What type of charges do protons, neutrons, electrons have?
Protons-positive
neutrons- no charge
electrons- negative
100
What is the difference between open and closed circuits?
Open circuit means device is off, closed circuit means device is on.
100
A material that does not let electricity flow through easily.
What is an insulator?
200
The smallest particle of a stubstance.
What is an atom?
200
This is where a magnet is strongest.
Where is at the poles?
200
T/F: Static Electricity is not stationary.
False. It is stationary; it doesn't move
200
An electric circuit in which the devices are connected with a continuous loop.
What is a series circuit?
200
A constant flow of electrons through an object.
What is a conductor?
300
The buildup of electric charges on an object?
What is Static Electricity?
300
What types of objects are attracted to magnets?
What is steel and iron?
300
How do charges attract and repel?
positive charge attracts to negative charge
positive charge will repel another positive charge.
300
An electric circuit in which each device has its own loop.
What is a Parallel Circuit?
300
What type of objects are considered insulators? Conductors?
Rubber, plastic, wood, cloth
Most metals (copper, steel)
400
A temporary magnet created by the flow of electricity around an iron bar.
What is an electromagnet?
400
How do magnets attract and repel?
Like poles attract (pull towards each other)
Unlike poles repel (push away)
400
Why does static electricity happen?
charges are uneven so positive and negative charges will attract.
400
What would happen if one light goes out in a series circuit? Why?
All the lights would go out because there is not a path for the electrons to flow. It would be like an open circuit.
400
Why do is your car the safest place to be in a storm?
Why do most cords have Rubber?
Because rubber is an insulator and will prevent you from getting shocked.
500
A particle that is around the nucleus with a negative charge?
What is an electron?
500
Why does a compass point north or south?
Because Earth's north and south poles are magnetic and are attracted to the compass.
500
Explain how lightning occurs.
Clouds rub together in the sky and form a build up. There is a positive negative charge in the sky which is attracted to a postive charged object on the ground.
500
Are houses wired with parallel or series circuits? Why?
Parallel circuits. Devices have their own path. If one device turn on, you don't want everything to turn on at once.
500
What is happening with electrons in insulators and conductors?
*Hint think resistance
Insulators- electrons do not let go easily and have a high resistance (push back)
Conductors- electrons are let go easily and have a low resistance (can flow through easily)