Why do woollen clothes keep us warm during cold weather?

Type: MCQ • Marks: 1

A. Wool generates its own thermal energy

B. Wool fibers trap air which prevents body heat loss

C. Wool absorbs cold from air

D. Wool reflects body radiation back as light

Explanation

Wool fibers have fine air pockets. Air is a poor conductor of heat, preventing body heat from escaping into the environment.

Want to attempt the full test series with a timer and instant score? Purchase the package to unlock the complete test. Purchase Now

Class 7th Curiosity

This page is indexed for search so students can find questions directly from Google.

Welcome to TutorWale!