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Chapter 1.  The use of knowledge to solve practical problems.  Cell phones are technology. How so?

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Presentation on theme: "Chapter 1.  The use of knowledge to solve practical problems.  Cell phones are technology. How so?"— Presentation transcript:

1 Chapter 1

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3  The use of knowledge to solve practical problems.  Cell phones are technology. How so?

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5  Chemistry: study of matter.  Physics: study of the interactions between matter and energy.  Geology: study of Earth.  Astronomy: study of the universe beyond Earth.  Biology: study of living things.

6  Chemistry: Anti-freeze in a car (lower freezing point than water), toast (oxidized the surface of the bread), synthetic fabrics  Physics: getting ketchup out of the bottle (inertia), seatbelts in cars, using a hammer  Geology: “Diamonds are a girls best friend!”  Astronomy: Orion’s Belt  Biology: YOU!

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8  Make observation  Ask question  Develop hypothesis  Test hypothesis  Analyze Data/Draw Conclusions  Develop Theory

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10  Solve a problem or better understand something.

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12  Revise the hypothesis or decide on another one.

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14  The explanation for something.

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16  A summary of an observation.  What is the difference between law and theory?

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18  Positive exponent = moving to the right  Negative exponent = moving to the left  Multiplication: Multiply numbers and add exponents  Division: Divide numbers and subtract exponents

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20  Video

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22  Line Graphs  Bar Graphs  Circle Graphs

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24  Line Graphs ◦ 1 variable  Bar Graphs ◦ Comparisons  Circle Graphs ◦ Parts of a whole

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26  One scientist looks at the work of another scientist.

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28  Writing in scientific journals.  Speaking at a conference.

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30  CHART ON PAGE 16  Meter (m)  Kilogram (kg)  Kelvin (K)  Second (s)  Mole (mol)  Ampere (A)  Candela (cd)

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32  Meter (m): length  Kilogram (kg): mass  Kelvin (K): temperature  Second (s): time  Mole (mol): amount of a substance  Ampere (A): electric current  Candela (cd): luminous intensity

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36  The use of knowledge to solve practical problems.

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38  The variable that causes a change in another variable.

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40  The variable that changes in response to the manipulated variable.

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42  The variables that are kept the same during an experiment.

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44  The variable that is kept the same during an experiment.

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46  They make it easier to observe things that might be too difficult to observe directly. ◦ Globe ◦ DNA Strand ◦ Human/Plant Cell ◦ Erupting Volcano ◦ Plastic Skeleton

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48  Science is the system of knowledge.  Technology is the use of knowledge.

49  (4.7x10(^4) ) x (10.9x10(^2) ) =

50  (3.1 x10 -2 ) x (6.0 x 10 -4 ) =

51  (3.3 x 10 4 ) / (1.1 x 10 5 ) =

52  (7.2 x 10(^-7)) / (2.1 x 10 -4 ) =

53  (2.03x10(^4) ) x (9.123x10(^2)) =

54  The measurement 75.6 seconds equals ____________________ milliseconds.

55  The measurement 63.965 kg is _______________ g.

56  The measurement 0.0529 dag is _________________ dg.

57  Convert 40ºC to K

58  Convert 88ºF to K

59  Convert 87ºF to ºC

60  Convert 7236 K to ºC


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