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ASU BIO 156 - Study Guide

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K) Why is it important to identify the controlled variables in your experiment? What is the "rule ofsame"?- If you don't have controlled variables, your experiment will be altered. You can't have multiplechanging variables because it will be hard to keep track of them. Having controlled variables willensure consistency.- "The Rule of Same" means certain things have to remain the same throughout the entireexperiment.L) What is the research question in the "Alka Seltzer" lab experiment?Will Alka Seltzer dissolve more quickly in warm water than cold water?Upgrade to remove adsOnly $35.99/yearM) List 2 variables that had to be controlled in your Alka Seltzer experiment.- amount of Alka seltzer- shape of Alka seltzer- type of Alka Seltzer- amount of water- size of beaker- type of water- definition of dissolve- criteria for"more quickly"N) Explain 1 way that the scientific method helps you "avoid being misled" as you try to answerquestions.1. Provides a time-tested SYSTEMATIC METHOD to Follow.2. ASSUMES you will interact with other SCIENTIFICALLY-TRAINED PEERS right from thebeginning.3. INSISTS that you consider how the RQ is worded = precise, clear.4. INSISTS that you consider MULTIPLE POSSIBLE "ANSWERS" to the RQ.5. INSISTS that you make/test predictions about the countable/measurable natural materialworld.6. INSISTS that you examine possible BIASES.7. ENCOURAGES internal and external REPEATABILITY.8. INSISTS that you think about possible variables/CONTROL GROUPS...9. REMINDS you that you will NEVER BE 100% SURE that your answer is correct = you shouldalways keep an OPEN MINDO) What a mL? What is a microgram? What is a Terameter?- 1 mL = .001 L- 1 microgram = .0000001 g- 1 Tm = 1,000,000,000,000

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