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Standard 6, 7, 8 Test WAVES

 

 1. 

Examine the following sine pattern diagram.
mc001-1.jpg
Two-Part Question
Part One: The number of waves that occur every second is called the _______?
Part Two: For the wave shown in this diagram, what is the frequency?      .
a.
Part One: 2 waves/sec
Part Two:  frequency
b.
Part One: wavelength
Part Two: 1 wave/sec
c.
Part One: frequency
Part Two: 2 waves/sec
 

 2. 

To play high pitch notes on a guitar, a musician must decrease the length of the strings by pressing down on the strings with his or her fingers as they are being plucked or strummed.
mc002-1.jpg
Now imagine that a guitar string is cut into four pieces of different lengths as shown below.  Each piece is stretched between two supports to the same tightness.
If each piece was plucked in the middle with the exact same amount of force, which of the pieces would have the highest number of wave oscillations during one second?
a.
mc002-2.jpg
b.
mc002-3.jpg
c.
mc002-4.jpg
 

 3. 

If you press down on a piano key, let's say middle C, it generates a sound wave. Now, imagine that you press it down much harder so that it still plays the same tone but more loudly.
mc003-1.jpg
How would pressing the key down harder change the sound wave produced?
a.
The sound wave's frequency would increase.
b.
The sound wave's energy would decrease.
c.
The sound wave's amplitude would be larger.
 

 4. 

Carefully examine the image below.
mc004-1.jpg
Select the correct value for the wavelength of this wave., rounded to the nearest tenth of a centimeter.
a.
wavelength is 1inch
b.
wavelength is 2.3 cm
c.
wavelength is 1.3 cm
 

 5. 

SEP: Use mathematics and computational thinking (compute frequency).
mc005-1.jpg
If the speed of a wave is 260 m/s, and the wavelength is 20m, what is its frequency?
a.
frequency is 240m
b.
frequency is 13 Hz
c.
frequency is 13 m/s
 

 6. 

SEP: Use mathematics and computational thinking (compute wave speed).
mc006-1.jpg
If the frequency of a wave is 12Hz, and the wavelength is 7m, what is its speed?
a.
wave speed is 1.714 m/s
b.
waves speed is 84 Hz
c.
wave speed is 84 m/s
 

 7. 

SEP: Use mathematics and computational thinking (compute wavelength)
mc007-1.jpg
The speed of a wave is 33 m/s, and the frequency of this 17 Hz.  What is the wavelength? (round to the nearest hundredth)
a.
wavelength is 1.94 Hz
b.
wavelength is 1.94 m.
c.
wavelength is 561 m.
 

 8. 

You are in your car waiting for the light to turn green at a traffic light. You hear loud music coming from the car in the next lane. The music is loud enough that you can see your rearview mirror shaking.
mc008-1.jpg
What would happen to your rearview mirror if the amplitude of the sound waves from the other car was increased?
a.
Your mirror would shake at varying rates, faster and then slower. Then it would stop.
b.
Your mirror would shake more as more energy is transferred to your surroundings
c.
Your mirror would shake less as the sound wave energy dissipates.
 

 9. 

Stnd 07: Mechanical and Electromagnetic Waves
Examine the diagram below.
mc009-1.jpg
Identify the wave type shown above, and describe two key characteristics of this wave.
a.
This is an infrared wave. They are mechanical waves and require a medium.
b.
This is an electromagnetic air pressure wave. These waves do not require a medium.
c.
This is a radio wave. These waves are electromagnetic and do not require a medium.
d.
This is a sound wave. They are mechanical waves and require a medium to propagate.
 

 10. 

Stnd 07: Mechanical and Electromagnetic Waves
You are using a telescope to look up into the night sky, and you observe a blinking light from a satellite in orbit around the Earth.
mc010-1.jpg
mc010-2.jpg
What logical conclusion can you make about the properties of light from this observation?
a.
Light can travel through a vacuum. It can also travel through any medium.
b.
Light cannot travel through vacuums, but it can travel through solids, liquids, and gases
c.
Light travels at 186, 000 miles per second. It can travel through some mediums.
d.
Light can travel through a vacuum. It can also travel through a gas.
 

 11. 

Stnd 07: Mechanical and Electromagnetic Waves
A ray of light shines through a transparent window. Next it shines through a transparent glass cup containing water and a straw in it. You notice that the straw in the water appears to be misshaped. The light shining through the glass next impacts a mirror on the far side of the room.
Diagram 01
Diagram 02
Diagram 03
Diagram 04
mc011-1.jpg
mc011-2.jpg
mc011-3.jpg
mc011-4.jpg
Two-Part Question
Part One: Place the diagrams in the correct sequence to match the provided narrative above.
Part Two: Identify the type of wave: Mechanical or Electromagnetic?
a.
Part One: Diagram 02, Diagram 04, Diagram 03
Part Two: Visible light is a mechanical wave
b.
Part One: Third Diagram, 1st Diagram, Second Diagram
Part Two: Visible light is a form of solar radiation
c.
Part One: Diagram 01, Diagram 02, Diagram 03
Part Two: Visible light is an electromagnetic wave
d.
Part One: Diagram 03, Diagram 04, Diagram 02
Part Two: Visible light is an electromagnetic wave
 

 12. 

