Why does water on tarp evaporate slower than water on wood?

Question

I have a deck that’s part covered by a tarp and part covered by wood. No heating sources are nearby. After rainfall, the water standing on wood evaporates significantly faster than the water standing on the tarp.

What is the mechanism that’s causing this?

In: 6

Answer 1

The wood is porous and will absorbe some of it but it allso gives the water a bigger surface to evaporate from.