Michigan Test for Teacher Certification (MTTC) Secondary Integrated Science Practice test

What type of soil is characterized by a reddish-brown color and is formed in humid, temperate climates?

1. Pedalfers

2. Pedocals

3. Laterites

4. Aquifers

The correct answer is: Pedalfers

The type of soil characterized by a reddish-brown color and formed in humid, temperate climates is known as pedalfers. This soil type typically contains high amounts of iron and aluminum oxides, which contribute to its distinctive reddish hue. Pedalfers are commonly found in regions that experience significant rainfall, leading to key processes such as leaching, where nutrients are washed out of the soil. This contrasts with other soil types like pedocals, which are more prevalent in arid regions and tend to be alkaline, or laterites, which develop in tropical climates and are typically rich in iron and aluminum but are not specifically associated with temperate climates. Aquifers refer to underground layers of water-bearing rock and are unrelated to soil types.