Chapter 4 Study Material

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Across
  1. 3. A fire a fire that involves ordinary materials like paper, cardboard, and wood.Class A fires can be extinguished with water.
  2. 5. the unit of measurement of electric current. Also abbreviated as amp.
  3. 7. C fire an electrical fire. Class C fires are extinguished with CO2 (carbon dioxide).
  4. 12. practical jokes and playful activity that are inappropriate on a construction site.
  5. 14. a material that allows electricity to flow.
  6. 15. practices the things a worker does and how he or she works—these practices have a lot to do with safety.
  7. 16. protective equipment any safety equipment you wear to protect yourself from safety hazards.
Down
  1. 1. refers both to the state and federal Occupational Safety and Health Administration and also to state administrations. OSHA also stands for the Occupational Safety and Health Act, which is administered by the Occupational Safety and Health Administration. OSHA generally refers to the laws that are intended to keep workers safe.
  2. 2. the electrical pressure that causes current to flow, measured in volts (sometimes abbreviated as V). Voltage is sometimes called electromotive force (EMF) because it is the force that causes electrons to move. Voltage also represents the difference of potential, or potential difference, in a circuit.
  3. 3. B fire a fire that involves flammable liquids. Class B fires are extinguished with either dry chemicals or CO2(carbon dioxide).
  4. 4. a conducting body that serves as the common return path for an electric circuit. A ground typically has zero potential. The earth may also be used as a ground.
  5. 6. to Know rule the OSHA rule that says that every worker has a right to know about any substances on the job that might be harmful to humans.
  6. 8. fault circuit interrupter a protective device that opens the electric circuit when an imbalance in the amount of current flow between the conductors is sensed.
  7. 9. triangle consists of heat, fuel, and oxygen (the three sides of the triangle); the three elements must be present for a fire to burn.
  8. 10. conditions the things in the work environment that affect your work.
  9. 11. user instructions found on most construction products. The product label contains valuable information.
  10. 13. Data Sheet gives complete information about the product and what to do in the event of exposure. An SDS is required to be available for any substance that might be harmful.