Final answer:
A hazard is a property that makes an object or situation dangerous. In the context of electricity, thermal and shock hazards are discussed. Thermal hazards involve excessive electrical overheating, leading to fires, while shock hazards occur when electric current passes through a person, varying in severity from painful to lethal.
Step-by-step explanation:
A hazard is a property that makes an object or situation dangerous. In the context of the question, hazards refer to the potential dangers associated with electricity, specifically thermal and shock hazards. A thermal hazard occurs when there is electrical overheating, leading to undesired thermal effects like starting a fire. On the other hand, a shock hazard occurs when electric current passes through a person, which can range from painful to lethal.