\_\_\_ are typically found at the intersection of joints. A. Sinkholes B. Rivers C. Magma chambers D. Tower karst E. Volcanoes
A. Sinkholes
The silica-rich evaporate deposits that surround geysers in the Yellowstone Basin are made of a material called \_\_\_. A. Geyserite B. Travertine C. Limestone D. Dripstone E. Feldspar
A. Geyserite
A thermal karst feature that simply emits steam from small openings in the surface is called a \_\_\_. A. Fumarole B. Geyser C. Hot spring D. Magma chamber E. Geyserite
A. Fumarole
The dissolved limestone that precipitates at the points where hot springs breach the surface is called \_\_\_. A. Geyserite B. Travertine C. Rhyolite D. Magma E. Sandstone
B. Travertine
Surface runoff that disappears into a joint or sinkhole is called a \_\_\_. A. Sink river B. Swallow hole C. Disappearing stream D. Hot stream E. Pillar
C. Disappearing stream
The primary substance that results from the two main dissolution processes is \_\_\_. A. Water B. Carbon dioxide C. Calcium silicate D. Dolomite E. Calcium bicarbonate
E. Calcium bicarbonate
The primary difference between stalactites and stalagmites is their... A. Location B. Age C. Chemical composition D. Height E. Travertine content
A. Location
Bedrock that has large number of joints will experience... A. Speleothem formation B. Little dissolution C. Great precipitation D. Great dissolution E. Geysers
D. Great dissolution
It is theorized that the widespread geyser activity at Yellowstone National Park is the result of... A. Hot spring B. Volcano C. Mountain building process D. Travertine terrace E. Mantle plume
E. Mantle plume
A feature created by sediment deposition that commonly occurs in arid regions at the mouth of a draw or canyon is a(n)... A. Alluvial fan B. Playa C. Dune field D. Talus slope E. Sedimentation
A. Alluvial fan
The main dune form in most deserts is crescent-shaped ad usually found migrating across a non-sandy surface; it is called a(n)... A. Seif B. Star C. Barchan D. Arabian E. Bajada
C. Barchan
\_\_\_ are dry or seasonal lakes which form in arid landscapes, often leaving white deposits of salt, gypsum, or other materials. A. Alluvial lakes B. Playa lakes C. Piedmont lakes D. Sag ponds E. Cirque lakes
B. Playa lakes
When the winds have removed all the smaller particles, the remaining surface of rocks and gravel is called... A. Desert pavement B. Alluvial fans C. Playa lake D. Desert varnish E. Bajada
A. Desert pavement
Africa's best example of an exotic river is the... A. Amazon B. Nile C. Orange D. Congo E. Zaire
B. Nile
Besides a lack of soil, the primary reason for limited soil creep in arid regions is…
A. No wind
B. Soil creep is not limited in arid regions
C. Age of the soil
D. No water
E. Hot temperatures
D. No water
A surface created by erosion residual that extends outward from a mountain base is called a(n)... A. Inselberg B. Bornhardt C. Salina D. Playa E. Pediment
E. Pediment
The primary difference between ergs and hamadas is... A. Their rock composition B. Their age C. Their latitude of formation D. The temperatures which support them E. Their elevation
A. Their rock composition
Sand dune formation is an example of... A. Aeolian transportation B. Aeolian erosion C. Aeolian streaming D. Aeolian saltation E. Aeolian deposition
E. Aeolian deposition
The mesa-and-scarp land formation that forms from overland flow erosion and widespread ravines and gullies is called a(n)... A. Plateau B. Pinnacle C. Butte D. Badland E. Arch
D. Badland
At its maximum extent, continental glacial ice in North America extended as far south as... A. The Gulf of Mexico B. Florida C. Minnesota D. The Ohio River E. Montana
D. The Ohio River
\_\_\_ is granular snow which is beginning to coalesce into glacial ice. A. A cirque B. Ablation C. Nèvè or Firn D. An esker E. Ablation
C. Nèvè or Firn
Materials deposited during a lengthy pause in glacial retreat are known as... A. Recessional moraine B. Terminal moraine C. Medial moraine D. Eskers E. Till plain
B. Terminal moraine
The worlds largest contemporary ice sheet in the Northern Hemisphere is found in... A. Alaska B. Greenland C. The Himalayas D. Africa E. The high Cascades
B. Greenland
The slow melting of blocks of stagnant ice in the land surface is the cause of... A. Cirques B. Ground moraine C. Eskers D. Roche mountonneé E. Kettle lakes
E. Kettle lakes