Stnd 07: Mechanical and Electromagnetic Waves
Examine the wave diagrams shown below.
mc012-1.jpg
mc012-2.jpg
Two-Part Question
Part One: Contrast transverse waves and longitudinal waves
Part Two: Are these waves mechanical or electromagnetic
a.
Part One: Transverse-particles are absorbed, longitudinal-particles are diffused.
Part Two: These types of wave are electromagnetic, not mechanical.
b.
Part One: Transverse-particles move perpendicular, longitudinal-particles move parallel
Part Two: These types of wave are mechanical, not electromagnetic.
c.
Part One: Transverse-particles are reflected, longitudinal-particles are refracted
Part Two: These types of wave are electromagnetic, not mechanical.
d.
Part One: Transverse-particles move parallel, longitudinal-particles move perpendicular
Part Two: These types of wave are mechanical, not electromagnetic.
 

 13. 

Stnd 07: Mechanical and Electromagnetic Waves
Examine the wave diagrams shown below
Electromagnetic Wave
Mechanical Wave
mc013-1.jpg

mc013-2.jpg
Which of the following answers correctly explains how light waves and radio waves are different from all mechanical waves?
a.
Radio and light waves can propagate without a medium in a vacuum.
b.
Light waves and radio waves slow down in a vacuum. Mechanical waves speed up.
c.
Radio waves and light waves transmit energy but mechanical waves transmit matter
d.
Light and radio waves are always transverse waves, never longitudinal.
 

 14. 

Stnd 08: Waves in Communication Systems
If you are injured or sick, you may have to go to a hospital to receive special medical treatment involving waves.
mc014-1.jpg
mc014-2.jpg
mc014-3.jpg
Which two kinds of electromagnetic waves do doctors often use to look inside of patients without surgery?
a.
Light waves and sound waves can enable a doctor to look inside our bodies.
b.
Ultraviolet and Infrared waves can propagate through our bodies to create pictures. 
c.
Sound waves (ultra-sound) and radio waves can propagate through our bodies.
d.
X-ray and gamma waves can propagate through our bodies to create visual images.
 

 15. 

Stnd 08: Waves in Communication Systems
Two boys playing in their neighborhood are communicating with each other using two-way radios (also known as walkie-talkies). They are one mile away from each other, and they cannot see each other.
mc015-1.jpg
mc015-2.jpg
mc015-3.jpg
Which kinds of waves are the boys using for this communication?
a.
They are using light waves (mechanical) and microwaves (electromagnetic).
b.
They are using sound waves (electromagnetic) and X-ray waves (mechanical).
c.
They are using sound waves (electromagnetic) and radio waves (mechanical).
d.
They are using and radio waves (electromagnetic), and sound waves (mechanical).
 

 16. 

Stnd 08: Waves in Communication Systems
An air traffic controller monitoring radar signals determines that an aircraft is flying at the wrong altitude. She communicates with the airplane’s pilot via radio to alert them about this.
mc016-1.jpg
mc016-2.jpg
Which two kinds of waves was the air traffic controller using, and what kind of waves are they?
a.
Microwaves and Radio waves. Both of these are electromagnetic waves.
b.
Radar waves and Radio. Radar is mechanical. Radio waves are electromagnetic.
c.
Microwaves and Gamma Rays. Microwaves and gamma waves are mechanical.
d.
Microwaves and Visible Light waves. Both of these are electromagnetic waves.
 

 17. 

Stnd 08: Waves in Communication Systems
Remote control devices for television and computer mice are common items that are routinely used by people all around the globe.
TV Remote Control
Computer Mouse
mc017-1.jpg
mc017-2.jpg
Which kinds of waves do these devises utilize, and what communication process best describe their use?
a.
Infrared waves. Machine to Machine then Human to Human.
b.
Infrared waves. Human to Machine then Machine to Machine.
c.
Ultraviolet waves. Machine to Machine.then Machine to Human
d.
Sound waves. Human to Machine then Machine to Machine.
 

 18. 

Stnd 08: Waves in Communication Systems
Fiber optic cables have greatly improved communication systems by increasing the bandwidth for data/images to be transmitted.
Fiber Optic Cables
mc018-1.jpg
mc018-2.jpg
Which kinds of waves are used with fiber optic cables, and how fast can waves propagate through these cables?
a.
They use visible light waves that move at the speed of light.
b.
They use a combination of radio waves and sound waves at the speed of sound.
c.
They use ultraviolet waves that move at the speed of light.
d.
Fiber optic cables use infrared waves at the speed of light.
 

Multiple Response
Identify one or more choices that best complete the statement or answer the question.
 

 19. 

Examine the sine and cosine wave patterns in the following graph.
mr019-1.jpg
(Multi-Select Question) Select three choices below that accurately describe this graph.
 a.
Both waves have the same frequency.
 b.
Both waves are electromagnet waves.
 c.
Both waves have the same amplitude.
 d.
Don’t Select
 e.
Both waves have the same wavelength.
 

 20. 

Examine the sine pattern diagram shown below.
mr020-1.jpg
(Multi-Select Question)
Select three choices that correctly match the letters shown in the diagram above?
 a.
Don’t Select
 d.
Don’t Select
 b.
Part D- Trough
 e.
Letter A- Wavelength
 c.
Part B- Amplitude
 f.
Part B-Frequency
 



 
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