NCCER Core Module 1 Exam Questions and Answers 100% Correct Graded A+ 2026/27
Accident - According to the US Occupational Safety and Health Administration (OSHA),
an unplanned event that results in personal injury and/or property damage.
Combustible - Capable of easily igniting and rapidly burning; used to describe a fuel with
a flash point at, or above, 100 F (38 C).
Competent Person - A person who is capable of identifying existing and predictable
hazards in the surroundings or working conditions that are unsanitary, hazardous, or dangerous to
employees, and who has authorization to take prompt corrective measures to eliminate them.
Confined Space - A work area large enough for a person to work, but arranged in such a
way that an employee must physically enter the space to perform work. A confined space has a
limited or restricted means of entry and exit. It is not designed for continuous work. Tanks,
vessels, silos, pits, vaults, and hoppers are examples of confined spaces.
Flammable - Capable of easily igniting and rapidly burning; used to describe a fuel with a
flash point below 100 F (38 C).
Ground Fault - Incidental grounding of a conducting electrical wire.
Hazard Communication (HAZCOM) Standard - The OSHA standard that requires
contractors to educate employees about hazardous chemicals on the job site and how to work
with them safely.
,Hydraulic - Powered by fluid under pressure.
Incident - Per the US OSHA, an unplanned event that does not result in personal injury
but may result in property damage or is worthy of recording.
Management System - The organization of a company's management, including reporting
procedures, supervisory responsibility, and administration.
Occupational Safety and Health Administration (OSHA) - An agency of the US
Department of Labor. Also refers to the Occupational Safety and Health Act of 1970, a law that
applies to more than 111 million workers and 7 million job sites in the US.
Personal Protective Equipment (PPE) - Equipment or clothing designed to prevent or
reduce injuries.
Pneumatic - Powered by air pressure, such as a pneumatic tool.
Respirator - A device that provides clean, filtered air for breathing, no matter what is in
the surrounding air.
Safety Culture - The culture created when the whole company sees the value of a safe
work environment.
, Safety Data Sheet (SDS) - A document that must accompany any hazardous substance.
The SDS identifies the substance and gives the exposure limits, the physical and chemical
characteristics, the kind of hazard it presents, precautions for safe handling and use, and specific
control measures.
Trench - A narrow excavation made below the surface of the ground that is generally
deeper that it is wide, with a maximum width of 15 feet (4.6 m).
The person primarily responsible for your safety is ___. - Yourself
The color commonly used for informational signs is ___. - Blue
The SDS for any chemical used at a job site must be available ___. - At the job site
Cross-bracing - Braces (metal or wood) placed diagonally from the bottom of one rail to
the top of another rail that add support to a structure.
Excavation - Any man-made cut, cavity, trench, or depression in an earth surface, formed
by removing earth. It can be made for anything from basements to highways.
Guarded - Enclosed, fenced, covered, or otherwise protected by barriers, rails, covers, or
platforms to prevent dangerous contact.
Accident - According to the US Occupational Safety and Health Administration (OSHA),
an unplanned event that results in personal injury and/or property damage.
Combustible - Capable of easily igniting and rapidly burning; used to describe a fuel with
a flash point at, or above, 100 F (38 C).
Competent Person - A person who is capable of identifying existing and predictable
hazards in the surroundings or working conditions that are unsanitary, hazardous, or dangerous to
employees, and who has authorization to take prompt corrective measures to eliminate them.
Confined Space - A work area large enough for a person to work, but arranged in such a
way that an employee must physically enter the space to perform work. A confined space has a
limited or restricted means of entry and exit. It is not designed for continuous work. Tanks,
vessels, silos, pits, vaults, and hoppers are examples of confined spaces.
Flammable - Capable of easily igniting and rapidly burning; used to describe a fuel with a
flash point below 100 F (38 C).
Ground Fault - Incidental grounding of a conducting electrical wire.
Hazard Communication (HAZCOM) Standard - The OSHA standard that requires
contractors to educate employees about hazardous chemicals on the job site and how to work
with them safely.
,Hydraulic - Powered by fluid under pressure.
Incident - Per the US OSHA, an unplanned event that does not result in personal injury
but may result in property damage or is worthy of recording.
Management System - The organization of a company's management, including reporting
procedures, supervisory responsibility, and administration.
Occupational Safety and Health Administration (OSHA) - An agency of the US
Department of Labor. Also refers to the Occupational Safety and Health Act of 1970, a law that
applies to more than 111 million workers and 7 million job sites in the US.
Personal Protective Equipment (PPE) - Equipment or clothing designed to prevent or
reduce injuries.
Pneumatic - Powered by air pressure, such as a pneumatic tool.
Respirator - A device that provides clean, filtered air for breathing, no matter what is in
the surrounding air.
Safety Culture - The culture created when the whole company sees the value of a safe
work environment.
, Safety Data Sheet (SDS) - A document that must accompany any hazardous substance.
The SDS identifies the substance and gives the exposure limits, the physical and chemical
characteristics, the kind of hazard it presents, precautions for safe handling and use, and specific
control measures.
Trench - A narrow excavation made below the surface of the ground that is generally
deeper that it is wide, with a maximum width of 15 feet (4.6 m).
The person primarily responsible for your safety is ___. - Yourself
The color commonly used for informational signs is ___. - Blue
The SDS for any chemical used at a job site must be available ___. - At the job site
Cross-bracing - Braces (metal or wood) placed diagonally from the bottom of one rail to
the top of another rail that add support to a structure.
Excavation - Any man-made cut, cavity, trench, or depression in an earth surface, formed
by removing earth. It can be made for anything from basements to highways.
Guarded - Enclosed, fenced, covered, or otherwise protected by barriers, rails, covers, or
platforms to prevent dangerous contact.
