Unit 6:Energy source& consumption
What is a nonrenewable energy resource?
(CED p. 138)
An energy source that cannot be replaced quickly enough for human use
What gas is the main cause of anthropogenic climate change?
(CED p. 169)
Carbon dioxide (CO₂).
What is eutrophication?
(CED p. 191)
Excess nutrients in water causing algal blooms and oxygen depletion.
What is biodiversity loss?
(CED p. 214)
The reduction or extinction of species in ecosystems.
Which fossil fuel produces the most carbon dioxide when burned?
(CED p. 145)
Coal.
What is photochemical smog?
(CED p. 174)
Air pollution formed when sunlight reacts with pollutants from vehicles and industry.
What are persistent organic pollutants (POPs)?
(CED p. 197)
Toxic chemicals that remain in the environment for long periods.
What human activity is the leading cause of deforestation?
(CED p. 218)
Agriculture and land clearing.
What is nuclear fission?
(CED p. 151)
Splitting atoms to release energy
What causes acid rain?
(CED p. 176)
Sulfur dioxide and nitrogen oxides reacting with water in the atmosphere
What is biomagnification?
(CED p. 194)
The increase of toxin concentration at higher trophic levels.
What is ocean acidification?
(CED p. 220
A decrease in ocean pH caused by dissolved carbon dioxide.
A light bulb uses 60 watts for 5 hours. How many watt-hours of energy are used?
(CED p. 141)
300 watt-hours
A factory emitted 500 tons of pollutants last year and 350 tons this year. What percent reduction occurred?
(CED p. 172)
30% reduction.
A river contains 80 mg/L of nitrates and drops to 50 mg/L after cleanup efforts. How many mg/L were removed?
(CED p. 192)
30 mg/L removed.
Global temperature increased from 14°C to 15.2°C. What was the temperature increase?
(CED p. 216)
1.2°C increase.
What is an advantage of using solar energy?
(CED p. 148)
It produces little to no air pollution while generating electricity
What is thermal inversion?
(CED p. 175)
When warm air traps pollutants close to Earth’s surface.
What is the purpose of a sanitary landfill?
(CED p. 201)
To safely contain and manage waste.
What is one effect of melting glaciers and ice caps?
(CED p. 221)
Rising sea levels