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Geology 105 - Dynamic Earth Test Questions with
Correct Answers Fully Solved
geothermal energy - (answers)the earth gets hotter the deeper we go
-geothermal gradients are steeper in volcanic regions
1) heat is constantly radiating from the mantle
2) heat is produced by radioactive decay of elements
3) heat from magma intrudes into shallow crustal levels
the hot dry rock concept
heat mining
enhanced geothermal systems (EGS) - (answers)1) water is pumped down
injection wells
2) picks up heat from hot, fractured rock
3) hot water returns up production wells
4) heat used to drive turbines via heat exchanger
5) produces direct heat for space heating as a by-product
6) cooled water is re-circulated
principle of uniformitarianism - (answers)proposed by James Hutton- the
geological processes that we see operating today are the same from the past
, 2
the earth's two dynamic systems - (answers)1) the interior heat engine (primary) -
forms ocean basins, mountain ranges, volcanoes and earthquakes
2) exterior heat engine (secondary) - responsible for climate, storms, glaciers,
rivers, erosion and sediment
geological time - (answers)scientific revolution - the earth is much older than we
think it is, deviates from being based on reconstruction of biblical history
Hutton's law of superposition - (answers)in an undisturbed sequence of rocks
deposited in layers, the youngest layer is on top and the oldest on bottom, each
layer being younger than the one beneath it and older than the one above it
-accumulation rates of sediments are less than a few mm each year
Siccar Point, Scotland - (answers)-young, flat-lying rocks
-unconformity, old folded rocks
-means that the earth must be millions of years old
how unconformities are produced - (answers)-sediments slowly deposit on ocean
floor
-folded and uplifted into mountains
-mountains gradually erode away, making hills, valleys, and then a flat plain
-plain sinks below the sea and new sediments are deposited
Geology 105 - Dynamic Earth Test Questions with
Correct Answers Fully Solved
geothermal energy - (answers)the earth gets hotter the deeper we go
-geothermal gradients are steeper in volcanic regions
1) heat is constantly radiating from the mantle
2) heat is produced by radioactive decay of elements
3) heat from magma intrudes into shallow crustal levels
the hot dry rock concept
heat mining
enhanced geothermal systems (EGS) - (answers)1) water is pumped down
injection wells
2) picks up heat from hot, fractured rock
3) hot water returns up production wells
4) heat used to drive turbines via heat exchanger
5) produces direct heat for space heating as a by-product
6) cooled water is re-circulated
principle of uniformitarianism - (answers)proposed by James Hutton- the
geological processes that we see operating today are the same from the past
, 2
the earth's two dynamic systems - (answers)1) the interior heat engine (primary) -
forms ocean basins, mountain ranges, volcanoes and earthquakes
2) exterior heat engine (secondary) - responsible for climate, storms, glaciers,
rivers, erosion and sediment
geological time - (answers)scientific revolution - the earth is much older than we
think it is, deviates from being based on reconstruction of biblical history
Hutton's law of superposition - (answers)in an undisturbed sequence of rocks
deposited in layers, the youngest layer is on top and the oldest on bottom, each
layer being younger than the one beneath it and older than the one above it
-accumulation rates of sediments are less than a few mm each year
Siccar Point, Scotland - (answers)-young, flat-lying rocks
-unconformity, old folded rocks
-means that the earth must be millions of years old
how unconformities are produced - (answers)-sediments slowly deposit on ocean
floor
-folded and uplifted into mountains
-mountains gradually erode away, making hills, valleys, and then a flat plain
-plain sinks below the sea and new sediments are deposited
