Electricity

Lightning occurs when the ​ (a)   particles in the thundercloud builds up and jumps to the (b)   charged ground.

• positively
• negatively
• neutral
• opposite

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If you have a continuous flow of electrons, you have ​ (a)   electricity.

• current
• static

Match the vocabulary word to the correct definition.

• positively charged part of an atom

• electron

• a circuit that is incomplete

• open circuit

• a circuit with a continuous path

• circuit

• negatively charged part of an atom

• closed circuit

• path electricity flows

• proton

Determine if the following is a conductor or an insulator

Groups:

(a) Conductor

,

(b) Insulator

• plastic

• wood

• aluminum

• copper

• brass

• rubber

• cotton

• water

• steel

• glass

How does a light switch in your house work?

• It opens and closes the circuit

• It makes the light bulb brighter

• It provides the energy for the circuit.

Two balloons rubbed with wool and then released in the air, _______ each other.

• Attract

• Repel

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While combing her hair, Lisa noticed that her hair and the comb are attracting each other. This means that the hair and the comb have

• opposite charges

• like charges

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Jordan is walking across her living room in woolen socks, generating static electricity. When she reaches out to open the metal door, what is most likely to happen?

• The static charge will vanish.

• The door will repel her.

• She will feel a slight shock.

• She will generate more static electricity.

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John is trying to fix his table lamp. Choose the correct statement.

• The lamp will light up because it is an open circuit.

• The lamp will light up because it is a closed circuit.

• The lamp will NOT light up because it is an open circuit.

• The lamp will NOT light up because it is a closed circuit.

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Tyra and Mark were at a birthday party. They each rubbed a balloon on their hair, generating static electricity.

Which of the following is the best reason why the balloons push each other apart when they try to bring them together?

• The balloons have magnetic charges

• The balloons have no charges

• The balloons have opposite charges

• The balloons have the same charge

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