Lecture 12

Arid describes climate that is a. humid and hot b. dry and desertic c. humid and cold d. cold and snowy

• humid and hot

• dry and desertic

• humid and cold

• cold and snowy

Steppe describes climate that is a. hot and humid b. cold and humid c. semi-arid d. snowy

• hot and humid

• cold and humid

• semi-arid

• snowy

Subtropical highs where air sinks, is compressed and warmed cause subtropical deserts and steppes around

• 10 degrees north and south of the equator

• 20 degrees north and south of the equator

• 30 degrees north and south of the equator

• 50 degrees north and south of the equator

Bed load transported by wind consists of a. silt b. dissolved material c. sand d. gravel

• silt

• dissolved material

• sand

• gravel

Suspended load transported by wind consists of

• silt

• dissolved material

• sand

• gravel

The lifting and removal of smaller loose material by wind is called

• abrasion

• plucking

• deflation

• ploughing

Crescent shaped dunes with horns that point downwind are called a. parabolic dunes b. transverse dunes c. barchan dunes d. star dunes

• parabolic dunes

• transverse dunes

• barchan dunes

• star dunes

Crescent shaped dunes with arms that point upwind and form on partially vegetated terrain are called

• parabolic dunes

• transverse dunes

• longitudinal dunes

• star dunes

Windblown silt that covers large areas forms deposits called

• yardangs

• badlands

• loess

• ventifacts

Most of the energy that modifies shorelines is generated by

• tides from the moon

• earthquakes

• isostatic adjustment

• wind generated waves