Final answer:
Clastic sedimentary rocks include conglomerate, sandstone, and shale. They differ in clast size and environment of formation.
Step-by-step explanation:
The main kinds of clastic sedimentary rock are conglomerate, sandstone, and shale. They differ from one another in terms of their clast size and environment of formation. Conglomerate is composed of rounded clasts that are larger than 2 mm in diameter and indicates a high energy environment, such as a river. Sandstone is composed of sand-sized clasts, which range from 0.0625 to 2 mm in diameter, and can form in a variety of environments, including deserts, beaches, and rivers. Shale is composed of clay-sized clasts that are less than 0.0625 mm in diameter and typically forms in calm water environments like lakes and oceans.