Imagine a profile of soil going to a depth of approximately 10 ft. On a sunny day, the soil at a depth of 5ft will be ________ the soil at the surface because ________.
A) warmer; soil is a good conductor of heat
B) cooler; land is opaque preventing heating at depths
C) warmer; geothermal processes heat the deeper soils
D) cooler; plate movement mixes the soils and dissipates the heat

Question

Quizplus · Accepted Answer

As we go deeper into the soil, the amount of sunlight that reaches the soil decreases. Hence, the soil at a depth of 5ft will be cooler than the soil at the surface. Additionally, the land is opaque and does not allow much sunlight to pass through, which adds to the cooling effect.

Imagine a Profile of Soil Going to a Depth of Approximately