INTRODUCTION NOTES

disease detective solves mystery. 
          public health- is the science of preventing disease through organized community efforts
          What do you know about salmonella?
          What do you know about other outbreaks of diseases, Black death (bubonic plague), SARS
          Why should US doctors be familiar with tropical and exotic diseases?
                   Ebola, SARS, tularemia
            What did Dr. Cindy Friedmen do to solve the mystery? And why


                    She found out all kids visited the zoo, swabs barrier kids touched, cultured what was on swab
                    To keep others from getting sick, satisfy curiosity, learn about disease, and prevent future outbreaks

What could you do to prevent further outbreaks?
                    Raise barrier, glass in lizards, disinfect area regularly etc
 

 

 

 

WHAT IS SCIENCE 

SCIENCE - is a way of learning about the natural world.
          It includes all of the knowledge gained through the process of exploring the natural world
          Knowledge is always growing
          New questions and new ideas are continually explored

http://www.aquafind.com/aquablog/?postid=10  

SCIENTIFIC INQUIRY- THE WAYS IN WHICH SCIENTISTS STUDY THE NATURAL WORLD

graphical flowchart of the scientific method

1.CREATE A QUESTION- What is the problem you want to solve
2.RESEARCH - Try to find out everything you can about your problem
                   
Observation- use one or more of your senses to gather information
                    Inference- interpret observation based on prior knowledge
road runner cartoons drawn by chuck jones
3. DEVELOP A HYPOTHESIS make an educated guess as to what the answer is
4.
DESIGN AN EXPERIMENT    
              controlled experiment an experiment in which all of the variables except for one remain the same
         
   
             
variable the factor that can change in an experiment
  
           manipulated variable   (independent variable) one variable that is changed to test the hypothesis
             
responding variable (dependent variable) the factor that changes because of the manipulated variable


                   a.   write up a procedure  a step by step approach perform your experiment
                   b.   list the materials you need to do your experiment
                   c.
     draw and label your experiment


                   d.
     collect data, make measurements, record with pictures, sounds                              
                   e.
      interpret data means arranging the results in an organized way using graphs or data tables
 5.DRAW A CONCLUSION  sum up what you learned from the investigation.
    
        
        Decide whether or not the data supported your original hypothesis

        If false you will have learned something important
6. COMMUNICATE RESULTS share experiment through writing and speaking with other scientists scientific journals, meeting or the internet are very useful

****communicate with public very important in life science because it could directly affect the health and safety of people *****

International system of Units  SI  is based on the metric system of measurement this is used to scientists all over the world can communicate with each other.

Art:Customary and international system (SI) units

 SCIENTIFIC THEORY a well-tested concept that explains a wide range of observations
      Future testing can prove theory incorrect
example::   the earth is flat
      Theory was tested and found to be flawed and was abandon

 

LABORATORY SAFETY:  follow instruction, make sure you understand procedures, show respect and courtesy for teacher and classmates, wear proper safety equipment be careful keep your work are neat and clean

 

 

MICROSCOPES

TEST QUESTIONS FOR A MICROSCOPE
http://www.quia.com/jg/509402.html
 quiz
http://www.biologycorner.com/microquiz/#   take a quiz
http://homepage.smc.edu/hodson_kent/Quizzes/micro.htm  quiz
http://webinstituteforteachers.org/~viturralde/forum/microquiz.htm quiz

Identify the labeled objects and tell what each part does.
COURSE ADJUSTMENT KNOB, DIAPHRAGM, ARM, HIGH POWER OBJECTIVE, OCULAR, LIGHT OR MIRROR, TUBE, LOW POWER OBJECTIVE, STAGE, REVOLVING NOSEPIECE, BASE, FINE ADJUSTMENT KNOB, CLIPS

Describe the steps used to focus a microscope on high power.
Describe the proper technique to clean a microscope.
Name three safety steps when handling a microscope.
When you move the slide right which way does the object on the slide appear to move?


MICROSCOPE USE  SAFETY TIPS

    How do you carry a microscope (with two hands)  One on the arm and one hand on the base.
    Keep the microscope close to your body.
    Make sure the cord is not dragging.
    Keep the microscope on the middle of the table away from the edge.
    Keep the tilt joint in an upright position.

HOW DO YOU FOCUS A MICROSCOPE

1.
 Make sure the objective lens is under low power and as far above the stage as possible.
2.
 Place a dry prepared slide on the stage and center it over the object you want to see.
3.
Use the stage clips to hold the slide in place.
4.
 Using the course adjustment knob focus down toward the slide until the object is in view and as clear as possible.  
5.
 
Turn the revolving nosepiece so the high power objective is clicked into place.
6.
ONLY use the fine adjustment knob when focusing under high power
7.
ONLY focus up under high power and fine tube your view.  If you focus down you may break a slide.

CARE FOR YOU MICROSCOPE

1.
      Use lens wipe to clean objectives and oculars Not Kleenex.
2.
      Keep the stage clean and dry. 

MICROSCOPE
- enlarges the images of objects

SIMPLE MICROSCOPES have one lens
    example:  glasses or magnifying lens

COMPOUND LIGHT MICROSCOPES- has two or more lenses.  Light passes through an object and then two or more lenses.

Study the picture below to learn the parts of a microscope. The functions of these parts are explained at the bottom of this page. When you are ready, you can test your knowledge by 

taking a practice test on the parts of a microscope

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