Describe the major categories of science. Learn the branches of Science

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Describe the major categories of science.Learn
the branches of Science
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What is science?

• Science comes from a Latin word Scientia means
  Knowledge
• Is a process that use observation and
  investigation to obtain knowledge .

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What is physical science?

• Physical science is the study of matter and
  energy
• The two main branches of physical science are
  physics and chemistry.

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What is Chemistry?the study of the structure
and the makeup of matter and the changes matter
undergoes

• What is physics?
• science that deals with energy and matter and
  how they interact

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Major Categories of science

• 1. Life Science deals with living things.
• 2.Earth Science Study of earth and space
• 3.Physical science deals with matter and energy

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Scientific method

• Is a step by step procedures to solve a problem
• Six steps are seen in Scientific method

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Six steps of Scientific Methods

• 1.State the problem
• 2.Gather the information
• 3.Form a hypothesis.
• 4.Test the hypothesis
• 5. Analyze data
• 6.Draw conclusion
• (7.Proclaim to the world)

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Instructional Objectives 1.Learn about
theory and Law 2.Describe the 3 types of graph.
Review QuestionsExplain the six steps of
scientific method ?Other Instructions1.Lab
Observation Lab2. Finish your work sheet and
submit before you leave.HomeworkFinish your
Vocabulary from Ch .1.Study for Safety
/equipment quiz
Date 08/19/10
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Stating a problem

• Can be arise by observing repeated events.
• Can be arise from an activity that is not working

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Gather information

• Do research to gather information
• Collect observations

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Forming a Hypothesis

• is an educated guess
• Is a possible explanation for a problem using
  what you know, or what you observed

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Testing a Hypothesis

• Perform an experiment
• Or design an experiment.
• Need two factors
• _Variables (Experimental Factor)
• _ Controlled factors

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Variables

• Is a quantity that can have more than a single
  value.
• Can have different values.

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Two types of Variables

• Dependent Variables(responding variables)
• The value change according to the
  change in the variables
• Ex. The amount of growth of a plant(can be
  change due to the amount of water , fertilizer,
  sun etc)
• Independent Variables ( manipulated Variables)
• is the variables you can change to
  see how it will effect the dependent variables
• Ex. water, fertilizer, sun etc)

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Controlled factor

• The factor that does not change their variables

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Analyzing the Data

• Record the data or calculations

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Draw Conclusion

• Based on data ,you draw a conclusion
• Ex. Out of 100, you got 98 same answer ,then your
  hypothesis will be correct
• From that you form a Theory.

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Theory

• Set of hypotheses that have been supported by
  testing over and over again.
• Can be change.
• Law
• Is a statement.
• Never Change

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Models

• Is a visual idea , event, or object to help
  people better understanding
• Something you can touch.

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High- Tech Models

• Use computers to build models
• Have complex equations that would be too long to
  calculate by hand

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Graphing

• Compares numerical data with a picture.
• Different types have different uses

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Three kinds of graphs

• 1.circle graphs,
• 2.bar graphs and
• 3.line graphs.

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Circle Graphs

• Often called a pie chart
• divided into parts
• easy to compare to whole amount.

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Bar Graphs

• wide columns used
• used for things like weight, height , and length.
  
• Compare quantities over a period of time.

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Line Graphs

• Line Graphs- compares sets of data, show change
  and patterns over time.

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Parts of a Graph

• A title
• Labeled numbered axes
• A consistent scale on each axis
• Always have an X and Y axis.
• Independent variables are always on X-axis.
• Dependent variables are always on Y-axis

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Precision

• Is a gauge of how exact a measurement is
• Accuracy
• Is the closeness of a measurement to the actual
  value of what is being measured.

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III. PRECISION VS ACCURACY

1. precision degree of exactness
2. accuracy extent to true value

3. Accurate but not Precise.
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1. Neither Precise nor Accurate
2. Precise but not Accurate
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4. Accurate and Precise.