LEDS
Is an LED a light or a sound source?
Light
How do you spell circuit?
C-i-r-c-u-i-t
What is a battery?
Where the power comes from
What is 10 x 10?
What is my name?
Mr. H
What color can an LED be?
Any color
What is the term for a complete, closed path for the flow of electrical current?
A circuit
Which side of a coin battery is positive?
Top
What is 100/25?
4
How many people live in the United States?
340 million people
What does LED stand for?
Light Emitting Diode
If a circuit is open, what happens?
Nothing. It needs a closed loop to make something happen
What are most batteries made of?
Lead
What is 10 + 13 x 2
36
What color is a giraffe's tongue?
Dark blue/Purple
Which leg of an LED is positive?
The longer leg
What do the wires do in the circuit we made today?
They allow current to flow in a loop to make the LED light up.
Batteries can come in three basic types. Name those types.
Coin, AA, AAA
What is 4^4
256
Chemical symbol of water?
H2O
LEDs only work in what type of circuit?
A closed loop circuit
True or false: Two resistances can be combined in series and parallel?
True
When was the first battery invented? (If you are within 50 years of the correct year, I'll give you half the points)
1799
What is the sine of 90 degrees?
1
In what year did World War I begin? (Exact year for points)
1914