The Endless Recovery
559 Testing Your Comprehension
1. Fossil fuels are abundant on our planet today and can be used to create many sources of energy which is why they are so prevalent. They are considered nonrenewable sources of energy because they take millions of years to form and because humans are rapidly depleting our fossil fuels faster then they can be created, which makes these fuels nonrenewable.
2. Fossil fuels were formed from the tissues of organisms that lived 100-500 million years ago. The energy these fuels contain came originally from the sun and was converted to chemical-bond energy as a result of photosynthesis. Environmental conditions determine what type of fossil fuel is formed because of the chemical composition of the starting material, the temperatures and pressures to which the material is subjects, the presence or absence of anaerobic decomposers, and the passage of time. Fossil fuels are often concentrated in localized deposits because some regions have substantial reserves of fossil fuels whereas others have very few.
3. Net energy expresses the difference between energy returned and energy invested. EROI is the ratio determined by dividing the quantity of energy returned from a process by the quantity pf energy invested in the process. These are important when evaluating energy sources because these ratios are always changing.
4. Coal is combusted and converted to water which turns to steam, this starts a turbine; this is how coal generates electricity.
5. Geologists have estimated the total amount of oil beneath the Arctic National Wildlife Refuge 1002 Area by drilling cores and conducting ground, air, and seismic surveys to map underground rock formations. This amount differs from the “technically recoverable” and “economically recoverable” because the “technically recoverable” ranges from 4.3-11.8 billion barrels, while the estimated amount ranges from 11.6-31.5 billion barrels.
6. We create petroleum products by refining hydrocarbon molecules
1. Fossil fuels are abundant on our planet today and can be used to create many sources of energy which is why they are so prevalent. They are considered nonrenewable sources of energy because they take millions of years to form and because humans are rapidly depleting our fossil fuels faster then they can be created, which makes these fuels nonrenewable.
2. Fossil fuels were formed from the tissues of organisms that lived 100-500 million years ago. The energy these fuels contain came originally from the sun and was converted to chemical-bond energy as a result of photosynthesis. Environmental conditions determine what type of fossil fuel is formed because of the chemical composition of the starting material, the temperatures and pressures to which the material is subjects, the presence or absence of anaerobic decomposers, and the passage of time. Fossil fuels are often concentrated in localized deposits because some regions have substantial reserves of fossil fuels whereas others have very few.
3. Net energy expresses the difference between energy returned and energy invested. EROI is the ratio determined by dividing the quantity of energy returned from a process by the quantity pf energy invested in the process. These are important when evaluating energy sources because these ratios are always changing.
4. Coal is combusted and converted to water which turns to steam, this starts a turbine; this is how coal generates electricity.
5. Geologists have estimated the total amount of oil beneath the Arctic National Wildlife Refuge 1002 Area by drilling cores and conducting ground, air, and seismic surveys to map underground rock formations. This amount differs from the “technically recoverable” and “economically recoverable” because the “technically recoverable” ranges from 4.3-11.8 billion barrels, while the estimated amount ranges from 11.6-31.5 billion barrels.
6. We create petroleum products by refining hydrocarbon molecules