WorksheetsA Shocking Conversation Quiz
Total questions: 9
Worksheet time: 5mins
What are electrical wires in your house and car probably made of?
copper (a metal)
rubber
plastic
adamantium
How quickly do car headlights come on after the driver turns them on (and connects them to the battery).
about 6 hours
instantly
exactly 0.06 seconds
it depends on how long the wire between the battery and the lights is
How long does it take for a single electron to get from one end of a car battery into the light the battery is powering?
instantly
exactly 0.06 seconds
it depends on how long the wire is
about six hours
What is electric current?
The total number of electrons in all the wires and all the parts of the circuit
The number of charges passing a certain point in a certain amount of time
The push from the batteries on the electrons
Can we actually count electrons as they go by in a wire?
no
yes
If you charge a balloon by rubbing it against your hair and then carry it across the room, does that count as a current?
yes, but a small one
no
Negative charges moving to the LEFT produce the exact same results as...
Neutrons moving to the LEFT
Protons staying still
Electrons moving to the RIGHT
Positive charges moving to the RIGHT
Which model for "volts" works for you...? (Scroll down)
The hill model - big objects on a hill have more potential energy than little objects, but they have the same "potential" because they are at the same height. So if you had two charges with the same Volts (electrical potential) the one with more charge would have more energy and the one with less charge would have less energy.
The water pressure model - electrons are flowing like water, and a battery is like a water tower; a lot of volts means putting a lot of pressure on the current to flow.
The grocery store model - Volts are like the price PER pound of meat. If you buy a lot of meat, you pay a lot (lots of energy). If you buy a little meat you pay a little (little energy) - but the price per pound (volts) is always the same.
Math... 1 volt is 1 Joule of Electrical Work (the amount of energy it takes to raise a quarter-pound hamburger 1 m) per 1 Coulomb of electrical charge.
The conveyer belt / chutes & ladders model - the volts are the "ladders" (whatever brings the charges UP so that then they can fall down later and be the current.
The hill model
The water pressure model
The grocery store model
Math...
The conveyer belt / chutes & ladders model
Where do magnetic fields come from?
ONLY special rocks that have fallen from space (called magnetite)
ONLY Magnetite AND iron that you have heated up and then cooled down in a strong magnetic field
Spinning electrons
