GEOG 2051 LSU Geography Exam #2
Study Guide | Namikas Test 2 Review||
GRADED A+|| LATEST UPDATE 2026/27
Salt water -CORRECTANSWER What type of water makes up 97% of earth's water?
97% -CORRECTANSWER Salt water makes up _______% of earth's water
Fresh water -CORRECTANSWER What type of water makes up 3% of earth's water?
3% -CORRECTANSWER Fresh water makes up ______% of earth's water
20% -CORRECTANSWER What percentage of freshwater is ground water?
50% -CORRECTANSWER What percentage of all ground water is shallow ground
water and can be used?
50% -CORRECTANSWER What percentage of all ground water is deep ground water
and is unusable?
80% -CORRECTANSWER What percentage of fresh water is on the surface of the
earth?
,99% -CORRECTANSWER What percentage of surface freshwater is ice?
Less than 1% -CORRECTANSWER What percentage of surface freshwater is lakes,
rivers, etc?
99% -CORRECTANSWER Ice makes up ___% of all surface freshwater
Sublimation -CORRECTANSWER A direct change in state from solid to a gas or a gas
to a solid... skips the liquid phase
Vertical movements -CORRECTANSWER Movements that involve lifting and
precipitation
Horizontal movements -CORRECTANSWER Movements that involve runoff and
advection
True: Budgets maintain the global balance so the total amount of water stays constant
over time -CORRECTANSWER T or F: The overall amount of water stays relatively
constant over time
Reservoirs -CORRECTANSWER Places that hold water
, Residence time -CORRECTANSWER Average amount of time water will spend in the
reservoir
A few days (very short) -CORRECTANSWER What is the residence time for water in
the atmosphere?
A few weeks (short) -CORRECTANSWER What is the residence time for water in
rivers?
Years / Decades (long) -CORRECTANSWER What is the residence time for water in
lakes?
Thousands of years (very long) -CORRECTANSWER What is the residence time for
water in oceans?
Aquifer -CORRECTANSWER Porous substance that holds water
Aquiclude -CORRECTANSWER Body of impermeable material that water can't
penetrate
Saturated zone -CORRECTANSWER The term for when the pore space of an aquifer is
filled with water
Study Guide | Namikas Test 2 Review||
GRADED A+|| LATEST UPDATE 2026/27
Salt water -CORRECTANSWER What type of water makes up 97% of earth's water?
97% -CORRECTANSWER Salt water makes up _______% of earth's water
Fresh water -CORRECTANSWER What type of water makes up 3% of earth's water?
3% -CORRECTANSWER Fresh water makes up ______% of earth's water
20% -CORRECTANSWER What percentage of freshwater is ground water?
50% -CORRECTANSWER What percentage of all ground water is shallow ground
water and can be used?
50% -CORRECTANSWER What percentage of all ground water is deep ground water
and is unusable?
80% -CORRECTANSWER What percentage of fresh water is on the surface of the
earth?
,99% -CORRECTANSWER What percentage of surface freshwater is ice?
Less than 1% -CORRECTANSWER What percentage of surface freshwater is lakes,
rivers, etc?
99% -CORRECTANSWER Ice makes up ___% of all surface freshwater
Sublimation -CORRECTANSWER A direct change in state from solid to a gas or a gas
to a solid... skips the liquid phase
Vertical movements -CORRECTANSWER Movements that involve lifting and
precipitation
Horizontal movements -CORRECTANSWER Movements that involve runoff and
advection
True: Budgets maintain the global balance so the total amount of water stays constant
over time -CORRECTANSWER T or F: The overall amount of water stays relatively
constant over time
Reservoirs -CORRECTANSWER Places that hold water
, Residence time -CORRECTANSWER Average amount of time water will spend in the
reservoir
A few days (very short) -CORRECTANSWER What is the residence time for water in
the atmosphere?
A few weeks (short) -CORRECTANSWER What is the residence time for water in
rivers?
Years / Decades (long) -CORRECTANSWER What is the residence time for water in
lakes?
Thousands of years (very long) -CORRECTANSWER What is the residence time for
water in oceans?
Aquifer -CORRECTANSWER Porous substance that holds water
Aquiclude -CORRECTANSWER Body of impermeable material that water can't
penetrate
Saturated zone -CORRECTANSWER The term for when the pore space of an aquifer is
filled with water
