🔍 Key Concepts

• Low velocity water fog characteristics (droplet size, pattern, and how gently it is applied) • Typical uses of water fog in firefighting: cooling, smothering (displacing oxygen), and protection from radiant heat • Difference between fine water fog and a coarse water spray pattern

💭 Think About

• Which options describe what fine, gentle water fog does when it turns to steam near a fire? Think about heat absorption and oxygen displacement. • Which choice sounds more like a description of a nozzle pattern (how water is delivered) rather than a specific tactical use of low velocity fog? • If you were fighting a flammable‑liquid fire in an engine room, which three functions of low velocity fog would be most valuable, and which one doesn’t quite fit that role?

✅ Before You Answer

• Verify which functions of water fog are specifically listed in your firefighting manual as benefits of low velocity fog (cooling, smothering, radiant heat shielding). • Check whether coarse water spray is usually associated with the same nozzle setting and droplet size as low velocity fog, or with a different type of stream. • Make sure you distinguish between a firefighting tactic/purpose and a description of spray pattern when comparing the answer choices.