Electromagnetic Waves
Sound Waves
Digitalization
Vocabulary
Miscellaneous
100
What type of wave is an electromagnetic wave?
Draw a picture of this type of wave and label (wavelength, peak, trough, and amplitude)
Transverse Wave
100
What type of wave is a sound wave?
Draw a picture of this type of wave and label (wavelength, rarefaction, and compression)
Longitudinal wave
100
The phone outputs a _______ wave as a ________ signal to send to the wireless speaker.
The phone outputs a radio wave as a digital signal to send to the wireless speaker.
100
What term matches the following definition:
The distance between two successive crests or troughs of a wave
Wavelength
100
What type of wave exits the wireless speaker and enters your ear?
Sound Waves
200
Electromagnetic waves can travel in a _________.
Electromagnetic waves can travel in a vacuum.
200
Sound waves require a ________ to travel in.
Sound waves require a medium to travel in.
200
What type of signal is the more efficient and reliable way to transmit information?
Digital signals are more efficient and reliable.
200
What term matches the following definition:
A measurement of the amount of energy transferred by a wave
amplitude
200
What happens when a sound wave moves from a less dense medium into a more dense medium?
The sound wave will move faster.
300
List all wavelengths of visible light from lowest energy to highest energy.
1. Red
2. Orange
3. Yellow
4. Green
5. Blue
6. Indigo
7. Violet
300
When the frequency of a wave increases:
pitch ______ and wavelength __________
When the frequency of a wave increases:
pitch increases and wavelength decreases
300
Digital signals are able to transmit over _________ distances, but are not as detailed as ____________ signals.
Digital signals are able to transmit over long distances, but are not as detailed as analog signals.
300
What term matches the following definition:
When a wave travels through a medium or into a new medium
Transmission
300
Why is thunder heard after lightning is seen?
The speed of light is faster than the speed of sound.
400
Write out all 7 electromagnetic waves from longest wavelength to shortest wavelength.
Label which wave has the highest energy and which one has the lowest frequency.
1. Radio (lowest frequency)
2. Microwave
3. Infrared
4. Visible
5. Ultraviolet
6. X-rays
7. Gamma Rays (highest energy)
400
When the amplitude of a wave increases:
volume ______ and wavelength __________
and the amount of energy in the wave __________
When the amplitude of a wave increases:
volume increases and wavelength stays the same and energy increases
400
Digital information can be transmitted between technology devices as __________________.
Digital information can be transmitted between technology devices as electromagnetic wave pulses.
400
What term matches the following definition:
The number of waves produced in a given amount of time
Frequency
400
What happens when a light wave moves from a less dense medium into a more dense medium?
The light wave will move slower, and also be refracted.
500
Draw a picture (with labels) that describes why apples appear red.
500
In what material would sound travel the fastest:
1. Air
2. Outer Space
3. Steel
4. Water
Steel (a solid medium)
500
The sound waves produced by a source are _______ signals, but can be encoded by a technology device into a __________ signal.
The sound waves produced by a source are analog signals, but can be encoded by a technology device into a digital signal.
500
What term matches the following definition:
a change in the direction and velocity which occurs when a electromagnetic wave travels from one material into another
Refraction
500
All waves transmit _______.
All waves transmit energy.