GEOL 105 EXAM 2 QUESTIONS
WITH CORRECT DETAILED
ANSWERS
When the Biological Oxygen Demand increase, that means there's high oxygen in the
water - Answer- false
Surface water pollution - Answer- Hazardous substances coming into contact with
surface water; easier to clean than groundwater
groundwater pollution - Answer- occurs when pollutants are released to the ground and
make their way down into groundwater
saltwater intrusion - Answer- an infiltration of salt water in an area where groundwater
pressure has been reduced from extensive drilling of wells; can be a result of cone of
depression and excessive groundwater pumping
Groundwater Treatment - Answer- -water passes through filter beds to remove solid
particles
-sterilise water using ozone, chlorine or uv light to kill bacteria
Wastewater - Answer- water that contains waste from homes or industry
wastewater treatment - Answer- the process of removing contaminants from wastewater
to make it safe enough to release into the environment
MCLGs - Answer- Maximum Contaminant Level Goals
The maximum level at which no adverse health effects from a lifelong exposure
SMCLs - Answer- Secondary Maximum Contaminant Levels
mineral resources - Answer- elements, chemical compounds, minerals, or rocks
concentrated in a form that can be extracted to obtain a usable commodity
economically important minerals - Answer- Backbone of modern societies
• Availability of mineral resources as a measure of the wealth of a society
• Important in people's daily life as well as in overall economy
examples of economically important minerals - Answer- gold, diamond, copper, etc
, Human use of minerals - Answer- Materials for metal production and technology
• Construction materials
• Agricultural industry (fertilizers)
• Mineral resources for chemical industry
• Others (precious gem stones, cosmetics, food, etc.)
• Energy mineral resources
concentration factor - Answer- The amount by which the metal, element, or mineral is
concentrated to make an ore deposit
environmental problems with mining - Answer- Surface mining can contribute to
groundwater pollution underground mining can cause sinkholes, miners dont properly
dump material they dig out
processing plants and refineries create air pollution during smelting processes
Biodiversity increases in areas of mining - Answer- false
Reserves - Answer- identified resources that can be extracted profitably
metallic ore - Answer- useful metallic minerals that can be mined for a profit
pollutants（pollutant） - Answer- Harmful substances in the air, water, or soil
Pathogens - Answer- Microbes that cause disease; can be a pollutant
Water is a renewable resource - Answer- false
Infiltration - Answer- the process by which water on the ground surface enters the soil
Evaporation - Answer- The change of a substance from a liquid to a gas
Some components in the water cycle are horizontal - Answer- true
The largest drainage basin in the world - Answer- Amazon River
Two drainage basins next to each other are... - Answer- adjacent
Gradient of the river increases as you get closer to the delta - Answer- false
plate tectonics - Answer- A theory stating that the earth's surface is broken into plates
that move.
Responses to Limited Availability - Answer- • Find more sources
• Find a substitute
• Recycle
WITH CORRECT DETAILED
ANSWERS
When the Biological Oxygen Demand increase, that means there's high oxygen in the
water - Answer- false
Surface water pollution - Answer- Hazardous substances coming into contact with
surface water; easier to clean than groundwater
groundwater pollution - Answer- occurs when pollutants are released to the ground and
make their way down into groundwater
saltwater intrusion - Answer- an infiltration of salt water in an area where groundwater
pressure has been reduced from extensive drilling of wells; can be a result of cone of
depression and excessive groundwater pumping
Groundwater Treatment - Answer- -water passes through filter beds to remove solid
particles
-sterilise water using ozone, chlorine or uv light to kill bacteria
Wastewater - Answer- water that contains waste from homes or industry
wastewater treatment - Answer- the process of removing contaminants from wastewater
to make it safe enough to release into the environment
MCLGs - Answer- Maximum Contaminant Level Goals
The maximum level at which no adverse health effects from a lifelong exposure
SMCLs - Answer- Secondary Maximum Contaminant Levels
mineral resources - Answer- elements, chemical compounds, minerals, or rocks
concentrated in a form that can be extracted to obtain a usable commodity
economically important minerals - Answer- Backbone of modern societies
• Availability of mineral resources as a measure of the wealth of a society
• Important in people's daily life as well as in overall economy
examples of economically important minerals - Answer- gold, diamond, copper, etc
, Human use of minerals - Answer- Materials for metal production and technology
• Construction materials
• Agricultural industry (fertilizers)
• Mineral resources for chemical industry
• Others (precious gem stones, cosmetics, food, etc.)
• Energy mineral resources
concentration factor - Answer- The amount by which the metal, element, or mineral is
concentrated to make an ore deposit
environmental problems with mining - Answer- Surface mining can contribute to
groundwater pollution underground mining can cause sinkholes, miners dont properly
dump material they dig out
processing plants and refineries create air pollution during smelting processes
Biodiversity increases in areas of mining - Answer- false
Reserves - Answer- identified resources that can be extracted profitably
metallic ore - Answer- useful metallic minerals that can be mined for a profit
pollutants（pollutant） - Answer- Harmful substances in the air, water, or soil
Pathogens - Answer- Microbes that cause disease; can be a pollutant
Water is a renewable resource - Answer- false
Infiltration - Answer- the process by which water on the ground surface enters the soil
Evaporation - Answer- The change of a substance from a liquid to a gas
Some components in the water cycle are horizontal - Answer- true
The largest drainage basin in the world - Answer- Amazon River
Two drainage basins next to each other are... - Answer- adjacent
Gradient of the river increases as you get closer to the delta - Answer- false
plate tectonics - Answer- A theory stating that the earth's surface is broken into plates
that move.
Responses to Limited Availability - Answer- • Find more sources
• Find a substitute
• Recycle
