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15
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When the electrons are flowing in one direction,in order for there to be electricity, what are the protons doing?
Staying still
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seesaw
Swap points!
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gift
Win 25 points!
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fairy
Take points!
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15
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25
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banana
Go to last place!
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15
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How do you get the free electrons to move in one direction rather than randomly all over the place?
You use rubber or plastic and hope that it works
You tell the electrons to go left or right
You hook a copper wire to a light bulb and back to start
You put the conductor (wire) into a circuit with a power
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15
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What is a resistor used for in a circuit?
Something used to reduce the flow of electrons.
Something used to turn off the circuit
Something used to increase the flow of electrons
Something used to turn on the circuit
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15
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What do you call materials that donât have free electrons to pass from one atom to another?
Insulators
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boom
Lose 50 points!
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rocket
Go to first place!
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fairy
Take points!
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25
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lifesaver
Give 5 points!
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15
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True or False: A battery is actually a combination of 2 or more cells
True
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In an atom, electrons travel around the nucleus. What can happen to electrons travelling in the outermost shell of the atom (valence electrons)?
These electrons can change their charge
These electrons can float to other atoms
These electrons can float into the nucleus
These electrons can shield the atom from other atoms
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15
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Generators like those at power plants use giant____________ and coiled copper _________. This produces charge which alternates _____________.
Magnets, wires, direction
Batteries, pipes, cost
Towers, nets, current
Basketballs, necklaces, soundwaves
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15
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What must happen for there to be electrical energy? (Energy you can use for things like light bulbs.)
The breaking apart of atoms
The moving of charge
The total balance of charge
The bonding of molecules
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15
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What happened to the string on the kite of Ben Franklin's experiment?
The string was too wet, nothing happened
Franklin was struck by lightning and rushed to the doctor
The kite caught fire
The frayed ends of the string stood up
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banana
Go to last place!
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gold
Win 50 points!
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shark
Other team loses 10 points!
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banana
Go to last place!
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eraser
Reset score!
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gold
Win 50 points!
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fairy
Take points!
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15
20
25
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banana
Go to last place!
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An electric field develops when electrons move in one direction in a closed circuit. At what speed does this electric field move?
The speed of sound
Electrical fields always go the speed limit
The speed of light
It depends on the material of the conductor
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15
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Which mastermind won the War of the Currents in 1880âs and which type of system won (in other words, what do we use today)?
Nikola Tesla, DC (Direct current)
Thomas Edison, AC (alternating current)
Thomas Edison, DC (Direct current)
Nikola Tesla, AC (alternating current)
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What do you call materials that can pass electrons from one atom to another?
Conductors
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