Brainpop Electricity

What happens if you disconnect a circuit from its positive terminal?

• The electrons stop flowing, and the current stops.
• The current reverses direction.
• Nothing happens
• The electrons shoot out from the negative terminal.

What might happen if wires weren't insulated?

• The circuit would be broken.
• Current electricity would become static electricity.
• We'd be in danger of harm from electric shocks.
• The power source would no longer provide a flow of electrons.

What device opens and closes an electric circuit?

• a current
• a load
• a power source
• a switch

What are electrons?

• Negatively charged subatomic particles
• Positively charged subatomic particles
• neutrally charged subatomic particles 
• charged atoms

What is the function of a power source in a circuit?

• It provides a means through which the circuit can be broken.
• It provides a path along which the electricity can flow.
• It provides a steady flow of electrons.
• It provides a steady source of static electricity.

What is a current?

• A power source that supplies electricity.
• A wire along which electricity flows.
• A short burst of electricity
• A steady flow of electricity

Why is static electricity not useful as a power source?

• Because static electricity occurs only in lightning
• Because all energy is released at once in static electricity
• Because electrons aren't transferred in bursts of static electricity
• Because static electricity isn't a real form of electricity

Which word best describes electricity as it occurs in nature?

• orderly
• powerless
• stationary
• sudden

How does rubber differ from most metals?

• Rubber conducts electrons; most metals conduct protons
• Rubber is a good conductor; most metals are good insulators
• Rubber is a good power source; most metals are good conductors
• Rubber is a good insulator; most metals are good conductors

Tags

NGSS.HS-PS2-6

Which of the following items is an example of a load?

• a wall outlet
• a battery
• a toaster
• a circuit

Tags

NGSS.HS-PS3-3