EES 108 Class 03

EES 108 Class 03 - Homework Review Temperature? 63F...

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Unformatted text preview: Homework Review Temperature? 63F Dewpoint? 60F Pressure? 999.8 millibar (998 99.8 999.8) Cloud cover? 50% of the sky covered by clouds Current Weather? Thunderstorm with intermittent rain Homework Review Temperature? 43F Dewpoint? 20F Pressure? 1011.7 millibar (117 11.7 1011.7) Pressure tendency? Steadily rising. Pressure rose 1.7 mb in last 3 hours Cloud cover? 0% (No significant clouds) Wind? 25 knots from southwest How does science work? How does science provide reliable knowledge? Three part method 1. Make observations, notice patterns 2. Invent hypothesis General rule describing patterns of behavior in nature To be scientific, hypothesis must be testable Falsifiability : If a scientific hypothesis is wrong, you can prove that its wrong 3. Test hypothesis Try to prove it wrong The more you try to prove it wrong, but fail, the more you can trust the hypothesis You never prove a hypothesis is correct. You just decide how much testing is enough Theories How is a theory different from a hypothesis? Two things: A theory is extensively tested and trusted A theory is more comprehensive Hypothesis describes one regular pattern Theory comprises many hypotheses Richer, more comprehensive Provides a comprehensive explanation of a wide range of natural phenomena Example Hypothesis: Whenever a parcel of air is raised 1 kilometer, its temperature will fall by 10 K Is this scientific? How could you test it? Theory: Take a collection of hypotheses and put them together to describe and explain patterns of climate around the world Ozone (O 3 ) Ozone is naturally created by interaction of oxygen molecules with ultraviolet light from sun. Creation of ozone Ozone Layer...
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EES 108 Class 03 - Homework Review Temperature? 63F...

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