1+Physics+and+physical+measurement

BACK TO IB PHYSICS =PHYSICS AND PHYSICAL MEASUREMENT= [|IB Physics Measurement objectives in a Google doc] [|IB Physics Measurement Definitions and Concepts]
 * 1 Measure || 2 Mech || 3 Therm || 4 Waves || 5 Electric || 6 Fields || 7 Atomic || 8 EPCC || 9 MIF || 10 Therm AHL || 11 Wave Phen || 12 EMI || 13 QNP || 14 Digital || OPT || PRAC || REVIS ||
 * USEFUL DOCUMENTS**
 * PRACTICE QUESTIONS**

1.1 THE REALM OF PHYSICS
State and compare quantities to the nearest order of magnitude. Scale of the Universe - link to awesome presentation about scale State the ranges of magnitude of distances, masses and times that occur in the universe, from smallest to greatest. SIZE OF THE UNIVERSE INFOGRAPHIC - from onlinescholing.net State ratios of quantities as differences of orders of magnitude. Estimate approximate values of everyday quantities to one or two significant figures and/or to the nearest order of magnitude. [|UNIVERSCALE] - link to cool website by Nikon [|BIG NUMBERS AND STUFF PART 1] Richard Feynman talks about big numbers... [|BIG NUMBERS AND STUFF PART 2] Feynman talks about black holes and quasars... [|VERNIER SCALE APPLET][|MICROMETER SCREW GAUGE APPLET]

1.2 MEASUREMENT AND UNCERTAINTIES
media type="custom" key="27193794" PRACTICE DATA-BASED QUESTIONS
 * WALTER LEWIN AT MIT ON UNCERTAINTIES AND DIMENSIONAL ANALYSIS**

The SI system of fundamental and derived units
State the fundamental units in the SI system. Distinguish between fundamental and derived units and give examples of derived units. Convert between different units of quantities. State units in the accepted SI format. State values in scientific notation and in multiples of units with appropriate prefixes.

Uncertainty and error in measurement
Describe and give examples of random and systematic errors. Distinguish between precision and accuracy. Explain how the effects of random errors may be reduced. Calculate quantities and results of calculations to the appropriate number of significant figures.

Uncertainties in calculated results
State uncertainties as absolute, fractional and percentage uncertainties. Determine the uncertainties in results. Identify uncertainties as error bars in graphs. State random uncertainty as an uncertainty range (±) and represent it graphically as an “error bar”.

Determine the uncertainties in the gradient and intercepts of a straight line graph.

1.3 VECTORS AND SCALARS
Distinguish between vector and scalar quantities, and give examples of each. Determine the sum or difference of two vectors by a graphical method. Resolve vectors into perpendicular components along chosen axes