🔍 Key Concepts

• Gasoline vapor density compared to air • How vapors behave in confined spaces on a boat • Why proper ventilation of fuel vapors is critical for safety

💭 Think About

• Think about where gasoline vapors will naturally collect in a closed engine compartment or bilge area. • If you dropped a small amount of gasoline on deck and it began to evaporate, would the vapor tend to rise up and disperse, or sink and collect in low spots? • Consider which locations on a vessel could trap vapors and create the greatest explosion risk.

✅ Before You Answer

• Recall whether gasoline vapors are heavier or lighter than air. • Visualize the bilge area and ask yourself if it is a safe or dangerous place for fuel vapors to collect. • Check which answer choices suggest intentionally venting vapors into occupied or enclosed spaces and think about overall safety.