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Understanding the world around us through the Scientific Method. Scientific Method Notes. Goals of science: To investigate , understand , and explain the natural world To predict future events using explanations. Scientific Method Notes. Scientific Method

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scientific method notes
Scientific Method Notes

Goals of science:

To investigate, understand, and explain the natural world

To predict future events using explanations

scientific method notes1
Scientific Method Notes

Scientific Method

Observation: use of the five senses to gather information (data)

quantitative: characteristic that involves numbers (counting or measuring)

b. qualitative: characteristic that is descriptive (does not involve numbers)

scientific method notes2
Scientific Method Notes

2. hypothesis:

possible explanation for a set of observations; possible answer to a scientific question

scientific method notes3
Scientific Method Notes

3. experiment: test of a hypothesis

control: experimental factor that stays the same in all tests

b. variable: experimental factor that changes between tests

Change only one variable at a time!

scientific method notes4
Scientific Method Notes

4. results: written record of observations and measurements (data) from an experiment

Example: notes, graphs, tables and charts

scientific method notes5
Scientific Method Notes

5. Conclusion: uses results to show that the hypothesis was supported (correct) or rejected (incorrect)

A good scientist would repeat his/her experiment several times and then publish the results so other scientists can repeat it as well!

1 observation
1. Observation:
  • Maggots appear on meat

that is left uncovered.

2 hypothesis
2. Hypothesis:
  • Flies produce maggots.
3 experiment
3. Experiment
  • Get several bowls of meat, cover half of them so flies cannot get in, and leave the other half opened to the flies.
a control
a. Control?

The opened bowl

Everything should be the same:

Location, temperature, type of bowl, type of meat, size of meat, time, etc.

a variable
a. Variable?

The cover (lid)

4 results
4. Results:
  • Only the uncovered bowls had maggots.
results can be shown on graphs
Results can be shown on graphs

Water Released and Absorbed by Tree

Absorbed

by Roots

(g/h)

Released

by Leaves

(g/h)

20

Water released by leaves

Time

15

8 AM

1

2

10

Relative Rates (g/h)

1

12

12 PM

5

2 PM

6

Water released by leaves

16

0

6 PM

14

10

8 AM

10 AM

12 PM

2 PM

4 PM

6 PM

8 PM

8 PM

10

3

Time

10 AM

5

4

17

4 PM

9

Data Table

Graph

4 results1
4. Results:
  • Data Table is a good

way to show results.

5 conclusion
5. Conclusion:
  • Meat does not produce maggots. The uncovered bowls produced an average of 43 maggots while the covered bowls produced No maggots.
scientific method notes6
Scientific Method Notes

Theory: hypothesis that is supported by evidence from many experiments

Allows scientists to make predictions about future events

NOT a fact – it may be revised or replaced

experiments need procedures
Experiments need Procedures
  • Bad Example:
  • Put the brown and green Lego together
experiments need procedures1
Experiments need Procedures
  • Good Example:

Take 1: 4x2 brown lego and 1: 1x4 green lego

Put the last 2 bumps of the green 1x4 on the last row of bumps on the 4x2 so that the pieces are perpendicular