Electricity
What opposes current?
Resistance
Why is steel used in suspension bridges to suspend the deck?
Steel is strong in resisting tension
A transmitter is the sender of the information and its responsibilities include modulating the signal into an electromagnetic frequency, and then sending it out
Why should windows face south?
To face the lower winter sun and allow more thermal gain from radiation.
What is the only letter in the English alphabet that ISN'T used in an (American) state's name?
Q
What is the pump, or push, to make flow?
Voltage
Why wouldn't a porous material be good for a foundation?
A porous material would not be strong in compression
What is a transmission channel and what frequencies do we use to communicate?
A transmission channel defines what type of electromagnetic frequency we are using to communicate. We use radio waves, microwaves, and light waves.
Why are overhangs important in the fdesign a solar efficient home?
Overhangs allow the low winter sun yet they act as a solar blocker to the high summer sun
What do you call a cow/bison hybrid?
a beefalow
How much power is present in the following circuit?
A parallel circuit run on an AC supply, that has a voltage of 9 volts and a resistance of 18 ohms.
4.5 watts
What concept makes a roof tear off a house in a hurricane?
Bernoulli's principle because the fast moving air over the roof creates an area of low pressure
What uses pulses of light that is communicating a series of ones and zeros? Is this digital or analog?
Fiber optic technology that is digital
T/F. Photovoltaic cells are an example of a passive system,
False. It is active bc it has moving parts
No number before ________ contains the letter 'A'
1000
If there is a voltage source, and a conductor, but no resistor, what will happen to the circuit?
It will short out if there is no resistance to the current
Why do roofs in Texas has flat roofs, while roofs in Montana have very steep roofs?
To allow the live load of the snow to fall off
Are radio waves used in wireless technology, hard wired technology, or both?
Both, yet as technology improves it is used more for wireless technology
When hot fluid rises and cooler fluid sinks, it is an example of __________________.
Convection
The _______________ saved every public tweet from 2006 through 2017
U.S. government :(
I have an AC outlet, but a laptop that runs on a battery. What part of a circuit can allow me to change AC to DC?
A diode
What or who regulates HOW you build a building, to ensure it is safe and up to code?
Building inspector
What frequencies allow me to start my car with a remote starter?
Radio waves
What TWO methods or thermal transfer are used to heat a room when a fireplace is burning?
Convection and radiation
Theodore Roosevelt had a pet ___________
hyena