Electricity and Magnetism Study Guide

Atoms have​ (a)   particles called electrons and protons. Electrons have a ​ (b)   ​ charge and protons have a ​ (c)   charge. Electrons can ​ (d)   from one object to another. The charge of an object is determined by the number of protons and electrons. If an object ​ (e)   negative electrons, it will have a negative charge.

• charged
• negative
• positive
• transfer
• gains
• neutral
• exchange
• decreases

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The object that ​ (a)   electrons will then have more positive protons and will be positively charged. Objects with the same charge ​ (b)   each other. A charge that builds up in one place is ​ ​ (c)   electricity. You can cause this buildup by ​ (d)   a plastic ruler or comb with a piece of cloth.

• lose
• repel
• static
• rubbing
• gain
• attract
• current

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The positively charged particles in an atom are electrons.

• True

• False

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NGSS.MS-PS1-1

Atoms become charged by gaining and losing neutrons.

• True

• False

If an atom has a greater number of electrons than protons, the entire atom has a positive charge.

• True

• False

A conductor is a material that allows electrons to flow through it easily.

• True

• False

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Metals are poor conductors of electricity.

• True

• False

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NGSS.MS-PS2-3

Plastics, rubber, wood and glass are good conductors.

• True

• False

The presence of an electric charge is detected with a Geiger Counter.

• True

• False

When an object loses electrons, it gains a negative charge.

• True

• False

Tags

NGSS.HS-PS1-2

NGSS.HS-PS2-4