Streams lengthen their valleys mainly by erosion headward lateral forward downwa

Question

Streams lengthen their valleys mainly by erosion headward lateral forward downward alluvial The following are examples of physical [mechanical] weathering processes except unloading Thermal expansion Hydration Hydrolysis Frost action Which of these is not a major factor influencing the rate and type of weathering? Temperature Rainfall Time Rock type Wind Refers to the downslope movement of material under the influence of gravity Denudation Landslide Erosion Mass wasting Slope failure Which of these of mass movement is most likely to pose a hazard to a mountain climber in a dry or arid climate ? Landslide Rock fall Mudflow Soli creep Slump refers to the slow, imperceptible downslope movement of dry soil material under gravity Soilfluction Soil creep Talus cone Slump Slide In Ephemeral streams, Stream channel contains water only part of the year Stream channel is very shallow Stream channel carries water all year-round Stream channel has high amount of load during dry period Stream channel disappears underground In a meandering stream channel the deepest part with the highest flow velocity occur along the

Explanation / Answer

61.(Answer is Downward)Downcutting or vertical erosion is mainly lengthen the valleys.

62.hydrolysis
63.wind

64 lanslide

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