Day 3 January 17th 2012 Scribd

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Day 3 January 17th

2012

Clickers lets try it again!


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So, is eyewitness testimony always

reliable?

1.Yes

2.No


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Can Animals Be Superstitious?


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Can Animals Be Superstitious?

1.Yes

2.No


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Definition ofSuperstition

that one event leads to the cause of another

without any process in the physical world

linking the two events.


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Why does Tipsy do this?

Because it seems to work!

Associate two events together

Athletes are often superstitious Fairy tales, epic stories

Stories about birth, death, healing

Superstition is no substitution forunderstanding how the world works.

Scientific method


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Clever Hans

Hans could

only answer

the question

if he couldsee his

trainer!


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Experimental Designs

Blind experimental design

The experimental subjects do not know whichtreatment (if any) they are receiving.

Double-blind experimental design

Neither the experimental subjects nor the

experimenter knows which treatment thesubject is receiving.


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Making Wise DecisionsAbout Concrete Things

Does having access to a textbook help astudent to perform better in a biology

class?

Students who had access to a textbookscored an average of 81% 8% on their

exams while those who did not scored an average

of 76% 7%.


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1. Pseudoscience: individuals makescientific-sounding claims that are notsupported by trustworthy, methodicalscientific studies.

2. Anecdotal observations: based on onlyone or a few observations, people

conclude that there is or is not a linkbetween two things.


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Four out of five dentists surveyedrecommend sugarless gum for their patients

who chew gum.

How do they know what they know?

Maybe the statement is factually true, but thegeneral relationship it implies may not be.


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Anecdotal Observations

do not include asufficiently large andrepresentative set of

observations of theworld

data are more

reliable thananecdotes


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Science is a way to call the bluff of thosewho only pretend to knowledge. It is abulwark against mysticism, against

superstition, against religion misapplied towhere ithas no business being. If weretrue to its values, it can tell us when werebeing lied to.

Carl Sagan


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Chapter 2: Chemistry

Raw materials and fuel for our bodies

Lectures by Mark Manteuffel, St. Louis Community College; Clicker Questions by Kristen Curran, University of Wisconsin-Whitewater


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2.1 Everything is made of atoms.

An element is asubstance that cannotbe broken down

chemically into any ot

hersubstances.

An atom is a bit of

matter th

at cannot besubdivided any furtherwithout losing itsessential properties.


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Atomic Numbers


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25Elements Found in Your Bodyand the Big 4


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2.3 Atoms can bond together to form

molecules or compounds.


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Covalent Bonds


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Ions and Ionic Bonds


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2.4 A molecules shape gives itunique characteristics.

Molecular Personalities

Shape determines function Physical properties such as:

Taste

Smell


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Molecular Interactionsand InsectMating Behavior

Think

aboutour

termite

lab!


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Day 3 January 17th 2012 Scribd

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