43.Glacial moraines are made of till. False 41.There have only been 4 Ice Ages t
ID: 118826 • Letter: 4
Question
43.Glacial moraines are made of till.
False
41.There have only been 4 Ice Ages throughout the Earth's geologic history.
False
36.A fjord is a relatively straight bay that was formed by sea level rise drowning a U-shaped glaciated valley.
False
33.The California Central Valley is a glacial trough.
False
31.Nuclear Winters can be caused by volcanic ash, meteor impacts . and/or a global nuclear war (hence the name).
False
28.Caves can only form in limestone.
False
27.Which geyser has a smaller volume of underground interconnected chambers for holding water before its eruptions?
24.Most Karst topography is created by groundwater dissolving holes in limestone or marble rock.
False
23.A cone of depression is a permanent lowering of the water table that usually means that the well must be deepened in order to be able to continue to draw water out of the ground.
False
21.Large "classic" caves, such as Carlsbad Caverns, are usually formed in what type of rock?
16.Most Karst topography is created by volcanic gases and vesicles.
False
15.In general, geysers that erupt often (very hour or so), do not erupt for very long (few minutes). Similarly, geysers that have longer intervals (every 5-10 hours) between eruptions usually have eruptions which last longer (10-20 minutes).
False
12.Artesian wells do not flow naturally and have to be pumped.
False
10.A rock with hi porosity may not be a good aquifer.
False
9.Most of the world's caves (such as Carlsbad Caverns), with stalactite and stalagmites and columns, are in granite.
False
7.If the top of a well is above the water table (or pressure surface), the well will not flow naturally and will have to be pumped.
False
6.Most of the world's caves (such as Carlsbad Caverns), with stalactite and stalagmites and columns, are in lava tubes and talus cones.
False
5.If the top of a well is above the water table (or pressure surface), the well will flow naturally and will not have to be pumped.
False
3.Natural springs occur where the groundwater table reaches the topographic surface of the ground it's where the aquifer is leaking.
False
54.What is the major source of moisture needed to generate glaciers?
53.Which state would you not expect to contain drumlins, eskers, and kettle lakes?
47.A Valley glacier is also called an alpine glacier.
False
46.The Grand Canyon is a glacial crevasse from the Ice Ages.
False
45.Glacial ice was once snow.
False
44.A retreating glacier gets shorter while the ice still moves downhill.
False
43.Glacial moraines are made of till.
False
41.There have only been 4 Ice Ages throughout the Earth's geologic history.
TrueExplanation / Answer
43.Glacial moraines are made of till.
A moraine is an accumulation of unconsolidated glacial debris or till.
41.There have only been 4 Ice Ages throughout the Earth's geologic history.
Answer - False
There have been atleast 5 major Ice ages throughout Earth's Geological history. (Huronian, Cryogenian,Andean-Saharan, Karoo and Quaternary glaciation)
36. A fjord is a relatively straight bay that was formed by sea level rise drowning a U-shaped glaciated valley.
Answer - True
33. The California Central Valley is a glacial trough.
Answer - False
The Central Valley is a sediment-filled depression formed as a forearc basin more than 65 million years ago when subduction was taking place off the coast of California.
31. Nuclear Winters can be caused by volcanic ash, meteor impacts . and/or a global nuclear war
Answers - False
Nuclear winters are caused solely by Nuclear events.
28.Caves can only form in limestone.
Answer - False
Caves can also be formed under a lava flow. It is known as a Lava tube cave or Primary cave. Sea caves can form in any type of rock be it basalt or sandstone. Similarly Glacial caves also form independent of Lithology.
27.Which geyser has a smaller volume of underground interconnected chambers for holding water before its eruptions?
Answer - Castle Geyser, which erupts for 20 minutes every 9-10 hours
24.Most Karst topography is created by groundwater dissolving holes in limestone or marble rock.
Answer - True
Most Karst topography is created by grpundwater dissolving holes in limestones. Marble rock Karst is rarely observed.
23.A cone of depression is a permanent lowering of the water table that usually means that the well must be deepened in order to be able to continue to draw water out of the ground.
Answer - False
When water is withdrawn from the well, water table is lowered and a cone of depression is formed. It is not permanent as water table can rise by sufficientl water infiltration.
21.Large "classic" caves, such as Carlsbad Caverns, are usually formed in what type of rock?
Answer - Limestone
16.Most Karst topography is created by volcanic gases and vesicles.
Answer - False
Most Karst topography is created by water and its solutional activity over limestone.
15.In general, geysers that erupt often (very hour or so), do not erupt for very long (few minutes). Similarly, geysers that have longer intervals (every 5-10 hours) between eruptions usually have eruptions which last longer (10-20 minutes).
Answer - True
Old faithful is a hourly geyser and erupts only for a few minutes, whereas Castle geyser has a 9-10 hour cycle but erupts for 20 minutes.
12.Artesian wells do not flow naturally and have to be pumped
Answer - False
Artesian wells are under rock pressure and the groundwater under pressure rises above the level of aquifer.
10.A rock with hi porosity may not be a good aquifer.
Answer - True
It is possible to have a highly porous rocks with little interconnections between pores.
9.Most of the world's caves (such as Carlsbad Caverns), with stalactite and stalagmites and columns, are in granite.
Answer - False
They are in Limestones
7.If the top of a well is above the water table (or pressure surface), the well will not flow naturally and will have to be pumped.
Answer - False
If the Well top is above te water tabel, it will flow naturally
6.Most of the world's caves (such as Carlsbad Caverns), with stalactite and stalagmites and columns, are in lava tubes and talus cones.
Answer - False
They are in Limestone. Stalactites, Stalagmites and columns are exclusive Karst features.
5.If the top of a well is above the water table (or pressure surface), the well will flow naturally and will not have to be pumped.
Answer - True
3.Natural springs occur where the groundwater table reaches the topographic surface of the ground it's where the aquifer is leaking.
Answer - True
54.What is the major source of moisture needed to generate glaciers?
Answer - Oceans
53.Which state would you not expect to contain drumlins, eskers, and kettle lakes?
Answer - Kentucky
As it falls below the limits of the extent of Quaternary glaciation
47.A Valley glacier is also called an alpine glacier.
Answer - True
46.The Grand Canyon is a glacial crevasse from the Ice Ages.
Answer -- False
It was formed due to extensive river erosive action
45.Glacial ice was once snow.
Answer - True
It was turned into ice due to compaction resulting from overburdening of snow.
44.A retreating glacier gets shorter while the ice still moves downhill.
Answer- True
43.Glacial moraines are made of till.
Answer - True
Till = unconsolidated Glacial debris
41.There have only been 4 Ice Ages throughout the Earth's geologic history.
Answer - False
There have been atleast 5 major Ice ages throughout Earth's Geological history. (Huronian, Cryogenian,Andean-Saharan, Karoo and Quaternary glaciation)
Answer - TRUEA moraine is an accumulation of unconsolidated glacial debris or till.
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