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earthresources - Physical Geology 101 35 Earth's...

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Physical Geology 101 1 35. Earth's Resources (p. 628-642) Renewable and Nonrenewable Resources Earth's resources refers to anything we use or extract from the Earth to benefit society, whether it be in the products we make, the energy we generate, or food we grow. List some of Earth's resources: ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ ________________ We can divide all these resources into two categories: ______________________ and _______________________ What makes a resource renewable ? ___________________________________________________ _____________________________________________________________________ Example 1: _________________: harnessing its energy does not deplete the source of this energy, so it is a renewable resource. Example 2: _______________________: they are cultivated each season, but they are replaced by a new crop the next year. What makes a resource nonrenewable ? _______________________________________________ _____________________________________________________________________ Example 1: _________________: gets lowered by overpumping. The water will probably be replenished eventually by infiltration and groundwater flow, but over 100s/1000s of years, which may not be in time to save an agricultural region from failure. Example 2: _________________: removal by over-cultivation or accelerated erosion due to the influences of humans. Although soil will eventually be regenerated by the process of weathering of solid rock, this occurs over a long period time- 10s of 1000s of years. Example 3: ______________________: mined for human consumption (e.g., coal, oil, copper, iron, gold, and phosphates/fertilizer). Once removed from the Earth, they are gone for good. It may take _______________________ years to develop new economic mineral deposits. Although much of the resources of the Earth extracted for human use are comprised of metallic and nonmetallic minerals, we will focus here on the energy resources needed to meet humankind s ever- increasing energy demands as the population increases. What was the population of the Earth in 2003: ______________________
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Physical Geology 101 2 Fossil Fuels Both renewable and nonrenewable resources are used for energy consumption. Renewable energy resources include: _________________, ______________, and __________________ However, the majority of our energy production (______%) comes from nonrenewable resources such as: _____________, _____________, ________________, and ___________________. Any energy resource that forms from organic matter such as decaying plants and animals is called a _____________________. Name four: 1) _____________ 2) _____________ 3) _____________ 4) _____________ The type of fossil fuel that develops depends on the type of organic matter and the changes that the organic matter undergoes after it has been buried in the ground. Peat and Coal Organic matter that accumulates on land comes from ____________, ___________, and ____________. These plants are rich in organic matter that stays solid after burial. If there is a lot of water present (e.g., ____________ and ____________), the remains of these plants accumulate to form ____________.
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