Vocabulary
Interpreting Waves
ART
Analog vs Digital
Electromagnetic Spectrum
100
Maximum height of a wave
Amplitude
100
Which wave has a larger amplitude? Explain in a sentence.
Wave B has higher amplitude because it is taller.
100
The only way an object is changed by light
When it is absorbed
100
which type of signal is binary code? (1s and 0s)
digital
100
Which wave from below has the highest frequency?
Gamma Rays
200
Distance from one peak to the next
Wavelength
200
How do the wavelengths of Wave A and Wave B compare?
They are the same.
200
This image shows what happening to the light hitting the mirror?
Reflect
200
Records are an example of which type of signal?
Analog
200
Put these 3 wavelengths in order of MOST to LEAST energy:
microwaves, x-rays, infrared
x-rays, infrared, microwaves
300
To take in
absorb
300
Which wave has more energy? Explain your answer in one sentence.
Wave 1 has more energy because it has a higher amplitude.
300
What is it called when a wave passes through an object? Does it change the object?
transmit, no change
300
The best way to maximize storage is to use which type of signal?
digital
300
What is the largest wavelength on the electromagnetic spectrum?
Radio
400
Use the word transmit in a sentence that shows you understand the meaning of the word.
The light transmitted through the red cube and onto the mirror.
400
According to the diagram, which color light has the highest frequency? Explain.
Violet has the highest frequency because it has the shortest wavelength.
400
In class, you saw that the laser could bounce off the mirror and onto other objects. What is this called and did it change the mirror?
reflect, no change
400
Continuous data
Analog Signal
400
When you turn on a flashlight, what kind of light is emitted?
visible
500
Define analog OR digital signal.
Analog-A signal conveyed by continuous data, but have limited storage space
Digital-A signal in which continuous data has been translated to a series of noncontinuous digits, like 1 and 0.
500
Recall our radish experiment in the SIM. Do you expect all colors to cause the radishes to grow the same amount? Explain.
Different colors have different effects on objects, like plants. I would not expect them all to grow the same height because some colors have different wavelengths that might be reflected instead of absorbed.
500
Why do many plants appear green? Which light should you NOT use for causing a plant to grow/photosynthesize and why?
They appear green because the green light is reflected. You should not use green light to grow plants because it can only go through photosynthesis with wavelengths that are absorbed.
500
What are at least 3 benefits of digital signals over analog signals?
-can store more information
-can travel across long distances
-not affected by interference
500
Which wavelength can cause damage to your DNA that results in skin cancer? What is one type of wave that has more energy than this wavelength?
Ultraviolet (UV) and x-rays or gamma rays have more energy