MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Which of the above tuning forks will generate the lowest pitch?

a. A

b. B

c. C

d. D

Correct Answer: d

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

What would happen if you reduced the amplitude of a sound wave?

a. the sound would be louder

b. the sound would be softer

c. the sound would be at a higher pitch

d. the sound would be at a lower pitch

Correct Answer: b

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

What would happen if you reduced the frequency of a sound wave?

a. the sound would be louder

b. the sound would be softer

c. the sound would be at a higher pitch

d. the sound would be at a lower pitch

Correct Answer: d

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Which of these explains why you see the explosion then hear the boom of fireworks?

a. sound waves travel faster in air than light waves

b. light waves travel faster in air than sound waves

c. the explosion produces the light wave before it produces the sound wave

d. the explosion produces the sound wave before it produces the light wave

Correct Answer: b

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Which of these describes the movement of the medium from a sound wave?

a. forward and backward parallel to the direction of the wave

b. side to side perpendicular to the direction of the wave

c. rolling motion parallel to the direction of the wave

d. it depends on the particular medium

Correct Answer: a

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Why does a prism separate white light into the rainbow colors?

a. different wavelengths of light are bent different amounts

b. the prism acts differently on waves of different amplitude

c. different speeds of light are affected differently

d. the prism changes the amplitude of each of the wavelengths

Correct Answer: a

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

During an earthquake, the land can begin to lift and fall. What type of wave would this represent?

a. longitudinal

b. surface wave

c. transverse

d. wavelength

Correct Answer: b

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Which of these best describes how energy spreads from an energy-producing source?

a. like dominoes falling in a line

b. like a boulder rolling down a hill, going faster and faster

c. like rings of water coming from a rock dropped in water

d. like layers of an onion from the center going out

Correct Answer: d

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Which of these is an example of how energy spreads from an energy-producing source?

a. a glass of water spilled on the floor

b. light from a candle

c. a laser beam reflected by a mirror

d. a flame burning a piece of paper

Correct Answer: b

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Which wavelength of light is bent most by a prism?

a. yellow

b. violet

c. red

d. green

Correct Answer: b

MC	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

What happens when red light shines on a prism?

a. it changes the color of the light into blue and green

b. it changes the direction of the beam and the color

c. it makes the light reflect back to the opposite direction

d. it changes the direction of the light but not the color

Correct Answer: d

I	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

1. Study the drawings above. If these represent three electromagnetic (light) waves, how could you make wave A look more like wave C?

a. decrease the amplitude

b. increase the amplitude

c. decrease the frequency

d. increase the frequency

2. What would need to be changed, to make wave A look more like wave B?

a. decrease the amplitude

b. increase the amplitude

c. decrease the frequency

d. increase the frequency

3. How are wave A and wave C similar?

a. both have the same frequency

b. both have the same amplitude

c. both have the same wavelength

d. wave C has half the amplitude of wave A

Correct Answers:

1. d

2. a

3. b

I	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

1. What would wave A look like if you increased its amplitude?

a. A

b. B

c. C

d. D

2. What would wave D look like if you increased its frequency?

a. A

b. B

c. C

d. D

3. What would wave C look like if you decreased its wavelength?

a. A

b. B

c. C

d. D

Correct Answers:

1. b

2. b

3. a

I	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Suppose there is an iron pipe that is 3 miles long. It follows the base of a hill so that one end cannot be seen from the other end of the pipe.

1. If you are standing on one end of the pipe, and there is an explosion at the other end of the pipe, how would you first find out about the explosion?

a. you hear the noise of the explosion

b. another worker phones you on his cell phone

c. you feel the vibrations in the pipe

d. you see smoke rising from the blast

2. Suppose the pipe is straight, and not curved around the hill, so that you have a view of the far end of the pipe. If an explosion were to happen, would you find out about it differently?

a. no, because sound travels faster in a lead pipe than in air

b. no, because smoke would be more visible now

c. yes, because sound travels faster than cell phone air waves

d. yes, because light travels faster than sound

Correct Answers:

1. c

2. d

I	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Refer to the above glass filled with water for the following question:

What would need to be done to this glass in order to lower the pitch?

a. Narrow the mouth of the glass.

b. Widen the mouth of the glass.

c. Raise the level of water.

d. Lower the level of water.

Correct Answer: d

I	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

As the teacher played music on the flame tube, different wave patterns emerged.

