PCS 182- Midterm Exam Guide - Comprehensive Notes for the exam ( 13 pages long!)
Document Summary
The scientific method: observation, hypothesis, experiment, conclusion, reproducibility, has to be reproducible by other independent researchers, . and is falsifiable . If it does all these things, it"s alive. All known nuclear reactions: all elements are created and ejected into space. For test, might be asked beginning fuel (hydrogen) and end fuel (iron) Supernovae occur throughout a galaxy: ejected elements merge with intergalactic clouds of ~75% h, ~24% he and ~1% other: new star systems condense inside these enriched clouds, appropriate materials produce rocky/watery planets and possibly life forms, on average, 2 supernovae every 200 years in a galaxy. Many cm in humans: highly penetrating. Dense materials required for shielding lowercase p in nomenclature indicates planet, uppercase indicates star. Continental crust: lower density rock (e. g. granite, 20-70 km thick, ages range from very young rocks to oldest rocks found on earth.
