SME
Grade 12 Science
Human impacts, resource management and engineering solutions
The main lesson, then each kind of problem it solves.
Human impacts, resource management and engineering solutions
Main lesson
Where electricity comes from
Use this for “What share of US electricity comes from fossil fuels, and what share is renewable?”
How long a reserve lasts
Use this for “400 billion barrels of oil are used at 12.5 billion a year. How many years will they last?”
How long a reserve lasts when use grows
Use this for “600 billion barrels are used at 15 billion a year, and use grows steadily by 2% a year. How many years will they last?”
How coal forms
Use this for “Describe how fossil fuels such as coal form.”