SCIENCE!
Sustainability involves the intersection of three main components: social, economic, and environmental. These three components are collectively known as the _____.
What is the Triple Bottom Line.
Current world population level?
What is over 8 billion people.
What is 100-500 million years.
This device uses silicon to convert solar energy into electricity.
What are photovoltaic (PV) cells.
Name one way to reduce the impact of coal.
1) Clean coal technology: reduce sulfur, NOx, and other impurities before burning
2) Scrubbers: clean SO2, NOx, particulate matter, and mercury from the smoke before it leaves their smokestacks.
3) Carbon capture & sequestration separates CO2 from emissions sources and recovers it in a concentrated stream, store possibly underground
4) Mine reclamation: Land that was previously used for coal mining can be reclaimed and used for airports, landfills, and golf courses.
5) Waste products captured by scrubbers can be used to produce products like cement and synthetic gypsum for wallboard.
These are the 5 main causes behind our environmental problems.
What are Population growth, Unsustainable resource use, Poverty, “True” cost of goods and services, Isolation from nature
These show the distribution by ages of females and males within a certain population in graphic form; provide a snapshot of the current population; and represent information about the past and give potential clues about future problems
What are population pyramids (age structure diagrams).
This fuel is primarily methane.
What is natural gas.
This device converts the kinetic movement of gas molecules into the movement of electrons to produce electricity.
What are wind turbines.
The movement of energy and matter through ecosystems influences the abundance and distribution of organisms within them. Energy _____ while matter _____ in an ecosystem.
What is: Energy FLOWS, Matter cycles.
It’s important to compare the width of the _____ to the rest of the population when interpreting population pyramids.
What is the base.
Name two disadvantages to crude oil.
What is Water pollution from oil spills and leaks; Environmental costs not included in market price; Releases CO2 and other air pollutants when burned; Vulnerable to international supply interruptions
Can be used to produce heat, electricity, and fuel.
What is biomass energy.
List the proper order of steps in the scientific method.
What is: Observation, Question, Hypothesis, Prediction, Test, Conclusion
What is stage 4.
This is the most preferred type of coal to burn to generate electricity because of its high heat content and low sulfur content. However, supplies are limited in most areas.
What is anthracite coal.
This uses the relatively constant below ground temperature of the earth just 10' below us.
What are geothermal heat pumps/geothermal energy.
______: The amount of biologically active land & water needed to indefinitely supply renewable resources and absorb/recycle wastes.
What is an ecological footprint.
If a population pyramid has a narrow base compared to the rest of the pyramid, the TFR is _____ the RLF.
What is less than.
The process of releasing energy from the nucleus of a uranium 235 atom, by firing a neutron at it, is called
What is nuclear fission.
Name one advantage and disadvantage of hydrogen fuel.
What is
Advantages: Supply, emissions, efficient, silent
Disadvantages: NO infrastructure, ozone depletion, hazardous