(a) Iron is a poor conductor of heat, so the heat concentrates at the end, making it glow. Copper conducts heat away quickly, so it doesn't glow. (b) Copper conducts heat along the rod quickly, making the whole rod hot. Iron conducts heat slowly, so the other end remains cooler.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• Joseph Soko – 101 pts

• Distance of A Straight Line
• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• COMMUNICATION SYSTEMS