Name _________________________________
Energy Transfer Through Waves and Heat
1. Notes from PowerPoint on Waves
(5 pts per page)
_______/20
2. Heat Transfer Notes from PowerPoint
_______/5
3. Examples of Heat Transfer Worksheet.
_______/10
4. Waves Summary concept map
_______/25
5. Waves Video Guide
_______/20
6. Waves Reinforcement Worksheet
_______/17
7. Test Review
_______/57
State Core Objectives for this unit
Objective 1: Investigate the transfer of energy through various materials.
a. Relate the energy of a wave to wavelength.
b. Compare the transfer of energy (e.g., sound, light, earthquake waves, heat)
through various mediums.
c. Describe the spread of energy away from an energy-producing source.
d. Compare the transfer of heat by conduction, convection, and radiation and
provide examples of each.
e. Demonstrate how white light can be separated into the visible color spectrum.
Wave Notes
Energy is defined as the __________________________________________________________
Work is using ___________ to move something
A wave is disturbance that transfers________________ from place to place
Most waves need a _______________________ or substance to travel through.
_______________________________________________ can all be mediums.
A moving object can transfer energy to a _________________ producing _______________
Waves travel out ________________________ from the disturbance
Mechanical Waves
Waves that REQUIRE a ____________ through which to travel are called mechanical waves
Mechanical waves do not carry the medium they travel through with them.


Waves on the ocean do not move the water molecules with them.
Molecules stay in place, _________________________________________________
Mechanical waves are produced when ___________________________________________________
___________________________________________________________________________________
Mechanical waves are classified by ______________________________________________________
Two types of mechanical waves are
1.
2.
Transverse Waves
Transverse waves move through the medium at a ___________________________________________
A transverse waves looks like this:
Examples of Transverse Waves
1.
2.
3.
Longitudinal waves
Longitudinal waves move the medium _____________________________________________________
Looks like a __________________________________________________________________________
____________________________ : when the coils or particles are close together
____________________________ : when the coils or particles are farther apart
A longitudinal wave looks like this (label compression and rarefaction)
Examples:
1.
2.
Properties of Waves – Draw and Label the wave.
Crest:________________________________________
Trough________________________________________
Midpoint of the wave – where the wave is at rest
Amplitude:___________________________________________________________________
The higher the amplitude the _____________________________________________________________
Amplitude of transverse waves: ___________________________________________________
Amplitude of longitudinal waves: __________________________________________________
Wavelength is the distance ______________________________________
The _______________ of a wave depends on the _______________________
Shorter wavelengths = __________________________
Frequency
Number of ______________________________ that pass a given point in a certain amount of time.
If two waves passes by every second, the frequency is ____________________________
Frequency is measured in _______________ so _________________
If 20 waves pass a point in 4 seconds – what is the frequency?
Wave Speed
Light waves travel ______________ than sound waves (___________________________________)
Speed = ______________________________________ in a given length of time
Formulas for wave speed, frequency and wavelength
If you increase the ______________________, the wavelength ___________________ to keep the same
wave speed. Higher frequency and shorter wavelengths = _______________________
Sound waves at a concert reach your ears at the __________time. Lower notes have ________
wavelengths, High notes (higher frequency) have _______________ wavelengths , but they all have
______________________________ .
Math Practice:
1. A wave has a frequency of 5 Hz. It has a length of 3 meters. What is the wave speed?
2. A wave has a speed of 100 m/sec. It has a length of 5 meters. What is the frequency?
3. A wave has a speed of 50 m/sec. It has a frequency of 10 Hz. What is the wavelength?
4. 600 waves pass a point in 10 seconds. What is the frequency of the wave?
Electromagnetic Waves
Transverse waves that transfers __________________________________________________________
Moves at the speed of ___________ in a vacuum (_______________________________________)
Do not require a ______________________ so they can travel through _________________________
All electromagnetic waves travel at the same __________________ but they have different
___________________________________________________________
The electromagnetic spectrum organizes electromagnetic waves in _____________________________
Electromagnetic energy is also called ______________________________________________________
Light behaves like _________ and _________________________________________ at the same time
Increase frequency = __________________________________________________________________
Electromagnetic spectrum is made of R M I V U X G (Rich Men In Vegas Use Xbox Games)
1.
2.
3.
4.
5.
6.
7.
White light can be separated into the visible color spectrum as the waves are _________ or
___________________ through a_____________or water drops
_____ wavelengths bend the least, and ______ bend the most. That is why red is on the top of a
rainbow. ROY G BIV
Thermal energy
Heat is _____________________ moving from a ___________________________
to a __________________________.
Energy depends on the movement of the _______________
Atoms move faster = ___________________ heat energy
Atoms move slower = ____________________ heat energy
Specific heat is _______________________________________________________________________
_________________________ The temperature does not increase at the same rate for everything.
Heat Transfer
1. ________________ transfer of heat energy through ___________________ Molecules move faster
as they heat and bump into other molecules causing them to move.
Examples:
2. _________________ transfer of heat in __________________________. As molecules heat the move
faster they move apart. This makes them less dense and they rise. When they cool off they move closer
making them more dense and they sink.
Examples:
3. _________________ transfer of heat energy through space as electromagnetic waves. Infra red
waves are felt as heat. All electromagnetic waves are forms of radiation.
Examples:
Examples of Heat Transfer Worksheet.
_____/10 points
 Provide examples of each type of heat transfer in the following situations.
