Parts of a Circuit
What is a circuit?
A complete closed loop or path that has electrical charges flowing through it.
What is the charge of a proton?
What is electricity?
The movement of electrons.
Which way does a compass point?
Compasses usually point North.
What is temperature a measure of?
The average kinetic speed of all the particles in an object.
What is a resistor?
Any material that resists, or slows down the flow of electricity.
What is the charge of an electron?
An electron has a negative charge (-1)
What is Direct Current?
A type of electric current where all of the charges flow in a single direction, like a river.
What is a field?
A set of labels for every point in a space.
How can you change the state of an object?
By adding or removing energy (heating or cooling it off), by slowing or speeding up the particles.
Give an example of a resistor.
What is the charge of a Neutron?
A Neutron has no charge (0) or the charge is neutral
What is Alternating Current?
A type of electric current where the charges move back and forth continuously.
Are fields equally strong in all areas? (Give an example)
No - for example, the strength of a magnetic field is dependent upon the distance from the field. The wind can blow at different speeds in a location, and different places in the same room can be hotter or colder. All are examples of a field being weaker in an area.
How does sweating help cool your body off?
The heat (fast moving particles) collide with the water in the sweat, knocking them off your skin, or evaporating them. The water had to absorb energy, and slow down your particles, making you feel cooler.
What is an anode and cathode?
The negative and positive ends of a battery.
What does the law of charges state?
Opposite charges attract, and similar charges repel.
(+ and +) or (- and -) push apart
(+ and -) or (- and +) pull together.
What is necessary for electricity to flow?
A complete circuit, an uninterrupted path, a circle of continuous charges.
DAILY DOUBLE: BET YOUR POINTS TO DOUBLE YOUR WAGER, OR LOSE THEM ALL. WRITE THE POINTS YOU'RE BETTING ABOVE YOUR ANSWER.
Why do magnets, of opposite charges, pull together when they get close to each other?
Their magnetic fields interact and the law of charges pulls opposite charges together.
What is density?
Mass/Volume or the measure of how closely packed the particles are in an area.
DAILY DOUBLE: BET YOUR POINTS TO DOUBLE YOUR WAGER, OR LOSE THEM ALL. WRITE THE POINTS YOU'RE BETTING ABOVE YOUR ANSWER.
How fast does electricity move in a circuit?
It moves at the speed of light, or approximately 2.99x10^9m/s or 671,000,000mph
The atom has a charge of -1
How are magnetism and electricity related?
They are examples of the same phenomena. Magnetic fields push on moving particles while electrical fields push on all charged particles, but one creates the other.
Why do compass needles point north?
The needle is following the magnetic fields of earth, which are caused by the spinning metal core, acts like the coils of an electromagnet.
What is the rule regarding whether or not an object floats or sinks in a fluid it is put into?
Objects which are denser then the fluid will sink, while objects which are less dense float.