Question 1

Most hot deserts ____________.

Accepted Answer

A)  retain their high temperatures throughout the night, because there is no vegetation to absorb heat from the sediment at the surface 
B)  cool off greatly at night, because of sparse vegetation and little cloud cover 
C)  cool off slightly at night, by no more than 10°C 
A)  retain their high temperatures throughout the night, because there is no vegetation to absorb heat from the sediment at the surface 
B)  cool off greatly at night, because of sparse vegetation and little cloud cover 
C)  cool off slightly at night, by no more than 10°C

Question 2

Most regions that are now deserts have ____________.

Accepted Answer

A)  been deserts throughout the geologic past 
B)  experienced other climates in the geologic past 
A)  been deserts throughout the geologic past 
B)  experienced other climates in the geologic past

Question 3

The iron oxides and manganese oxides that produce desert varnish on the exterior surfaces of rocks are derived from ions ____________.

Accepted Answer

A)  in the interiors of the rocks, which are transported outward by the capillary action of water 
B)  in the interiors of the rocks, which are transported outward by microorganisms 
C)  that occur naturally in rain water and precipitate out as oxides after the rain evaporates 
D)  that occur naturally on the surfaces of carbonate and silicate rocks 
A)  in the interiors of the rocks, which are transported outward by the capillary action of water 
B)  in the interiors of the rocks, which are transported outward by microorganisms 
C)  that occur naturally in rain water and precipitate out as oxides after the rain evaporates 
D)  that occur naturally on the surfaces of carbonate and silicate rocks

Question 4

The Sahara of Africa is a desert primarily because it is located ____________.

Accepted Answer

A)  in the subtropics 
B)  within the rain shadow of a mountain range 
C)  near the center of a large continent 
D)  next to a cold ocean current 
A)  in the subtropics 
B)  within the rain shadow of a mountain range 
C)  near the center of a large continent 
D)  next to a cold ocean current

Question 5

As compared to humid climates,rates of chemical weathering in deserts are ____________.

Accepted Answer

A)  much faster 
B)  much slower 
C)  very similar 
A)  much faster 
B)  much slower 
C)  very similar

Most hot deserts ____________.

Most regions that are now deserts have ____________.

The iron oxides and manganese oxides that produce desert varnish on the exterior surfaces of rocks are derived from ions ____________.

The Sahara of Africa is a desert primarily because it is located ____________.

As compared to humid climates,rates of chemical weathering in deserts are ____________.

The Earth in Context

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

The Wrath of Vulcan: Volcanic Eruptions

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

A Violent Pulse: Earthquakes

Crags, cracks, and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Riches in Rock: Energy and Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Running Water: the Geology of Streams and Floods

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Filters

Exam 17: Dry Regions: the Geology of Deserts

Most hot deserts ____________.

Most regions that are now deserts have ____________.

The iron oxides and manganese oxides that produce desert varnish on the exterior surfaces of rocks are derived from ions ____________.

The Sahara of Africa is a desert primarily because it is located ____________.

As compared to humid climates,rates of chemical weathering in deserts are ____________.

The Earth in Context

The Way the Earth Works: Plate Tectonics

Patterns in Nature: Minerals

Up From the Inferno: Magma and Igneous Rocks

The Wrath of Vulcan: Volcanic Eruptions

Pages of Earths Past: Sedimentary Rocks

Metamorphism: a Process of Change

A Violent Pulse: Earthquakes

Crags, cracks, and Crumples: Crustal Deformation and Mountain Building

Deep Time: How Old Is Old

A Biography of Earth

Riches in Rock: Energy and Mineral Resources

Unsafe Ground: Landslides and Other Mass Movements

Running Water: the Geology of Streams and Floods

Restless Realm: Oceans and Coasts

A Hidden Reserve: Groundwater

Amazing Ice: Glaciers and Ice Ages

Global Change in the Earth System

Filters