Conduction:
Convection:
Radiation
Cooking on a stove
Conduction:
Convection:
Radiation
Volcano Erupting
Conduction:
Convection:
Radiation
In your house
Wave Summary Concept Map
__________/ 25 points
Waves
Mechanical
must have a ___________
to transfer the energy
Electromagnetic
Do not require a
______________
__
_________________Waves
Move at the speed of
_____________
in a vacuum
_________________Waves
move up and down
_______________Waves
move back & forth
Spread out
part called
___________
__
Low part
called the
___________
__
High part
called the
___________
__
Examples:
Close together
parts called
_____________
Examples:
Examples:
1.
2.
1. ______ Waves in an
Earthquake
1. ______ Waves in an
Earthquake
3.
2.
2.
4.
5.
6.
Circle the correct choice below.
7.
The more Energy in a wave, the (higher or lower) the frequency
and the (longer or shorter) the wavelength.
___________ can be used
to break white light into
colors. ROY G BIV
Waves with high Amplitudes also have ( high or low ) energy.
Waves Video Viewing Guide
________/ 20 pts
1. A ____________________ is a disturbance that carries energy through matter or medium.
2. A wave carries ________________ from one place to another through a medium.
3. What force creates ocean waves?___________________
4. _____________________ is necessary to produce waves.
5. The substance or matter through which a wave travels is called a _____________________.
6. ____________________ waves require a medium through which to travel. Sound is an
example.
7. _____________________________ do not require a medium. Light waves are an example.
8. _______________________ is the distance from one point on a wave to an identical point on
the next wave.
9. _____________________ is the number of complete waves per unit of time.
Measured in units called ______
10. ______________________ is the height of the wave and is a measure of the amount of
energy carried by a wave.
11. A ____________________ wave is always at a right angle to the direction of the wave.
12. _________________________ waves (like sound waves) move with compressions and
rarefactions.
13. ____________________ varies with the type of waves and the medium through which it
travels.
14. Write the formula to calculate wave speed.
_________________________________________________
15. _______________________ is the bouncing back of a wave after it strikes a boundary.
(echo, mirrors)
16. ____________________ is the bending of light due to a change in speed.
17. ____________________ bending of light around an object (like around a corner)
18. When two waves meet and combine to form one wave it is called __________________.
19. List 2 waves that waves are important in your life.
Waves Reinforcement Worksheet
________/ 17 points both sides
1. What causes waves?
2. Using a spring as an example, describe the compressions and
rarefactions of a wave.
3. Label the trough and crest of the wave in the illustration
4. What medium is the wave in the picture traveling through?
5. What is the source of energy causing the wave?
6. How do you know the wave is a mechanical wave?
7. What type of mechanical wave is this?
8. Label each of the waves shown below as longitudinal or transverse
______________________
_______________________
Test Review ______/ 57 pts
1. What is a disturbance that transfers energy from one place to
another? (1pt)
2. Draw a transverse wave. Label: Wavelength, Amplitude, Crest,
Trough (4pts)
11. About how many times faster are light waves than sound
waves? (1pt)
12. What is the formula for wave speed? (1pt)
13. In a vacuum, all electromagnetic waves have the same what?
(1pt)
3. Give 3 examples of transverse waves (3pts)
14. Which kind of waves have some electrical properties and some
magnetic properties? (1pt)
4. Draw a longitudinal wave. Label: Compression, Rarefaction (2
pts)
15. List the waves on the electromagnetic (EM) spectrum in order
from lowest energy to highest energy. (2pts)
5. Give 2 examples of longitudinal waves (2pts)
16. Which EM waves have the lowest frequency? (1pt)
6. Explain how a medium transfers wave energy (1pt)
7. What is frequency?(1pt)
8. What units is frequency measured in? (1pt)
9. The range of electromagnetic waves placed in order from low
frequency to high frequency is called what? (1pt)
10. Why do you see lightening before you hear thunder? (1pt)
17. Which EM waves have the shortest wavelength? (1pt)
18. List the colors of visible light from Longest Wavelength to
Shortest Wavelength (2pts)
Which light has the lowest Frequency? (1pt)
19. What kind of waves have particles that move at right angles to
the direction of travel? (1pt)
20. What kind of waves have particles that move parallel to the
direction of travel? (1pt)
31. How does the amount of energy in an earthquake wave affect
the amplitude of the wave and damage caused? (1pt)
21. What kind of waves are P-waves from an earthquake? (1pt)
22. What kind of waves are S- waves from an earthquake?
(1pt)
32. What type of waves transfer energy from Earth’s interior to the
surface in an earthquake. (1pt)
23. Can sound waves travel through the vacuum of space? (why or
why not?) (2pts)
24. Why can light energy from the sun travel through space and
reach the earth? (1pt)
33. Explain how volcanoes transfer energy from Earth’s interior to
the surface. (1pt)
25. Explain heat transfer by conduction. Give 3 examples (4pt)
34. Is a metals ability to conduct heat energy a physical or chemical
property? (1pt)
26. Explain heat transfer by convection. Give 3 examples (4pt)
35. Is popping popcorn in a microwave a physical or chemical
change? (1pt)
27. Explain heat transfer by radiation. Give 3 examples (4pts)
36. When heat energy is added to a substance, how does that
affect the motion of the molecules? (1pt)
Application from Previous Units
28. What type of heat transfer causes plate movement? (1pt)
29. What type of rocks are created by the heat and pressure of
plate movement and earthquakes? (1pt)
30. What type of rocks are created by volcanoes? (1pt)
37. When popcorn is popped in a microwave, how does the total
amount of mass after the reaction compare to the total amount of
mass before the reaction? (1pt)
This is an example of the law of conservation of _______(1pt).