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Leaving cert Biology

1 - scientific method

QuestionAnswer
2018 Q7 Why is it important that scientists publish the results of their research? So that the information is made widely available and to allow peer review.
2018 Q7 How can scientists avoid bias in scientific research? Large sample sizes, replicates, double blind testing, random sampling or the use of a placebo.
2017 Q9 What is the purpose of replicates in scientific experimentation? To ensure reliability, to verify a result and to avoid bias.
2017 Q9 What is a Hypothesis? An untested explanation of an observed phenomenon.
2016 Q7 Give two examples of limitations of the Scientific Method. 1. The extent of our knowledge acts as a limitation. 2. The human error factor or our ability to interpret results.
2015 Q9 What is the purpose of a Hypothesis? To form the basis of a prediction.
2015 Q9 Explain Double-Blind Testing. Neither the experimenter nor the test group knows who gets what.
2014 Q9 Where do scientists publish the results and conclusions of their investigations? They are published in scientific journals.
2013 Q9 How does a hypothesis differ from a theory? A Hypothesis can develop into a theory.
2012 Q7 In relation to scientific method, explain (i) Data (ii) replicates. (i) Data is comprised of the information gathered from observations or results. (ii) Replicates are repeats or copies of an experiment.
2011 Q7 In relation to scientific method, explain (i) Experiment (ii) Theory. (i) An experiment is a test of a hypothesis. (ii) A Theory is a hypothesis supported by an experiment.
2010 Q8 Why is a control normally used when carrying out an experiment? For comparison within the experiment, it gives a standard for results to be observed against.
Created by: neilkelly
 

 



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