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How Human Energy Systems. depend on CARBON and CHEMICAL ENERGY from FOSSIL FUELS. What are fossil fuels?. Driving q uestion. Examples of f ossil fuels. coal. oil. gasoline. natural gas. Is gasoline organic or inorganic?. ZOOMING INTO FOSSIL FUELS.
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How Human Energy Systems depend on CARBON and CHEMICAL ENERGY from FOSSIL FUELS
What are fossil fuels? Driving question
Examples of fossil fuels coal oil gasoline natural gas
Is gasoline organic or inorganic? ZOOMING INTO FOSSIL FUELS
What we see… Macroscopic Scale GASOLINE
Zooming in… Atomic-molecular Scale Gasoline (C8H18)
What is gasoline most similar to in terms of atoms? Water molecule (H2O) Ethanol molecule (C2H6O) Gasoline (C8H18) Cellulose (C6H10O5)m Carbon dioxide (CO2)
What is gasoline most similar to in terms of bonds? Water molecule (H2O) Ethanol molecule (C2H6O) Gasoline (C8H18) Cellulose (C6H10O5)m Carbon dioxide (CO2)
Which group would gasoline fit into? ORGANIC INORGANIC --means the molecule is CARBON-BASED --and the molecule has C-C and C-H bonds --means the molecule is not CARBON-BASED --and the molecule does not have C-C and C-H bonds
How did fossil fuels form? FOLLOW THE CARBON
Over millions of years… …coal and other fossil fuels are formed from plant materials
CO2 photosynthesis 300 million years ago
Follow the carbon CO2 photosynthesis Buried Extracted from the ground squished & heated 300 million yrs ago today
How do humans use fossil fuels, and when did we begin using them? Driving question
Industrial revolution 1750 -1850– Changes in agriculture, manufacturing, mining, transportation and technology
300 million year old organic carbon Organic fossil fuels provide stored energy for human systems
Combustion of fossil fuel releases CO2 This CO2 is called carbon emissions 300 million year old organic carbon
Carbon emissions (CO2 released from burning fossil fuels) are also called greenhouse gases, because they amplify the greenhouse effect.
More CO2 in the atmosphere traps more of the sun’s energy, heating the planet