Electric Circuits & Energy Transformations

Electric Circuits

BrainPop:Electric Circuits

Introduction

https://www.youtube.com/watch?v=RdjcGu5OTfs

Brian Pop video

https://www.brainpop.com/science/energy/electriccircuits/

Multiple Choice

What are electrons?

• Negatively charged subatomic particles

• Positively charged subatomic particles

• Neutrally-charged subatomic particles

• Negatively charged atoms

Multiple Choice

Which word best describes electricity as it occurs in nature?

answer

• orderly

• Stationary

• Sudden

• Powerless

Multiple Choice

Why is static electricity not useful as a power source?

• Because electrons aren't transferred in bursts of static electricity.

• Because all energy is released at once in static electricity.

• Because static electricity is not a real form of electricity.

• Because static electricity only occurs in lightning.

Multiple Choice

What is a current?

• A steady flow of electricity.

• A wave in the sea

• A wire along which electricity flows.

• A power source that supplies electricity.

Multiple Choice

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

• It provides a steady source of static electricity.

• It is always closed

• It is always opened.

• It provides a steady flow of electrons.

Multiple Choice

How does rubber differ from most metals?

• Rubber is a good conductor, most metals are good insulators.

• Rubber conducts electrons; most metals conduct protons.

• Rubber is a good insulator; most metals are good conductors.

• Rubber is a good power source; most metals are good conductors.

Multiple Choice

What might happen if wires weren't insulated?

• We'd be in danger of harm from electric shocks.

• We would not be in any harm from electric shocks.

Multiple Choice

What device opens and closes an electric circuit?

• A load

• A Switch

• A current

Multiple Choice

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

• The electrons will still continue to flow.

• The electrons stop flowing, and the current continues

• The electrons stop flowing, and the current stops

Review video

https://www.youtube.com/watch?v=XSukRnxGy5c