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WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT? WHAT ARE THE STEPS OF THE SCIENTIFIC METHOD?

WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

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WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT? WHAT ARE THE STEPS OF THE SCIENTIFIC METHOD?. RANGE OF SCIENTIFIC RESEARCH DESCRIPTIVE RESEARCH COMPARATIVE DATA ANALYSIS EXPERIMENTAL. DESCRIPTIVE RESEARCH Describing nature using known physical biological or chemical properties - PowerPoint PPT Presentation

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Page 1: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

WHAT IS “SCIENTIFIC RESEARCH?”

WHY DO SCIENTISTS USE IT?

WHAT ARE THE STEPS OF THE SCIENTIFIC METHOD?

Page 2: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

RANGE OF SCIENTIFIC RESEARCH

DESCRIPTIVE RESEARCH

COMPARATIVE DATA ANALYSIS

EXPERIMENTAL

Page 3: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

DESCRIPTIVE RESEARCH

Describing nature using known physical biological or chemical properties

Often used on things we can’t work with in the labEx- center of the earth

stars, galaxies

Page 4: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

Linking two things together by analyzing data

Ex- Smoking linked to lung cancer

Page 5: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?
Page 6: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

Steps Of The Scientific Method

1. State the problem (in the form of a question)

2. Research the subject

3. State a hypothesis

4. Design and perform an experiment

5. Record results and analyze

6. State your conclusion

Page 7: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

1. PROBLEM STATEMENTAsks a question based on an

observation

2. RESEARCH THE SUBJECT

3. STATE A HYPOTHESISAnswers the problem statementIf……….., then………. StatementUse the same terms as in the Problem

Statement

Page 8: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

4. EXPERIMENT DESIGNUse two groups: Experimental Group

Control Group

In Experimental Group –

Independent variable – what you change

Dependent variable – what responds to the I.V.

Constants/Controlled Variables– things that remain the same

(You do not want “hidden variables”)

The Control Group - is for comparison, doesn’t contain the independent variable

Page 9: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

5. RECORD RESULTS AND ANALYZEQuantitative Data- (the numbers)Record data in chart, then graph Analyze data for trends which answer problem statement/hyp.

Qualitative Observations- relevant observations listed

Page 10: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

Quantitative or Qualitative?

• The dog is 42 pounds.

• The dog is fat.

• There are three trees in the field.

• The trees are tall.

Page 11: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

6. STATE YOUR CONCLUSION

Write a statement that answers the problem statement, addresses your hypothesis and mentions the data for support. A conclusion is an INFERENCE based on observations and prior knowledge.

Page 12: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

Observation or inference?

• The plant is green

• The plant is green thus I believe it is alive.

• The woman is married.

Page 13: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

Observation or inference?

• The woman is married.

• The woman is wearing a wedding band thus I believe that she is married.

• Miracle Gro makes plants grow faster.

Page 14: WHAT IS “SCIENTIFIC RESEARCH?” WHY DO SCIENTISTS USE IT?

Observation or inference?

• The plant is green• The plant is green thus I believe it is alive.• The woman is married.• The woman is wearing a wedding band thus I

believe that she is married.• Miracle Gro makes plants grow faster.• Because the plants with m.g. were taller than the

plants w/o m.g., I believe Miracle Gro makes plants grow faster.