U2L1E1: Electric and Magnetic Forces

What is the physical property of all matter that leads to electric and magnetic interactions?

• Mass

• Volume

• Electric charge

• Density

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What causes static electricity?

• Moving electric charges

• Friction between objects

• Light energy

• Heat energy

What happens when you touch a doorknob and get shocked?

• Electric charges remain stationary

• Electric charges quickly move between objects causing a spark

• Electric charges are destroyed

• Electric charges are created

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What is the net charge of an object with positive and negative charges?

• Positive charge

• Negative charge

• No charge

• Total charge

What happens to the net charges of a balloon and hair after electric charges move between them?

• Balloon becomes neutral, hair becomes negative

• Balloon becomes negative, hair becomes positive

• Balloon becomes positive, hair becomes negative

• Balloon becomes neutral, hair becomes positive

What happens to the charges in neutral objects when outside forces are used?

• Charges remain stationary

• Charges spread out evenly

• Charges can move and separate within the object

• Charges are destroyed

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What is the effect of thunderstorms on the charges in clouds?

• Equal distribution of charges throughout the cloud

• Negative charges on top of the cloud, positive charges on the bottom

• Positive charges on top of the cloud, negative charges on the bottom

• No effect on the charges in clouds

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Are electric and magnetic forces found on Earth and in space?

• Not present on Earth or in space

• Present on Earth and in space

• Only present in space

• Only present on Earth

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What are electric and magnetic forces involved in?

• Communication, medicine, and transportation

• Sports and entertainment

• Farming and agriculture

• Cooking and cleaning

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What causes water droplets to move around a charged knitting needle and change direction?

• Frictional forces

• Magnetic forces

• Gravitational forces

• Electric forces

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