Multiple Choice
Read each item carefully then choose the letter of the correct answer.
1. It refers to the flow of electrons. *
1 point
A. circuit
B. charge
C. electricity
D. friction
2. When electricity flows through wires into our homes, we have _____. *
1 point
A. static electricity
B. current electricity
C. electric charges
D. flowing electricity
3. Why does the bulb light up? *
1 point
A. The bulb becomes hot.
B. Electricity moves from the bulb to the dry cell.
C. Electricity moves through a complete circuit.
D. The electricity is collected in the wire that heats up the bulb.
4. Which of the following best describes what current electricity is? *
1 point
A. It is the energy produced by protons.
B. It is the energy produced by protons and neutrons.
C. It is the energy produced by moving electrons.
D. It is the energy that moves through wires.
5. In which of the following situations do you think current will flow? *
1 point
A. closed circuit
B. open circuit
C. broken circuit
D. short circuit
6. What will happen if part of the circuit is not properly connected? *
1 point
A. Electricity will flow.
B. Electrons will continue to flow.
C. Electricity will flow to the appliance.
D. No electricity will flow through the wire.
7. How do we describe a conductor of electricity? It is a material that _____. *
1 point
A. allows the free electrons to flow easily through it.
B. has extra free electrons on its surface.
C. has no free electrons that can move freely.
D. prevents the surplus electrons from moving out the wire.
8. When is a certain material considered an insulator? If it _____. *
1 point
A. allows the free electrons to flow easily through it.
B. doesn't allow the free electrons to flow easily through it.
C. protects the excess electrons from getting very hot.
D. gives rise to the production of more electrons.
9. Why isn't static electricity utilized to power our home appliances? *
1 point
A. It brings about several sparks and shocks to the device.
B. It is more expensive to use than current electricity.
C. It is more dangerous to use in our appliances.
D. It is not a continuous source of electric power.
10. What results when extra electrons collect and stay in an object for a period of time? *
1 point
A. static electricity
B. current electricity
C. free electricity
D. dangerous electricity