Earth Science and M.E.A.P The benchmarks and you!

EG. Geosphere Benchmark 3 Explain how common objects are made from earth materials and why earth materials are conserved and recycled.

Valuable materials: Minerals—diamonds, salt, sulfur, etc. Metallic ores--iron, copper, aluminum, etc. Fuels—coal, natural gas, petroleum Key concepts

Types of Resources Renewable Nonrenewable Key Concepts

Mining = mineral extraction from rock

Metallic Ores are minerals such as copper, iron, aluminum, etc., that can be mined at a profit. What is an ore?

Mining Iron Ore and Copper in Michigan

Iron Ore Mining and Processing Step 1: Drill dynamite hole and blast. Step 2: Haul rock out of pit. Photos courtesy of Lisa Bouda

Step 3: Crush Primary Crusher Secondary Crusher Photos courtesy of Lisa Bouda

Step 4: Separate iron from waste rock. using flotation tanks for hematite using magnets for magnetite

Step 5: Pelletize Photo courtesy of Lisa Bouda

Mining Key concepts: Refining Manufacturing

Conservation Limits Recycling Costs for developing more remote supplies Recycling processes melting, shredding, dissolving Key concepts:

Manufacturing processes—steel mills, auto assembly lines, paper making Real-world contexts:

Local recycling center for materials, such as glass, plastic, aluminum, steel cans, motor oil

Examples of technical and social means for slowing the depletion of earth’s resources, such as developing more fuel efficient cars and mandating their use

Disposal in landfills and incinerators.