light to keep from
moving in a straight line?
Coming into contact with another
object.
15. Provide a real life example of
absorption.
Answers may vary but anything
where light energy becomes
thermal energy. Flashlight shining
on a lab table.
16. Create a model of a system
showing how a wave is absorbed,
reflected, and transmitted. You
must include a title, labels
identifying parts of the drawing, use
scientific words, and include an
explanation of the drawing.
Answers may vary but model needs to
include absorption, reflection, and
transmission
17. What do waves transfer from place
to place?
Waves transfer energy not matter!
18. Compare light waves to sound
waves
Light waves are transverse waves
and do not require a medium to
move through (electromagnetic).
Sound waves are longitudinal
waves and do require a medium
(mechanical waves). They both can
absorb, reflect, or transmit. They
both have similar properties:
frequency, wavelength, and
amplitude.
19. Define a wave.
A repeating disturbance or vibration
that transfers or moves energy from
place to place without transporting
mass
20. Photography primarily involves
which type of wave behavior?
Reflection
21. Give an example from the waves
rotation lab that shows how waves
transfer energy when they interact
with matter.
Shining a flashlight on a lens,
making white rice dance, hitting a
coat hanger on a table, creating a
wave with a slinky
22. Define and draw a model of a
digital signal.
In digital signals transmission of
information is in binary format and
large amounts of data are stored as
strings of 1;s and 0’s.
23. Define and draw a model of an
analog signal.
In analog signals information is
translated into electric pulses of
varying amplitude.
24. Compare digital signals to analog
signals.
Both are used to transmit
information. In both the information
is transformed into electric signals.
In analog small fluctuations can
occur in the signal. Can cause
errors in communication with
analog. Digital errors are corrected
and do not cause disturbance in
communication.
25. Provide evidence to prove that
digital signals are more reliable than
analog signals.
Digital signals can transmit more
information without as many errors.
Download