Circuits
In some cases (such as an assembly line in a factory), it is important to have certain devices all connected through one path a circuit, so that if one device is turned of, all devices on the circuit turn of.
Which type of circuit is being described?
Series
What kind of relationship do amplitude and energy of a wave have?
Directly proportional
Analog
Which of the following is described has how much information can be transmitted in a given time?
Noise
Bandwidth
Compatibility
Security
Bandwidth
Which type of code uses combinations of 0s and 1s that translate into letters?
Binary Code
In my kitchen, I have 3 light bulbs that are connected to the same light switch. Recently, one of the light bulbs burned out and needs to be replaced. However, the other two light bulbs stayed lit. Which type of circuit do my kitchen lights use?
Parallel
If I decrease the wavelength of a wave it will increase the frequency of the wave.
What kind of relationship do wavelength and frequency have?
Inversely proportional
Which type of signal (analog or digital) records actions as a set of numbers or code?
Digital
There are many advantages to using digital signals rather than analog. One advantage is that digital signals offer more security to protect information that is being shared. Why do digital signals offer more security?
Digital signals are protected by coding
Each number in binary code is a bit of information. Bits are then arranged into groups of eight. These groups of eight are called _____________
Bytes
What are the three main components needed to make a circuit?
A power source
Conductive wires
A device powered on electricity
Which type of wave travels perpendicular to the motion of the medium that is traveling through?
Transverse wave
Which vocabulary term refers to how often a signal is recorded or converted to digital code?
Sampling rate
When random signal from the environment interfere with signals sent from technology it is referred to as noise. Which type of signal can more easily avoid the problem of noise?
Digital
Name two forms of communication that humans used before the invention of computers. (other than directly talking to each other)
Telephones
Telegraphs
Writing
Ohm's law gives us the equation:
Voltage= Current x Resistance
If a power source has a voltage of 240 V and their is a resistance of 0.2 ohm's, what is the current?
1200 amperes
Longitudinal
Visual engineers always want to use the best quality images. Why can high quality images with many pixels be difficult to use at times?
images with many pixels take up a lot of storage
What is the difference between hardware and software?
Hardware is the physical medium where information is stored
Software is programs that can run on hardware
When recording a song, it is recorded from a(n) ________________ signal.
To be able to save it onto your phone it is converted to a(n) ________________ signal
Analog
Digital
Bonus: For 50 extra points, name an example of a resistor.
How difficult it is for a current to run through an object
example: light bulb
Electromagnetic
Which type of telephone (analog or digital) works by converting sound waves into electronic wave pulses, which then travel through a wire to another phone, and then the other phone converts the wave pulses back to sound waves?
Analog
Which type of signal typically has a greater bandwidth?
Digital
Many people are using wireless devices at any given time. These wireless devices use electromagnetic waves to send signals. To ensure the signals do not end up in the wrong places, a certain property is changed about the waves. Which property is different?
Wavelength or frequency