Environmental science semester 1 Flashcards
What is the definition of sustainable development
Development that meets the needs of the present without compromising the ability of future generations to meet their own needs
5 most harmful emission sources
industry, energy production, agriculture, households and transport
4 compartments of pollution
water, air, soil and ecology
3 most important effects of pollution
global warming, human health and biodiversity loss
4 solutions for pollutants
remediation, process changes, sustainable solutions and policies
definition of remediation
end of pipe (treatment to clean)
definition of process changes
front of pipe (source reduction or re-use)
natural attenuation
controlled disposal of the pollutant
isolation of the pollutant
with the help of sheet piling it is possible to isolate the pollutant
reactive barriers
with the use iron particles pollutants will bind
pump and treat
the pollutant will be pumped to land and treated with chemicals, micro-organisms or heat
inject and treat
with help of chemicals, micro-organisms and heat the pollutant will be dissolved
definition of salnization
the salt concentration in soil increases
4 different water erosion preventions
structural, vegetative, agronomic and management
water cycle
precipitation, evaporation, condensation, run-off and infiltration
biggest solution for water use
re-use of water
effects of sediment
reduces light penetration, bringing pollutants into water
eutrophication
Nitrogen and phosphorus increase the phytoplankton growth which causes the algae to bloom and decay. Bacteria use O2 to clean the dead algae which cause O2 shortage
definition of the greenhouse effect
gases in the earth’s atmosphere trap the Sun’s heat
definition of work
an activity involving a force in joules
definition of energy
the capacity to do work in joules
definition of power
rate of using energy in watts
thermodynamics 1st law
the total amount of energy does not change
thermodynamics 2nd law
after each energy transfer, less energy is available
three sustainable energy sources
solar, biomass and nature’s forces
