Which invention is associated with navigation using lodestone to determine direction?

Which invention is associated with navigation using lodestone to determine direction?

• A. Paddlewheel
• B. Chinese Compass
• C. Porcelain
• D. Tea cultivation

Answer: (B)

Magnetism and lodestone allow determining direction by giving a stable reference that points toward magnetic north. Lodestone is a naturally magnetic mineral, and when formed into a needle or small float, it aligns with Earth's magnetic field. This made it possible to tell direction even when stars were obscured or unreliable. In ancient China, this insight was turned into a practical navigation tool—the Chinese compass—so sailors could chart courses across seas with greater confidence. This invention profoundly changed travel and trade by enabling more reliable long-distance navigation. The other options don’t involve using magnetism to find direction: a paddlewheel is about propulsion, porcelain is a ceramic material, and tea cultivation is an agricultural practice.

Magnetism and lodestone allow determining direction by giving a stable reference that points toward magnetic north. Lodestone is a naturally magnetic mineral, and when formed into a needle or small float, it aligns with Earth's magnetic field. This made it possible to tell direction even when stars were obscured or unreliable. In ancient China, this insight was turned into a practical navigation tool—the Chinese compass—so sailors could chart courses across seas with greater confidence. This invention profoundly changed travel and trade by enabling more reliable long-distance navigation. The other options don’t involve using magnetism to find direction: a paddlewheel is about propulsion, porcelain is a ceramic material, and tea cultivation is an agricultural practice.