Circuits
What flows through circuits?
Electricity as electrons
What is a conductor?
A type of material that conducts electricity
What particles are associated with electricity?
the electron
What energy transformation does a blow dryer go through?
electrical->thermal->mechanical
How does a switch work?
What types of materials are commonly conductors?
Metals
What happens when you are shocked with the Van der Graff generator?
The negative electrons are attracted to you since you are more positive and transfer all at once causing the shock
What energy transformations does a solar fan go through
solar->electric->mechanical->sound
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
How do electromagnets work?
electromagnets have a current run through its iron core which creates a magnetic field which attracts magnetic metals. When the current stops, the magnetic properties stop working
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 are one big loop, parallel circuits are several separate loops
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 the formula for density?
Density = Mass/Volume