Science comes from a Latin word Scientia means “Knowledge”

Is a process that use observation and investigation to obtain knowledge .

Physical science is the study of matter and energy

The two main branches of physical science are physics and chemistry.

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

1. Life Science : deals with living things.

2.Earth Science: Study of earth and space

3.Physical science: deals with matter and energy

Is a step by step procedures to solve a problem

Six steps are seen in Scientific method

1.State the problem2.Gather the information3.Form a hypothesis.4.Test the hypothesis5. Analyze data6.Draw conclusion(7.Proclaim to the world)

Date 08/19/10

*Can be arise by observing repeated events.

*Can be arise from an activity that is not working

Do research to gather information

Collect observations

*is an educated guessIs a possible explanation for a problem using what you know, or what you observed

Perform an experiment Or design an experiment.Need two factors:_Variables (Experimental Factor)

_ Controlled factors

Is a quantity that can have more than a single value.

Can have different values.

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…)

The factor that does not change their variables

Record the data or calculations

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.

Set of hypotheses that have been supported by testing over and over again.

Can be change.

Law: Is a statement. Never Change

Is a visual idea , event, or object to help people better understanding

Something you can touch.

Use computers to build models Have complex equations that would be

too long to calculate by hand

*Compares numerical data with a picture.

*Different types have different uses

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

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Buildings

Transportation

Industrial

Often called a pie chart

divided into parts

easy to compare to whole amount.

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Production of Energy pergram

CarbohydratesProteinsFats

wide columns used

used for things like weight, height , and length.

Compare quantities over a period of time.

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

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A titleLabeled & numbered axesA consistent scale on each axisAlways have an X and Y axis.Independent variables are always on X-axis.

Dependent variables are always on Y-axis

Is a gauge of how exact a measurement isAccuracy Is the closeness of a measurement to the

actual value of what is being measured.

a. precision: degree of exactnessb. accuracy: extent to true value

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1. Neither Precise nor Accurate

2. Precise but not Accurate

3. Accurate but not Precise.

4. Accurate and Precise.