Electricity Unit

Electricity can flow through graphite. Graphite is therefore a(n)

Other examples include copper and steel.

• semiconductor
• insulator
• conductor
• dielectric

Electricity cannot flow through wood. Wood is therefore a(n)

Other examples include glass and rubber

• conductor
• semiconductor
• superconductor
• insulator

For electricity to flow, what do you need?

• only a battery

• only a battery and a light bulb

• only a battery, light bulb, and wire

• only a battery, light bulb, and wire in a closed circuit

Tags

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The flow of electrical energy is called a(n)

• electron

• circuit

• insulator

• current

How does a switch control the flow of electricity?

• A switch can make electrons neutral.

• A switch can make electrons positively charged.

• A switch can convert electricity into heat.

• A switch can open and close a circuit.

Tags

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What is static electricity?

• Static electricity is the energy produced by moving water.
• Static electricity is the flow of electric current through a conductor.
• Static electricity is the heat generated by friction between two surfaces.
• Static electricity is the buildup of electricity on the surface of objects.

Tags

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When a negatively-charged object and a positively-charged object come near each other, they ________.

• repel
• attract
• remain unchanged
• neutralize

Tags

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The smallest particle of an element that can exist is called a(n) ?

• atom
• molecule
• compound
• ion

Tags

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Which of these particles are negatively charged and can jump between atoms?

• Electrons

• Protons

• Neutrons

• Cations

Tags

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What happens to an object when its atoms lose electrons?

• The object becomes negatively charged.
• The object remains neutral.
• The object becomes positively charged.
• The object gains mass.

Tags

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