Digital vs. Analog
Thus signal uses discrete values (like 0s and 1s) and is commonly used in computers and phones.
What is digital?
What is the frequency?
Mechanical waves need ______________ to travel.
What is a medium?
Electromagnetic waves travel at what speed.
What is speed of light?
This signal varies continuously and is often found in nature.
What is analog signal?
The measurement between two corresponding points on a wave.
What is wavelength?
This mechanical wave requires particles to travel parallel to the direction of the wave.
What is a longitudinal wave?
The is a type of electromagnetic wave that is used in communication
What are radio waves, infrared waves, microwaves?
Resist noise and can be corrected.
What is an advantage of digital signals?
Doubling the frequency of a wave leads to __________.
You have a slinky and the waves move up and down. What type of mechanical wave is it?
What is a transverse wave?
Higher frequency = higher energy
What is the relationship between frequency and energy?
An audio file stored at regular time intervals.
What is sampling rate or frequency?
This can cause more energy in a wave. (Hint: Measurement between resting position and crest)
What is larger amplitude?
This type of energy is being exerted during a wave.
What is kinetic and potential energy?
This common electromagnetic wave is commonly used everyday to encode digital data.
What is wi-fi ?
In this type of signal, distortion cannot be fixed.
What is analog signals?
Of the properties of waves, (frequency, or amplitude) this property shows a relationship that affects wavelength.
What is frequency?
Two waves of the same frequency but different amplitudes are produced, which has more energy?
What is the wave with the larger amplitude?
Different colors correspond to different frequencies/wavelengths; prism separates by wavelength because refractive index depends on wavelength.
What is visible light?