Electric Currents and Charges

Match the following subaatomic particles to their charges

• Negative

• Neutrons

• Positive

• Protons

• Neutral

• Electrons

Categorize insulators and conductors

Groups:

(a) Conductors

,

(b) Insulators

• Rubber

• mercury

• gold

• High Resistance

• Wood

• Low Resistance

• Copper

• Plastic

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Like charges​ (a)   and opposite charges​ (b)   .

• Repel
• attract

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Label the objects with their charge.

a

b

c

neutral

negative

Positive

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Electric currents are caused by movement of...

• Electrons

• Neutrons

• Protons

• Atoms

You know that the object connected to the wires is a conductor because: (a)  

• The light bulb is glowing bright.

• It's a complete circuit.

• It's a closed circuit.

• The object is shiny.

The object that would best complete this circuit is a (a)   .

• battery

• a piece of yarn

• an insulator

• a conductor

Tags

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Jill finds that all of the electric cords in her school are covered in plastic. Why is it important to cover the electric cords with plastic?

• Plastic is an insulator.
• Plastic is a conductor.
• Plastic is strong.
• Plastic will melt.

Most metals make good _______________________.

• conductors

• insulators

• circles

• electrons

Tags

NGSS.MS-PS2-3

The closer two charges are two each other, the _ the force between them.

• stronger

• weaker

• Trick question! The distance between them has no effect on the electric force.

Tags

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