( mechanical weathering , temperature, disintegrate, chemical weathering, rocks, decompose)

1.____ are composed of various minerals that expand and contract in response to 2.___ changes. when heated during the day rocks expand and when temperature drops at night they contract. The mineral compulsion of rocks is affected by their mineral compulsion of rocks is affected by their continuous expansion and contraction. 3.___ is the process by which Rock crumble and fall apart. when mineral crystals in rocks reacts with water and air 4.____ occurs. It is the process of forming new substance forme process of forming new substance from minerals found in rocks. during this process the chemical potion of rocks changes causing mini wrong to decompose and even this song rocks 5.___ as a result of the action of certain elements and compounds in the environment such as oxygen carbon the sa as a result of the action of certain elements and compounds in the environment such as oxygen carbon dioxide and water