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Scientific Method Lab.

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Presentation on theme: "Scientific Method Lab."— Presentation transcript:

1 Scientific Method Lab

Scientific method- is the way scientists learn and study the world around them Scientific method starts with asking a questions and then trying to come up with the answers These questions need to be able to be answered by observing and gathering evidence, measureable in some way Observations- gathering information by using your senses Valid- truthful and confirmed, correct and accurate

Hypothesis- educated guess Experiment must use controls that are quantitative (numbers, not emotions). Science needs both the hypothesis and results to move forward. Scientists examine the data and develop newer ideas. Data- facts, figures, and evidence gathered through observations This process leads to more observations and tweaking of the hypotheses.

4 THE WHOLE PROCESS Hypothesis- a statement that uses a observations to make a guess without experimental evidence Theory- uses observations and has experimental evidence, flexible enough to be modified if new data/evidence introduced Law- stands the test of time, without change, confirmed over and over, creates true predictions for different situations, is uniform and universal Models have some experimental validity or is a scientific concept that is only accurate under limited situations. Models do not work or apply under all situations in all environments.

5 QUESTION 1:  The scientific method was developed to help scientists organize the process of solving problems. True False TRUE Scientific method is an objective step-by-step way of looking at natural events Use these methods and procedures to explain and answer questions Scientific method can be used to prove or disprove statements made by others Requires observable and quantifiable evidence and data.

6 QUESTION 2:  Which of these is not a step of the scientific method? Hypothesis Experiment Conclusion Plagiary   Plagiary Start with a problem or question Then develop a hypothesis that offers an answer to the question Develop and perform an experiment Record your results Analyze results and develop a conclusion that answers the original question

7 QUESTION 3: Disorganized
Which of these words would you NOT associate with the scientific method? Disorganized Organized Data Control Disorganized The scientific method is an organized way to help scientists (and everyone) solve problems As you complete an experiment that tests variables and has controls, you record data and results. 

8 QUESTION 4: An Educated Guess
A hypothesis is A Random Thought An Answer An Educated Guess An Experiment An Educated Guess A hypothesis is an educated guess that offers a possible answer to a problem An experiment is developed to prove the accuracy of the hypothesis

9 QUESTION 5: Number of Fruit Flies
Which of these would be called results? Number of Fruit Flies Counting Fruit Flies Seeing Fruit Flies on an Apple Wondering Why a Fruit Fly was Born Number of Fruit Flies The number of fruit flies would be the only results. The other choices are all steps in the process (Hypothesis, Experiment, Observation). 

10 QUESTION 6: Design an Experiment
What do you do to test a hypothesis? Guess Create a Spreadsheet with Data Publish a Scientific Paper Design an Experiment Design an Experiment Conduct a series of procedures to test any hypothesis Developed experiment uses variables (changing factors) and controls (unchanging examples)

11 QUESTION 7:  A control group is used as a comparison to the group where things (variables) are changing. True False TRUE The control group is a group that is not experimented on The bread without water is the control group They are used as a baseline or static group in the experiment

12 QUESTION 8:  An independent variable is a factor that changes because of procedures conducted on the dependent variable. True False FALSE A dependent variable (responding variable) is a factor that may change because of what is done to the independent variable (manipulated variable) independent variable (manipulated variable) is the variable you change on purpose

13 QUESTION 9:  Experiments are usually conducted one time and by one team to speed up the scientific process. True False FALSE Experiments are performed hundreds to times before a scientific statement is accepted as a truth. The experiment would be performed using the same procedures To prove the hypothesis, the other testing team must be able to generate the same results. 

14 QUESTION 10: Experiments often test multiple variables. True False
Experiments test for one variable If you have multiple variables you do not know what caused the difference

15 Logical Reasoning Arguments- statements Logic shows the relationships between the parts of an idea and the whole idea (example if you understand how animals interact with each other then you are able to better understand the whole ecosystem) Scientific method is a rational, logical thought process that is used to figure out facts and truths All of the answers must be able to be proved If multiple scientists do the experiment and the answer is different, someone did something wrong and everyone starts all over again.   

16 Inductive Reasoning It is in two parts:
Start with specifics and come up with a theory. That's deductive reasoning When you apply it to new areas, it is inductive reasoning You organize data into categories based on what they have in common In inductive reasoning your conclusions have more information than the facts you use You start with dozens of observed examples, take a leap, and assume millions of possible examples If the conclusion is true, then new assumptions are true

17 Other Vocabulary Scientific inquiry- refers to the ways scientists investigate the world and explain them based on evidence they gather Variables- factors that can change in an experiment Controlled experiment- only one variable is manipulated Manipulated variable- independent variable Responding variable- dependent variable Control- the group that is not manipulated or changed Operational definition- a statement that describes how to measure a variable or define a term Communicating- sharing of ideas and findings through writings or speaking

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