HWRS 170A-001Earth: Our Watery Home Topic1 Lecture 2 – Scientific Method & System Approach. Best Study Notes

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HWRS 170A-001Earth: Our Watery Home Topic1 Lecture 2 – Scientific Method & System Approach Scientific Method Important Concepts Are you doing a good science? KT Asteroid Causes D... inosaur Extinction An Example of Good Science contd else it was too hot in the summer and too cold in the winter. One theory hypothesizes that the climate became too wet, while another that the climate dried out to kill off the dinosaurs. Astronomical or geophysical causes have often been invoked, for instance a change in the earth’s gravity, the axial tilt, or a reversal in the magnetic field; the supernova would have increased the solar proton flux, which would have broken down the protective ozone layer, allowing ultraviolet radiation to zap the dinosaurs. Or the supernova explosion could have sharply increased cosmic rays.46 Another imaginative hypothesis claimed that intense volcanism spewed up large quantities of radioactive elements, so that the dinosaurs died of radiation poisoning. KT Asteroid Causes Dinosaur Extinction An Example of Good Science: Contd newly ‘evolved’ flowering plants not providing the proper nutritional balance. Or the flowering plants could have evolved poisons that killed the dinosaurs; Others thought the water became poisonous with chemicals; the herbivorous dinosaurs simply changed their eating habits to a less favorable diet, causing the demise of all the dinosaurs. /dɪˈmaɪz/ We should always … Science Conceptest Doing Good Science – Another Example of Emerging Hypotheses Discussion Question Hypotheses can be tested by 2 ways Doing Science Science Conceptest Science Conceptest Bad Science Science Conceptest Science and Society 1. Protecting from natural hazards Weather satellites tracking hurricanes and predict landfall sites Doppler Radar monitoring tornadoes and warning Networks monitoring of floods help construction of levees and evacuation Strict building code for earthquakes Tsunami Warning System 3. Protect our environments Protect our environments 4. Ensure our future from global threats Science Conceptest (extra credit) Complete the following concept map by entering the most appropriate term in the box provided. Anthropocene? [Show More]

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