Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
15 Cards in this Set
- Front
- Back
|
The Scientific Method
|
The way in which knowledge of the physical world is obtained. a way to solve a problem. the method on which all projects should be based.
|
|
|
Steps in the Scientific Method
|
Observation Question Hypothesis Test/Experiment Results Conclusions
|
|
|
Observation
|
You observe something with your senses or machines which are extensions of those senses. cause us to become curious.
|
|
|
Hypothesis
|
A testable, tentative answer to a question. An educated guess that tries to explain our observations.
|
|
|
Experiment
|
Tests whether the hypothesis is true. Record and analyse data.
|
|
|
Conclusion
|
State whether your prediction was confirmed and try to explain your results. Compare your conclusion to existing knowledge.
|
|
|
Theory
|
A hypothesis that has been repeated a great number of times and is supported by experiments
|
|
|
Principle/Law
|
A theory that is proven to be true under all conditions
|
|
|
Limitations of the Scientific Method
|
1) The extent of our knowledge
2) Ability to interpret the results 3) Accidental discoveries 4) Ethical and legal responsibilities 5) Human error 6) Changes in the natural world - life is constantly changing/evolving so scientific findings must be constantly revised. |
|
|
Experimental Design
|
Designed so that only one factor (or variable) is being tested.
|
|
|
Bias
|
When somebody has a preferred outcome. Random selection is used to ensure that there is no bias.
|
|
|
Control
|
An experiment that is set up to compare results against the main experiment. Should only have one difference.
|
|
|
Sample Size
|
Reduces the risk of bias. Reduces the risk of jumping to conclusions. More valid results.
|
|
|
Replicate
|
An exact copy of an experiment or procedures Important: To verify results and to prevent jumping to conclusions.
|
|
|
Double Blind Testing
|
An experiment in which neither the tester nor the person being tested knows who is getting the control and who is getting the real treatment. Important as 1) The tester cannot interfere with the results and 2) It reduces bias
|
