Lesson 1: Electricity

Multiple Choice

What type of subatomic particle has a negative charge?

• proton

• neutron

• electron

• quark

Multiple Choice

Which best briefly summarizes the law of electric charges?

• charges always repel

• charges always attract

• charges that are opposite in nature attract; charges that are the same in nature repel

• charges that are opposite in nature repel; charges that are the same in nature attract

Multiple Choice

What is the buildup of electrical charges in one place called?

• neutrons

• static electricity

• insulator

• conductor

Multiple Choice

What unit is electric current measured in?

• ohms

• amps

• volts

• watts

Multiple Choice

Electricity travels at the speed of

• sound

• darkness

• light

• none of these

Multiple Choice

Electric current is the flow of

• protons

• neutrons

• electrons

• all of these

Multiple Choice

Which of the following would be the best example of a conductor?

• a tire

• a plastic spoon

• a log

• aluminum foil

Multiple Choice

All wires used to carry electricity should be covered with

• a colored material

• a conducting material

• an insulating material

• none of these

Multiple Choice

Which form of electric discharge appears in nature?

• sunlight

• thunder

• lightning

• norther lights