PHYSICS · Single correct · AP · Physics 2: Algebra-based · Thermodynamics · Thermodynamics
Problem
An aluminium block and a wooden block, both kept in the same room for several hours, are touched by hand. The aluminium feels colder than the wood. Which of the following explains this observation?
(a) Aluminium has a higher density than wood, so it absorbs more heat from your hand and feels colder.
(b) Wood is a poorer absorber of radiation than aluminium, so it stays warmer and feels warmer to the touch.
(c) Aluminium has a larger thermal conductivity, so heat leaves your hand faster through it.
(d) Aluminium has a lower specific heat capacity than wood, therefore its surface stays colder for the same room temperature.