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4 parts to Earth’s system:
1) Atmosphere - carbon dioxide (CO2)
- free oxygen (O2)
- water vapor (H2O)
Science
Attempts to understand, explain, and predict events
- collects data to discover patterns in natural world
Uniformitarianism (p. 325)
1787: James HuttonPhysical, chemical, & biologic
laws unchanged through time- forces which appear small can
produce features very largeEx: Colorado River and Grand
Canyon
Scientific Process
2) Explain how or why it happens(hypothesis)
3) Design experiment to test validity of hypothesis
Scientific Process
4) Accept, modify, or reject hypothesis
Theory – well-tested framework that best explains the observations
Scientific Revolution
New information leads to a better explanation of observations
Occurs due to:a) new approach to the
question
b) new technology