Review Static Electricity

An engineer is building an electronic device. She wants to use a material that will give her the most control over the amount of electric charge that flows through a circuit. Which material should she use?

• Conductor

• Insulator

• Semiconductor

• Tube

When two objects have different electric charges they __________.

• become negatively charged

• pull towards each other

• become positively charged

• push away from each other

When Bethany walks across a carpet, her socks pick up many negative electric charges. Later in the day, these negative charges are no longer present on her socks. What most likely happened to the negative charges? 

• the charge disappears

• transfers to another object

• switch from negative to positive charge

• charges break a part into smaller charges

Which of the following best describes electric charge?

• a force that causes objects to heat up

• high-voltage material that can cause damage to objects

• a fundamental property that causes electric and magnetic interactions

• a particle that moves freely between objects

_________________________ is the build up of electric cahrge on an object. 

• static electricity

• electric charge

• electric insulator

• electric conductor

When a force acts at a distance, the area in which an object experiences that force is called ______________________. 

• a distance

• a charge

• a field

• a force

An _________________ surrounds every charged object. 

• force field

• negative force field

• positive force field

• neutral force field

Objects can have three charges; what are they?

• positive, negative, unbalanced

• positive, negative, electron

• positive, negative, proton

• positive, negative, no charge

Wood is considered a (an) ___________

• semi-conductor

• conductor

• insulator

• semi-insulator

Peter’s teacher tells him that he should not place his electric stereo near the edge of a pool because the water in the pool is a conductor. What does she mean when she says that the water is a conductor?

• water is a type of electrical energy

• water damages electrical circuits

• electric charges cannot flow without water

• electric charges can move freely through the water in the pool