Electrical force quiz

Static electricity occurs when charges build up on an object instead of flowing. The static charge on the object can build up in one of four ways. Name and give an example of each of the four ways that static electricity can be created.

Answer explanation

Conduction: contact

Induction: near by but no contact

Polarization: push charge to otherside of item

Friction: Build up of charge due to rubbing of materials.

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The magnetic field of Earth acts very similarly to a bar magnet. The magnetic field is created

by molten iron within Earth’s core. Humans and animals rely on the magnetic field for

navigation. Describe how the magnetic field is used for navigation, and explain how it

protects life on Earth.

You are creating a circuit with a series of materials, which material would be best to use in terms to slowing the flow of the circuit?

• Conductors have free electrons that allow easy flow of electric current.

• Insulators have tightly bound electrons that resist the flow of electric current.

• Conductors are made of insulating materials that block electric current.

• Insulators convert electric current into heat more efficiently than insulators.

A proton is placed next to a negatively charged object. In which direction would the proton move?

• Towards the negatively charged object

• Away from the negatively charged object

• It will not move

• It will move randomly

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If you move two objects with opposite charges towards one another, what happens to the potential energy between them?

• The potential energy increases.

• The potential energy decreases.

• The potential energy remains the same.

• The potential energy becomes zero.

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Mia is building a diorama showing the parts of an atom. She wants to better understand the effects of electric forces. An atom is made up of particles called protons, neutrons, and electrons. Choose from the word bank to complete the sentences. Mia learns that electric forces are (1) ​ (a)   between particles like protons and electrons. The electric forces are (2) ​ ​ (b)   between particles like two protons. These forces can be experienced over a distance due to (3) (c)   . Word bank: explosive, attractive, neutral, repellent, electric fields, electric discharge, electric charge, potential energy.

• Neutral
• Potential energy
• Explosive
• Attractive
• Repellent
• Electrical Field
• Electric discharge
• Electrical charge

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After Sandra combs her hair, she notices that her hair moves toward the comb. Choose the answer that properly describes the charges that build up on her comb vs on her hair.

• The comb has taken on a positive charge, while her hair takes on a negative charge.

• The comb takes on a negative charge, while her hair takes on a negative charge.

• The comb takes on a positive charge, while her hair takes on a positive charge.

• The comb takes on a negative charge, while her hair takes on a positive charge.

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Based on the image, what does A represent?

• Voltage

• Current

• Resistance

• Force

• Electrons

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Based on the image, what does B represent?

• Electrons

• Resistance

• Current

• Force

• Voltage

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Based on the image, what does C represent?

• Force

• Voltage

• Electrons

• Current

• Resistance

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