The Scientific Method
Ask a question Research Hypothesis Test (Experiment) Analyze/Conclusion
Scientific Fact, Model, Law, & Theory
Fact - an observation that has been repeatedly confirmed; accepted as “true”
Model - Explains and predicts patterns
Law - A descriptive generalization
Theory - Well-substantatiated explanation
Pasteur
Discovered Microorganisms
Hook
Microscopes
Medel
Father of genetics
Darwin
father of modern biology
Newton
father of physics
Kepler
Mathematical calculations for determining the distances of celestial bodies
Biology
study of living organisms
Physics
– study of the forces of nature
Chemistry –
deals with the composition of substances
Geology –
study of the earth’s processes
Astronomy
– study of celestial bodies
Ecology –
the study of organism interactions with their environments
Oceanography
– study of the world’s hydrosphere (all water on earths surface)
Meteorology
Study of world’s atmosphere
Matter
anything that has mass and takes up space
physical properties
Physical properties include color, smell, density, buoyancy, boiling, freezing and melting points. If you crumble a piece of paper it has not changed chemically.
chemical properties
Chemical properties are when the matter forms another form of matter. The most common example of this is rusting.
States of matter
solid, liquid, gas, plasma
Element
a substance that cannot be broken down into other substances
most common elements within the crust of the earth
Oxygen (.46), Silicon(.28), Aluminum(.08)
Most abundant elements in Earth’s Atomosphere
nitrogen (.78), Oxygen (.20)
Chemical vs Physical change of matter
Chemical - exchanges electrons, a new substance is formed.
Physical - merely a change in appearance