Electricity Review

Electricity is:

• a form of energy resulting from the existence of charged particles

• a type of chemical reaction

• a form of kinetic energy

• a type of magnetic field

Answer explanation

Electricity is correctly defined as a form of energy resulting from charged particles, such as electrons. The other options do not accurately describe electricity.

Tags

NGSS.MS-PS2-3

What is the difference between static and current electricity?

• Static electricity is the accumulation of electric charge on a surface, while current electricity is the flow of electric charge through a conductor.

• Static electricity is the flow of electric charge through a conductor, while current electricity is the accumulation of electric charge on a surface.

• Static electricity and current electricity are the same, with no differences.

• Static electricity is the flow of electric charge in a vacuum, while current electricity is the flow of electric charge through a conductor.

Answer explanation

The correct choice explains that static electricity is the accumulation of charge on a surface, while current electricity refers to the flow of charge through a conductor, highlighting their fundamental differences.

How is an electric circuit important to current electricity?

• An electric circuit is not important to current electricity.

• An electric circuit provides a path for current to flow.

• An electric circuit stores current electricity.

• An electric circuit converts current electricity to other forms.

Answer explanation

An electric circuit is crucial for current electricity as it provides a continuous path for electric current to flow. Without a circuit, the flow of electricity would be interrupted, making it impossible for devices to operate.

Electric devices harness the energy of current electricity by:

• converting it into mechanical energy

• storing it as potential energy

• using it to produce light and heat

• transforming it into chemical energy

Answer explanation

Electric devices primarily use current electricity to produce light and heat, as seen in bulbs and heaters. This process directly converts electrical energy into usable forms of energy, making it the correct choice.

Can electric devices be powered by the energy of static electricity like they can by current electricity? Defend your answer.

• Yes, static electricity can power devices like current electricity.

• No, static electricity cannot power devices like current electricity.

• Only in specific conditions can static electricity power devices.

• Static electricity can power devices, but it's not practical.

Answer explanation

No, static electricity cannot power devices like current electricity because it does not provide a continuous flow of charge. Current electricity is needed for consistent power delivery, while static electricity is transient and cannot sustain device operation.

Tags

NGSS.MS-PS2-3

What is electricity?

• A form of energy resulting from the existence of charged particles

• A type of chemical reaction

• A form of sound energy

• A type of physical matter

Answer explanation

Electricity is a form of energy that arises from charged particles, such as electrons. This definition distinguishes it from chemical reactions, sound energy, and physical matter, making it the correct choice.

Tags

NGSS.MS-PS3-5

The difference between static and current electricity is:

• Static electricity is the flow of electric charge, while current electricity is the accumulation of electric charge.

• Static electricity is the accumulation of electric charge, while current electricity is the flow of electric charge.

• Static electricity and current electricity are both the flow of electric charge.

• Static electricity and current electricity are both the accumulation of electric charge.

Answer explanation

The correct choice states that static electricity is the accumulation of electric charge, while current electricity is the flow of electric charge. This accurately describes the fundamental difference between the two types of electricity.

How is an electric circuit important to current electricity?

• An electric circuit is not important to current electricity.

• An electric circuit provides a path for current to flow.

• An electric circuit stores current electricity.

• An electric circuit converts current electricity into other forms.

Answer explanation

An electric circuit is crucial for current electricity as it provides a continuous path for electric current to flow. Without a circuit, the flow of electricity would be interrupted, making it impossible for devices to operate.

Electric devices harness the energy of current electricity by:

• using batteries to store energy

• converting electrical energy into other forms of energy

• generating electricity through solar panels

• storing electricity in capacitors

Answer explanation

Electric devices convert electrical energy into other forms of energy, such as light, heat, or motion, which is essential for their operation. This makes 'converting electrical energy into other forms of energy' the correct choice.

Tags

NGSS.MS-PS3-5

Can electric devices be powered by the energy of static electricity like they can by current electricity? Defend your answer.

• Yes, they can be powered by static electricity in the same way.

• No, static electricity cannot power devices like current electricity.

• Only some devices can be powered by static electricity.

Answer explanation

No, static electricity cannot power devices like current electricity because static electricity is a temporary charge that does not provide a continuous flow of current, which is necessary for most electric devices to function.