From the same base temperature sand will warm quicker than clay given the same conditions.
swamp+sand=clay
Sand. The sand has space between all of the little grains, clay is stuck together with less space.
Sand, because there is more space between the particles.
mud+sand=clay
Clay is soft and sand is like sand water
Their both the same, really, just two different names for sand with clay in it, however one might have more clay in one (sandy clay) than the other (clayey sand), but only by miniscule amounts.
Conduction
Yes if the sand is on the clay it can roll even if the sand was not on the clay.The clay can still roll.
Sand is far and away more permeable than clay. Water poured into sand disappears in moments. Clay layers in the earth can effectively block the penetration of moisture. Big time.
No, clay porosity is typically lower than sand porosity. Clay particles are small and tightly packed, leading to lower porosity compared to sand particles, which are larger and have more open spaces between them.
Regular beach sand is silica - mineral sand is like fine grained quartz.
Sand has the highest permeability among clay, sand, and silt. Sand particles are larger with more space between them, allowing water and nutrients to flow more easily through the soil. Clay has the lowest permeability due to its fine particle size and compaction, which can restrict water movement.