The pathway to drain excess electric charge into the Earth.
What is grounding?
100
These are two of the parts of an electric motor.
What are brushes, magnets, armature (coiled wire), commutator, power supply
100
This is formed when a wire in an electric circuit is wrapped around an iron core.
What is electromagnet?
100
huge wheels that rotate when pushed by water, wind, or steam
What is a turbine?
100
static charge movimg from one object to another
What is electric discharge?
200
An atom that gains or loses an electron.
What is an ion?
200
electric circuit
What is a closed path in which an electric current can flow
200
what happens in a permanet magnet
a- the magnetic domains arent lined up
b- the magnetic domains are lined up
c- it contains an iron core
d- it contains a current-carrying wire
What is b) the magnetic domains are lined up
200
A circuit with more than one closed path for electric current to flow
What is a parallel circuit?
200
Two simple machines used in a generator
What are an gear and a lever?
300
A material in which energy doesn't easily flow
What is and insulator?
300
The measure of how difficult it is for electrons to flow in an object
What is a electric resistance?
300
An MRI does this
Uses magnetic fields to create images of the inside of the human body
300
The energy stored in an object as a result of its position above the Earth's surface.
What is gravitational potential energy?
300
Law of Conservation of Energy
What is that energy can not be created or destroyed?
400
a material in which energy easily flows
What is a conductor?
400
The current in a simple electric circuit flows:
a) from the negative pole to the positive
b) from the positive pole to the negative
c) in either direction because a battery uses AC current
What is a) from the negative pole to the positive
400
Simple motors, a generator, and an electromagnet have these in common
What are magnetism and electricity
400
Measured in amperes
What is current?
400
A magnet's magnetic field is strongest here.
What is at the poles?
500
The ____ is a resistor in a lightbulb made of tungsten
What is the filament?
500
Rubbing a balloon on your hair transfers ____ from your hair to the balloon. The balloon is now _______charged.
What are electrons and negatively?
500
magnetic poles
What are the two ends of a magnet for a bar magnet or the two sides of a magnet for a magnet disk/ring