Physical geography

Physical geography

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Physical geography

Yazoo tributary

Geography; Physical geography

Small tributary channel that is prevented from joining the main stream channel by the presence of levees. Yazoo tributaries tend to flow on the floodplain parallel to the main stream channel.

Zonal

Geography; Physical geography

Movement of wind or ocean waters in a direction that is roughly parallel to the lines of latitude.

Zone of ablation

Geography; Physical geography

Area of a glacier where losses of ice from melting, evaporation, and sublimation exceed additions of snow annually.

Zone of accumulation

Geography; Physical geography

Area of a glacier where additions of snow exceed losses of ice from melting, evaporation, and sublimation.

Wet-bulb thermometer

Geography; Physical geography

Thermometer on a psychrometer that has a moisten wick on its reservoir bulb. When ventilated this thermometer records a temperature that is modified by the cooling effects of evaporation. This ...

Wetting and drying

Geography; Physical geography

Physical weathering process where rocks are mechanically disintegrated by the accumulation of successive layers of water molecules in between the mineral grains of a rock. Sometimes called slaking.

Wind ripples are miniature sand dunes between 5 centimetres and 2 metres in length and 0.1 to 5 centimetres in height. They are created by saltation when the sand grains are of similar size and the ...