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6.5: Review Questions

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    63512

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    Multiple Choice Questions

    1. The key factor in distinguishing between a “Struck” event and a “Caught” event is:
    (a) the type of machinery involved
    (b) whether crushing injuries occurred
    (c) whether the impact alone caused the injury
    (d) the depth of the excavation

    2. Which of the following is an example of a “caught-in or -between” hazard?
    (a) being hit by a falling tools
    (b) being crushed between a truck frame and lowering hydraulic bed
    (c) slipping on a wet floor
    (d) inhaling chemical fumes

    3. What is the primary role of a “competent person” under OSHA standards?
    (a) to operate heavy machinery safely
    (b) to supervise workers during breaks
    (c) to identify and eliminate hazards prompts
    (d) to inspect employee safety equipment daily

    4. A worker is pinned between a backhoe’s swinging superstructure and a wall. It is an example of:
    (a) buried-in hazard
    (b) pinned-between hazard
    (c) electrocution hazard
    (d) struck-by hazard

    5. Employers must provide which of the following to protect workers from caught-in or -between hazards?
    (a) guards on power tools
    (b) measures to prevent equipment tip-overs
    (c) protective systems in trenches
    (d) training in hazard recognition
    (e) all the above

    6. Which of the following is not considered a caught-in or -between hazard?
    (a) being pulled into a conveyor belt
    (b) being buried in an unprotected trench cave-in
    (c) being struck by a falling hammer
    (d) being pinned between two machines

    7. Which hazard is associated with being “buried in or by”?
    (a) strangulation by moving machinery
    (b) cave-ins and collapsing walls
    (c) electric shocks from overhead power lines
    (d) noise-induced hearing loss

    8. Which situation best illustrates a caught-in hazard rather than a struck-by hazard?
    (a) a worker hit by a falling hammer
    (b) a worker’s glove pulled into a rotating drill press
    (c) a worker struck by debris during demolition
    (d) a worker exposed to chemical vapors

    9. When working in a trench, what is the safest way to enter or exit?
    (a) climbing on the trench box
    (b) jumping in and out carefully
    (c) using a ladder or ramp within the protected area
    (d) using the excavator bucket as a lift

    10. A worker is crushed when heavy plates used as trench shoring fall over. Which safety measure would have prevented this?
    (a) Proper bracing between the plates
    (b) Wider excavation walls
    (c) Warning signs near the trench
    (d) Use of respirators

    11. Which example best shows compliance with lockout/tagout procedures?
    (a) Leaving equipment running while adjusting settings
    (b) Disconnecting and tagging machinery before maintenance
    (c) Allowing maintenance while power remains on
    (d) Using verbal warnings instead of physical locks

    12. To prevent being pinned between vehicles and structures, workers should:
    (a) Walk directly behind moving vehicles
    (b) Maintain a safe distance and clear communication with operators
    (c) Stand near the swing radius of cranes
    (d) Enter blind spots to speed up work

    13. Why must seat belts be used on heavy equipment like loaders or graders?
    (a) They prevent workers from overheating in the cab
    (b) They keep operators from being ejected and crushed if the machine tips
    (c) They reduce engine vibration
    (d) They are required only for road vehicles

    True/False Questions

    14. True/False: Trench cave-ins are one of the leading causes of “buried in or by” fatalities.
    15. True/False: OSHA requires that scaffolds be erected, moved, or dismantled only under the supervision of a competent person.
    16. True/False: Trench boxes prevent soil from collapsing into a trench.
    17. True/False: Cave-ins, machinery entanglements, and collapsing walls are all examples of caught-in or -between hazards.
    18. True/False: Employers are not required to train workers about caught-in or -between hazards as long as they provide protective equipment.
    19. True/False: Workers should never place themselves between moving equipment and an immovable object.
    20. True/False: Removing machine guards is acceptable if it speeds up construction tasks.
    21. True/False: A “competent person” must have both knowledge of hazards and authority to correct them.
    22. True/False: Workers should never enter an unprotected trench or excavation 5 feet or deeper without an adequate protective system in place.

    Answer Key: 1(c), 2(b), 3(c), 4(b), 5(e), 6(c), 7(b), 8(b), 9(c), 10(a), 11(b), 12(b), 13(b), 14(True), 15(True), 16(False), 17(True), 18(False), 19(True), 20(False), 21(True), 22(True).

    This page titled 6.5: Review Questions was last modified on Fri, 14 Aug 2026 17:00:15 GMT and is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Jenny Huang.