PS6 Electricity and Magnetism 5th

What is the difference between an insulator and a conductor with the flow of electrons?

• insulators are materials that allow electrons to pass through easily and conductors are materials that don't allow electrons to pass though
• conductors are materials that allow electrons to pass through easily and insulators are materials that don't allow electrons to pass though

What is static electricity?

• electricity that stays in one place and waits for something to come along and provide an electrical flow for the current
• electricity that moves from one place to another and waits for something to come along and provide an electrical flow for the current

Copper and silver are very good ____.

• insulators
• conductors
• acids to clean carburetors
• types of soft plastic

What is the difference between direct and alternating currents?

• direct current flows in one direction, such as a batter, and alternating current changes direction, an example of which is a wall plug
• alternating current flows in one direction, such as a batter, and direct current changes direction, an example of which is a wall plug

An electromagnet is different from an iron magnet because ____.

• It is attached to a handle that turns.
• It has hamsters on the inside.
• It is turned by the force of the magnet.
• It is moved by air currents underneath.

A circuit is _____.

• a car battery
• an insulating material
• a carnival
• the pathway for the flow of electricity

An ampere measures _____.

• the distance between breaks in a bridge expansion
• the elapsed time from wave to wave
• the volume of chemicals in a battery
• the strength of an electric current

What are resistors?

• batteries that run radios
• materials that hold electrons
• electrons that explode
• magnets that are weak

What is a device that's melts and breaks the electrical circuit when it gets too hot, preventing a fire?

• circuit
• breaker
• fuse
• insulator

What is a device that flips a switch and breaks the electrical current?

• circuit
• breaker
• fuse
•  conductor