🔍 Key Concepts

• Difference between conductors and insulators for heat and electricity • Common uses of metals like steel, aluminum, and copper on ships • Typical properties and uses of glass (e.g., windows, containers)

💭 Think About

• Think about which of these materials is usually used to CARRY electricity or heat, and which is used to BLOCK it • On a vessel, which of these would you expect to find in electrical wiring or engine parts, and which would you find in windows or protective barriers? • Which materials feel cold quickly to the touch because they move heat away from your hand, and which ones don’t? (That’s an insulating behavior)

✅ Before You Answer

• Identify which choices are metals (usually good conductors, not insulators) • Recall that electrical wiring on board uses good conductors, not insulators • Think about which material is commonly used where you want to reduce heat or electrical flow, not increase it