Lightbulbs contain which mineral?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Enhance your understanding of Natural Resources C18. Test your knowledge with structured questions, detailed hints, and comprehensive explanations. Gear up for your 8th grade exam now!

Multiple Choice

Lightbulbs contain which mineral?

Explanation:
Lightbulbs use tungsten for the filament because it can glow hot enough to emit visible light without melting. Tungsten has an exceptionally high melting point and very low vapor pressure, so a thin tungsten wire can be heated to the right temperature and last a long time. Copper would soften or melt under those temperatures, silver is too expensive and would evaporate at incandescent heat, and nickel, while heat-resistant, doesn’t perform as well as tungsten for durable, long‑lasting filaments. That combination of properties makes tungsten the best fit for the filament in traditional bulbs.

Lightbulbs use tungsten for the filament because it can glow hot enough to emit visible light without melting. Tungsten has an exceptionally high melting point and very low vapor pressure, so a thin tungsten wire can be heated to the right temperature and last a long time. Copper would soften or melt under those temperatures, silver is too expensive and would evaporate at incandescent heat, and nickel, while heat-resistant, doesn’t perform as well as tungsten for durable, long‑lasting filaments. That combination of properties makes tungsten the best fit for the filament in traditional bulbs.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy