Hazard

A hazard is something that can be dangerous to people, goods, and the environment. Hazards are often marked with warning signs to help people know that a dangerous thing exists and to do the right thing to stay safe. Each hazard has ways to make it less dangerous or remove it.

For example, a motorist should read road signs and react to hazards on the road to stay safe like slowing down for sharp turns.

 By Physical Nature 

 Biological hazards are caused by living microorganisms (e.g., bacteria, viruses, and parasites) that can make other living things sick.
 Chemical hazards are caused by harmful chemicals (e.g., acids).
 Radioactive hazards are caused by materials that give off ionizing radiation (e.g., plutonium).
 Thermal hazards are caused by extreme heat (e.g., fires) or extreme cold (e.g., freezing weather).
 Kinetic hazards are caused by moving objects or forces (e.g., vehicles and loud vibrations).https://www.britannica.com//science/kinetic-energy

References

Category:Safety