- Coal is burned - Sulfur in the coal combines with oxygen to form sulfur oxides - The sulfur oxides are released into the atmosphere - The sulfides combine with oxygen in the atmosphere to form sulfur trioxide - The sulfur trioxide reacts with water in the atmosphere to form sulfuric acid, a very strong acid What might be the last step of the process?
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Answer: The sulfuric acid makes the rain acidic

- Energy builds up in the crust of the earth - The energy causes the fault lines give way - The earth's plates move - The energy radiates outward from the fault in all directions What might be the last step of the process?
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Answer: The seismic waves shake the earth as they move through it.

- A conducting metal, like copper, is wrapped around a piece of metal - An electrical source, like a battery, produces an electrical current - The electrical current flows through the wire - The electrical current creates a magnetic field around the wire, magnetizing the metal What might be the last step of the process?
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Answer:
The magnetic field can be turned on and off by starting or stopping the electricity source