Questions:

1. Which pattern(s) would probably show a loud volume?

2. Which pattern(s) would best show a tuba?

3. Which pattern(s) would best show a flute?

4. What type of wave do the flames represent?

Correct Answers:

1. B & D

2. C & D

3. A & B

4. Transverse wave

I	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

You have just received a new flashlight from your Aunt. You turn off all the lights and turn the flashlight on in your room. You notice as you shine it against the wall it makes a large circle, but as you approach the wall, the circle of lights gets smaller. Answer the following questions about this.

1. Why is the circle of light on the wall larger when you are farther away and smaller when you are near?

a. The light spreads in all directions from the light bulb of the flashlight.

b. The light travels faster the farther you are away from the wall.

c. There are more particles of light the farther you are away from the wall, so they make a larger circle.

d. The closer to the wall you are, the more the light waves are attracted to each other.

2. Predict which circle of light would be brighter, the small circle when you are near the wall or the large circle when you are farther from the wall.

a. Both are the same since they flashlight is brand new.

b. It would be different depending on what was on the surface of the wall, like light paint, dark paint, or wallpaper.

c. The small circle would be brighter.

d. The large circle would be brighter.

3. After you have played with your flashlight for several days, you notice that the light has become dimmer. Why?

a. The batteries are less able to generate the electrical current.

b. The switch doesnÕt work as well after so much use.

c. The bulb cannot produce as much light because it is weakened.

d. The whole flashlight is older now.

Correct Answers:

1. a

2. c

3. a

E	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Describe the differences in the way sound travels through solids, liquids, and gases.   Explain the reasons for these differences:

Scoring Guide

4 pts The student shows exceptional through and insight.  At least 2 characteristics of how sound travels through each medium are clearly identified.

3 pts The student shows good thought and insight. At least 1 characteristic of how sound travels through each medium is clearly identified.

2 pts The student shows fair thought and insight. The student can clearly describe how sound travels through at least two of the mediums.

1 pt The student can describe how sound travels through at least 1 medium.

E	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Identify which type of wave form best describes sound as it travels.  Then explain why sound cannot travel through space.

Scoring Guide

4 pts The student identifies the type of wave sound is and clearly describes how it travels. (Includes a diagram)

3 pts The student clearly describes how sound travels.

2 pts The student somewhat describes how sound travels.

1 pt The student identifies that sound requires a medium.

P	8^th Grade Integrated Science	Standard: 04
Objective: 01. Investigate the movement of energy through various materials.
ILO:

Light Rays

Time Required: 20 to 25 minutes

Materials Needed:

Flat mirror

Protractor sheet

Flashlight

Opaque card with a small slit

Ruler

Scoring Guide:

5 pts possible Prediction Give 5 points for any reasonable prediction

10 pts possible Data Table Give 10 points for accurate (±5¡) completion of the Data Table

3 pts possible Analysis Give 3 points for a comparison of the angles that coincides with

the data collected

3 pts possible Give 3 points for explanation of why the data does or does not

support the law of reflection

3 pts possible Give 3 points for an appropriate example of reflection in everyday

life

24 Total Points Possible

Name: ________________________________________ Date____________________

Class/Period____________________________________ Total Score_______________

Light Rays

Problem: What is the path of a beam of light?

Prediction: If light is shined at an angle onto a mirror, how will the outgoing angle of light compare to the incoming angle? (5 points)

______________________________________________________________________________

______________________________________________________________________________

Materials:

Flat mirror

Protractor sheet

Flashlight

Opaque card with a small slit

Ruler

Procedure:

1. On the protractor sheet, place the mirror along the baseline with the reflective side facing the curve.

2. Attach the card to the flashlight so that only a line is projected (see sample card for slit size).

3. From outside the circle aim the beam at point A on the mirror. Use the ruler to trace the line from the flashlight to point A and from point A back out of the circle. Use a protractor to measure the angle from the "normal" to the incoming light ray. Record this information in the Data Table. Now measure the angle from the normal to the outgoing light ray and record the data.

4. Place the flashlight in two more positions, measure, and record the new angles in the Data Table.

sample card

	Position 1	Position 2	Position 3
Incoming Angle
Outgoing Angle

Data Table (10 points)

Analysis

1. How do the angles of the incoming rays compare to the angles of the outgoing rays? (3 pts)

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

The law of reflection states that the angle of incidence (the incoming angle) is equal to the angle of reflection (the outgoing angle).

2. Does your data verify the law of reflection?  Why or why not? (3 pts)

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

3. Give an example of when reflection is important in your everyday life. (3 pts)

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________