9/8 Today we will look at the scientific method by performing a lab Please pick up the lab sheet at the front as well as your assigned calculator. Please.

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Presentation transcript:

9/8 Today we will look at the scientific method by performing a lab Please pick up the lab sheet at the front as well as your assigned calculator. Please give me a few days to get work graded from last week. If you were absent Thursday, see me about making up the test If you were absent Friday, you will need to make up the Scientific Method Activity-see me

SCIENTIFIC METHOD Why do we care? –Effective in gaining, organizing, and applying knowledge –An organized approach in studying problems Steps?? Who is considered the “Father” of the Scientific Method?

Who is this? Galileo –1600s –Founder of Scientific Method –Principle of Inertia –Father of Astronomy, Physics, Modern Science –Controversy: Heliocentrism (opposed Aristotle, Copernicus, and the Church)

Now you tell me….. What is the correct way to take and record a measurement? Parallax and Precision

Parallax What is it?

Parallax An apparent shift in position of an object when it is viewed from different angles Location, location, location! Align eyes directly with indicator to increase accuracy.

Precision How long is the blue line? 0 ft1 mm2 mm Always estimate one place beyond smallest interval. What is the length of the blue line?

More measurement….looking for relationships

The alignment of planets in the sky determines the best time for making decisions. Consider the statement above. Is this a valid scientific hypothesis? A.Yes B.No

Variable Any factor that is apt to change the outcome of an experiment Example? Manipulated vs Dependent

Relationships Direct Inverse

Measurements  Qualitative measurements - adjectives  Quantitative measurements – involve actual numbers (quantities)  These depend on reliability of the measuring instrument.  These depend on care with which it is read.

Quantitative vs Qualitative

What type of measurement is more useful?

What two items must one always include when taking a measurement? Numerical Portion Unit