Circuits
What is the definition of electricity?
flow of electrons
What is a conductor?
A type of material that conducts (allows electrons to flow through) electricity
What particles are associated with electricity?
the electron
What energy transformation does a flashlight go through?
chemical->electrical->light (maybe thermal)
What would "HIGH VOLTAGE" on electrical high-tension wires mean?
The pressure or force of the electrons is extremely high. This is dangerous. Stay away.
How does a switch work?
What types of materials are commonly conductors?
Metals
What is in the nucleus of the atom? Name their charges as well.
Protons and Neutrons are in the nucleus. Protons are positively charged and Neutrons do not have any charge.
What energy transformations does a fan go through?
electrical- mechanical
What other things conduct electricity that could be dangerous? 2 specifics
People and water
What is the difference between an open and closed circuit?
An open circuit does not conduct electricity (path is disrupted)
A closed circuit allows for electricity to flow
What is an insulator?
A type of material that restricts the flow of electricity
Where is the electron in the atom?
Orbiting around the nucleus
What energy transformations do you go through when you run?
chemical (food)->mechanical->thermal
What things outside should you avoid during a thunderstorm?
What type of circuit would be best for electricity in a home and why? (Series or parallel)
Parallel circuits so that if one light burns out it does not impact the rest of the circuit and keeps electricity flowing continuously
Wires are metal on the inside and insulators on the outside to prevent electric shock
What do opposite charges do?
attract
When using a battery, what are the two contact points?
Foot and the screw thread
What does the conservation of mass mean?
That mass before and after a reaction remain the same. No atoms are created nor destroyed
What is the difference between series and parallel circuits?
Series circuits have only one path. Parallel circuits have more than one path.
What types of materials are insulators?
plastic, wood, glass, nonmetals
What do like charges do?
They repel each other
Is energy created?
Energy is not destroyed or created, but transformed into other forms of energy
What is kinetic and potential energy?
Kinetic is energy in motion.
Potential is stored energy.
In a series circuit with a 9 volt battery and three bulbs, what would the total voltage drop be?
9 volts
Why would the paper clip continue to allow electrons to pass through to complete the circuit?
It is a metal.
If neutrons have no charge and protons are positive, how do they stay together in the nucleus?
Strong Force
If electrical energy is transformed to thermal energy, what does this tell you about the load?
has heat
Why is Tungsten used in a filament in a lightbulb?
It has a high melting point of 6,100 Degrees F !