Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← ScienceWhich mechanism allows a microwave oven to heat food containing water molecules?
A)Dielectric heating due to polar molecule rotation✓
B)Convection currents induced by thermal gradients
C)Resistive heating from ionic conduction
D)Infrared absorption via vibrational excitation
💡 Explanation
When exposed to microwaves, water molecules (polar) rotate rapidly as they attempt to align with the oscillating electromagnetic field, creating heat through dielectric heating due to intermolecular friction. Therefore, dielectric heating results, rather than convection, resistance or IR effects which require different molecular properties or radiation types.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Science →- Which risk increases when designing an industrial catalytic reactor for high throughput?
- Which flow transition is implied while increasing power on a ship's propeller?
- Which conduction effect results when electrons traverse nanoscale gaps?
- Which outcome reduces interferometer precision when path lengths exceed coherence?
- Which effect on light results near extreme curvature?
- Which outcome arises when an automotive catalytic converter experiences sulfur poisoning during operation?
