The document discusses different types of weathering and erosion processes that break down and transport earth materials. It describes mechanical weathering which breaks rocks into smaller pieces without chemical change through processes like frost wedging and exfoliation. Chemical weathering alters the composition of rocks through dissolution, hydrolysis and oxidation reactions aided by water, oxygen and living organisms. The document also outlines various agents of erosion like water, wind, glaciers and gravity that transport eroded sediments from their source locations.

10. Mechanical weathering Rock and mineral fragments are reduced to small size by purely physical means, without change in composition.

14. SALT CRYSTALLIZATION WHEN WATER PRESENT IN THE PORES OF ROCK EVAPORATES MINUTE SALT CRYSTALLS ARE PRECIPITATED. THIS PROCESS IS CALLED SALT CRYSTALLIZAYION.

15. SHEETING A TYPE OF JOINTING PARALLEL TO THE ROCK SURFACE CAUSE BY PRESSURE RELEASE.

16. EXFOLIATION THE FLAKING OR STRIPPING OF A ROCK BODY IN CONCENTRIC LAYERS.

34. WATER EROSION

37. WIND EROSION

40. GLACIER EROSION