The Scientific Method 2.0 Flashcards
What is the scientific method?
A process of investigation where problems are identified and their explanations are tested by carrying out experiments.
What are two limitations of the scientific method?
- Accidental discoveries
- Extent of our knowledge.
What is observation?
An unbiased, accurate report of an event.
What is a hypothesis?
An educated guess or idea on an observation.
What is an experiment?
A test conducted to test a hypothesis.
What is data?
Measurements, observations, and info gathered during an experiment.
What is a theory?
A hypothesis that has been supported by different experiments.
What is a variable?
A factor that has been changed in the course of an experiment.
What is a control?
A comparison used to provide a standard against which to compare the results of your investigation.
What is random selection?
The process of choosing a sample for experimentation without a method or conscious decision.
What is replication?
A repeat of an experiment.
What is double-blind testing?
An experiment where neither the tester nor the patient knows what treatment is being given.
What is a placebo?
A substance with no active ingredient used as a control in an experiment.
What information should be included in the conclusion of a scientific investigation?
- Hypothesis
- Results analysed
Why is random selection important during an experiment?
It increases reliability and reduces bias.
Why is a control used in an experiment?
To compare the results of the experiment.
What are features of good experimental design?
- Large sample size
- A control
- Repetition of experiment
- Random selection
- Double-blind testing
Where do scientists publish results of an experiment?
Scientific Journal.
Why should scientists publish their results?
- To make information widely available.
- Spread knowledge.
What should be included in a conclusion for a scientific journal?
- Results analysed
- Hypothesis confirmed
What is the purpose of carrying out an experiment?
To test the hypothesis.
Why is an experiment repeated?
To ensure reliability.
