Review Questions

1. The general name given every substance in the physical universe is which of the following: a.Mass b.Matter c.Compound d.Nucleus

2. The smallest part of an element that retains all of its characteristics is which of the following: a.Atom b.Proton c.Compound d.Neutron

3. The particles that orbit around the center of an atom are called which of the following: a.Electrons b.Molecules c.Nucleus d.Protons

4. An atom that loses or gains one electron is called which of the following: a.Balanced b.An element c.A molecule d.An ion

5. Technician A says the battery provides electricity by releasing free electrons.

Technician B says the battery stores energy in a chemical form. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B

6. Static electricity is being discussed.

Technician A says that static electricity is electricity in motion. Technician B says an electrostatic charge can build up on the surface of your body. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B

7. What people discovered electricity? a.The Italians b.The Germans c.The Greeks d.The Irish 8. Technician A says batteries produce direct current from a chemical reaction.

Technician B says that an electrolyte is a chemical solution of water and hydrochloric acid that will conduct electricity. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B

9. Two technicians are discussing thermoelectricity. Technician A says applying heat to the connection point of two dissimilar metals can create electron flow (electricity). Technician B says a thermocouple is a small device made of two dissimilar metals that gives off a low voltage when heated. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B

10. Technician A says when sunlight contacts certain materials, electron flow is stimulated.

Technician B says solar energy is light energy from the moon that is gathered in a photovoltaic solar cell. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B

11. Two technicians are discussing how piezoelectricity works. Technician A says it is electricity produced when barium titanate is placed under pressure. Technician B says when no change in the potential of electrons between positive and negative terminal occurs, the barium titanate creates electricity. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B

12. James Watt’s term horsepower is being discussed. Technician A says one horsepower equals 33,000 foot-pounds of work per hour. Technician B says one horsepower would be produced when a horse walked 165 feet in one minute pulling

a 500-pound weight or 165 ft. × 500 lb. = 33,000 ft-lb. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B 13. Technician A says Andre Marie Ampere established the importance of the relationship between electricity and magnetism. Technician B says Alessandro Volta discovered that if two dissimilar metals were brought in contact with a water solution, a current would be produced. Who is right? a.A only b.B only c.Both A and B d.Neither A nor B