Chapter 1
The use of knowledge to solve practical problems. Cell phones are technology. How so?
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.
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!
Make observation Ask question Develop hypothesis Test hypothesis Analyze Data/Draw Conclusions Develop Theory
Solve a problem or better understand something.
Revise the hypothesis or decide on another one.
The explanation for something.
A summary of an observation. What is the difference between law and theory?
Positive exponent = moving to the right Negative exponent = moving to the left Multiplication: Multiply numbers and add exponents Division: Divide numbers and subtract exponents
Video
Line Graphs Bar Graphs Circle Graphs
Line Graphs ◦ 1 variable Bar Graphs ◦ Comparisons Circle Graphs ◦ Parts of a whole
One scientist looks at the work of another scientist.
Writing in scientific journals. Speaking at a conference.
CHART ON PAGE 16 Meter (m) Kilogram (kg) Kelvin (K) Second (s) Mole (mol) Ampere (A) Candela (cd)
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
The use of knowledge to solve practical problems.
The variable that causes a change in another variable.
The variable that changes in response to the manipulated variable.
The variables that are kept the same during an experiment.
The variable that is kept the same during an experiment.
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
Science is the system of knowledge. Technology is the use of knowledge.
(4.7x10(^4) ) x (10.9x10(^2) ) =
(3.1 x10 -2 ) x (6.0 x ) =
(3.3 x 10 4 ) / (1.1 x 10 5 ) =
(7.2 x 10(^-7)) / (2.1 x ) =
(2.03x10(^4) ) x (9.123x10(^2)) =
The measurement 75.6 seconds equals ____________________ milliseconds.
The measurement kg is _______________ g.
The measurement dag is _________________ dg.
Convert 40ºC to K
Convert 88ºF to K
Convert 87ºF to ºC
Convert 7236 K to ºC