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Chapter 1 Chapter 1 Section 2 Section 2 How Scientists Work How Scientists Work

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Page 1: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Chapter 1Chapter 1Section 2Section 2

How Scientists WorkHow Scientists Work

Page 2: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

The Scientific MethodThe Scientific Method

• The Scientific Method is often described as a series of steps that is used to answer question or solve a problem.

Page 3: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Steps of the Scientific MethodSteps of the Scientific Method

• 1. Make an Observation: Observations can be made with the five senses. Sight, touch, taste, feel, and hearing.

Page 4: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• 2. Ask a Question: Based on an observation.

Page 5: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• 3. Form a Hypothesis: Which is a possible explanation for what you have observed.

Page 6: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

PredictionsPredictions

• Before a scientists can test a hypothesis, they must first make predictions.

Page 7: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• A Prediction is a statement of cause and effect that can be used to set up a test for a hypothesis.

Page 8: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• Predictions are usually stated in an “If…, then…” format.

Page 9: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• 4. Test the Hypothesis: By conducting experiments.

Page 10: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• 5. Analyze the Results: Collected from experiments.

Page 11: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• 6. Draw Conclusions: From the results of your experiment.

Page 12: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• 7. Communicate Results: To other scientists.

Page 13: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Mid-Section ReviewMid-Section Review

• Using the steps of the scientific Method, explain using these steps, why anoles use their dewlaps? Explain in detail EX. How would you test your hypothesis?

Page 14: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Designing an ExperimentDesigning an Experiment

• 1. Stating the Problem.

• 2. Forming a hypothesis.

• 3. Setting up a controlled experiment.

• 4. Recording and analyzing results.

• 5. Drawing a conclusion.

Page 15: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Stating the ProblemStating the Problem

• Redi’s Experiment.

Page 16: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Forming a HypothesisForming a Hypothesis

• Redi’s experi.

Page 17: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Setting up a Controlled ExperimentSetting up a Controlled Experiment

• Redi’s experiment.

Page 18: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Recording and Analyzing ResultsRecording and Analyzing Results

Page 19: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Drawing a ConclusionDrawing a Conclusion

Page 20: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Key TermKey Term

• Spontaneous Generation: Hypothesis (Disproven) stating that life could arise from nonliving matter.

Page 21: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Setting up a controlled experimentSetting up a controlled experiment

• In science, testing a hypothesis often involves designing an experiment.

Page 22: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• The factors in an experiment that can change are called Variables.

Page 23: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• Examples of variables include equipment used, type of material, amount of material, temperature, light, and time.

Page 24: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• Whenever possible, a hypothesis should be tested by an experiment in which only one variable is changed at a time.

Page 25: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• All other variables should be kept unchanged or controlled.

• This type of experiment is called a Controlled Experiment.

Page 26: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• The variable that is deliberately changed is called the Manipulated Variable.

Page 27: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• The Variable that is observed and that changes in response to the manipulated variable is called the Responding Variable.

Page 28: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

How a Theory DevelopsHow a Theory Develops

• In Science, the word Theory applies to a well tested explanation that unifies a broad range of observations.

Page 29: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

• A theory enables scientists to make accurate predictions about new situations.

Page 30: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Section ReviewSection Review

• Pg. 15 #’s1-5

Page 31: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

Think, Pair, ShareThink, Pair, Share

• Figures: 1-10, 1-11, and 1-12

Page 32: Chapter 1 Section 2 How Scientists Work. The Scientific Method The Scientific Method is often described as a series of steps that is used to answer question

QuizQuiz

• A Theory enables?• Life could arise from nonliving matter is defined as

_______________.• What is the difference between responding variable and

manipulated variable?• List the steps of the scientific method.• What is a prediction?• What is a controlled experiment?• What is spontaneous generation?• In science, testing a hypothesis often involves:• Whenever possible, a hypothesis should be tested by:• In science the word theory applies:


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