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Scientific Method
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Scientific Method
Step-by-step way in which scientists answer questions.
1. Ask a question.
2. Research the topic.
3. Form a hypothesis.
4. Test the Hypothesis.
5. Gather Data.
6. Analyze Results.
7. Draw Conclusions
8. Communicate Results.
Hypothesis
An explanation that is based on prior scientific research or observations and that can be tested
Controlled Experiment
An experiment that tests only one factor at a time by using a comparison of a control group and an experimental group.
Control Group
The group that the scientist changes nothing in.
Experimental Group
The group that the scientist has changed something. It is the variable in the experiment.
Variable
The factor that is different from one group to another
Independent Variable
The factor that the scientist has changed in order to test the hypothesis
What is tested
What is manipulated
Dependent Variable
The result of what the scientist changed. What happened in the experiment.
What is observed
What is measured
The data collected during the investigation
Constants
They are what the scientist kept the same in both the control group and the experimental group.
Observations
Any use of the senses to gather information
Qualitative Observations
Anything that you see, smell, touch, taste, or hear.
Quantitative Observations
Any observation that can be measured. Must include a number
Model
A representation of an object or system.
Physical Model
Mathematical Model
Conceptual Model
Theory
An explanation that ties together many hypotheses and observations.
Supported by repeated trials.
May help with further predictions.
Tells why it happens.
Law
A summary of many experimental results and observations.
Tells how things work
Only tells what happens, it does not explain why.
Direct Observations
Indirect Observations
Accuracy
Precision
Inferences
Conclusions or deductions based on observations.
The process of drawing a conclusion from given evidence.
The higher the temperature of water, the faster an egg will boil. Which is dependent variable?
A. neither temperature or length
B. temperature of water
C. the length of time the egg will boil
C. length of time the egg will boil
This is the variable that is measured and observed.
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Author
jadeten2003
ID
231287
Card Set
Scientific Method
Description
Scientific Method
Updated
2013-08-26T01:33:23Z
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