Scientific Method Flashcards
(14 cards)
D (FINE WHAT IS MEANT BY OBSERVATION A ND STATE ITS ROLE
when something is noticed
provides a basis for all the information relating to the Problem.
DEFINE WHAT IS MEANT BY HYPOTHESIS AND STATE ITS ROLE
An Educated guess based on the observation.
To form the Basis of a Prediction.
DEFINE WHAT IS MEANT BY EXPERIMENTATION
used to test
DEFINE WHAT IS MEANT BY DATA
The measurements and information gathered from experiments
DEFINE WHAT IS MEANT BY A THEORY
A hypothesis that has been supported by numerous experiments.
DEFIINC WHAT IS MEANT BY A LAW /PRINCIPLE
A THEORY THAT HAS BEEN SHOWN TO BE CORRECT WHEN TESTED OVER A LONG PERIOD OF TIME
DEFINE A CONTROL
used to provide d comparison against the experiment
DEFINE A REPLICATE
w hen an experiment is repeated
To Ensure reliability and avoid Bias
DEFINE A VARIABLE
The factor that changes during an experiment
Only one variable is changed to make the experiment fair
STATE HOW EXPERIMENTS CAN BE CARRIED OUT FAIRLY
LARGE SAMPLE SIZEm
increases accuracy of results.
2) RANDOM SELECTION.
to avoid Bias and create greater reliability.
3)DOUBLE BLIND TESTING
Neither the tester of subject know who is recieving the real drug or the Placebo
Helps avoid bias
D EFINE DOUBLE BLIND TESTING
Neither the tester or subject know who is getting the drug or th placebo
D EFINE PLACEBO
a harmless drug given to patients in the control group in an investigation of a certain drug
STATE WHY RANDOM SELECTION AND DOUBLE BLINDING TESTING S IMPORTANT How does it avoid bias ?
DEFINE E THICAL ISSUES AND GIVE TWO EXAMPLES.
Ethics argues if something is right or wrong
E9. Freezing embryos , cloning animals , organ transplants.
