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NATURAL RESOURCES Materials Natural resources are natural assets (raw materials) occurring in nature that can be used for economic production or consumption.
NATURAL RESOURCES… Human centric • Earth’s naturally occurring assets that provide us benefits through the provision of raw materials and energy used in economic activity (or that may provide such benefits one day) and that are subject primarily to quantitative depletion through human use. • In other words, they will be used by humans for economic gain and we may one day run out.
Categories of Natural Resources • Mineral and Energy Resources • Soil Resources • Water Resources • Biological Resources
Natural Resources • Things people and other organisms obtain from the living and nonliving environment. • Resources provide for the needs and wants of a population (group of the same kind of organism). • All plants and animals depend on the resources in their environments to live, grow and reproduce.
Mineral Resources ??????? • Brainstorm mineral and use.
Minerals & Rocks • Red Rocks Amphitheater, Morrison CO
Energy Resources????????? • Brainstorm energy resources – Renewable or Nonrenewable???
Soil Resources??????????? • Brainstorm – what’s up with this?
Water Resources???????????? • Brainstorm water sources and whether they are potable. (What is potable?)
Water as a Natural Resource… • 97% of water on Earth is saline. • 2.4% of water on Earth is in glaciers. • 0.45% of water on Earth is in the ground (groundwater) • 0.15% of water of Earth is in lakes and streams • At any given time, 0.003% of the 0.60% of groundwater and water and lakes & streams is potable – fit for human usage • This is literally a “drop in the bucket”
The Great Lakes hold 20% of available fresh water on Earth
Biological Resources??????? • Brainstorm
Biological Resources • Quality of plants will be limited by available water and the quality of soil. • If handled wisely, largely renewable. • Cutting edge technologies are stemming from the use of many plants, however, many unforeseen problems are also arising.
Transformation of Natural Resources • People use some resources without much modification • Air for breathing • Fresh fruits and vegetables • Some spring water for drinking
Transformation of Natural Resources • People transform other resources to solve uniquely human problems. • Timber & bricks for building • Processing of raw foods into cooked & manufactured foods • Processing surface water to make it clean for drinking • Cleaning & weaving of flax, cotton & hemp for textiles and clothing.
ACTIVITY – MATERIALS I.D. LABManmade or Natural? • Goals: • To assess prior knowledge of students. • To generate interest in types and properties of materials. • To help students develop their own definition/description of each material category. • Practice classifying and justifying (critical thinking). • Practice reasoning out the origin of the materials they are categorizing. • To help students assess the origin of a material. • Credit to ASM International for lesson plan idea
What do you need to know? • What is a natural resource? • What are the 4 main categories of natural resources? • What is the purpose of a natural resource? • What are some examples of mineral resources? • What are some examples of energy resources and are they renewable? • What is the importance of soil as a resource? • What are examples of biological resources and some concerns about them? • Give some examples of how some natural resources (mineral, energy, biological, hydrological) are modified (processed or treated) for our use. • Can you identify manmade vs. natural materials and identify their origin?