Metric Units

Metric system

Tera     10(12)                                                  Deci      10(-1)

Giga      10(9)                                                    centi   10(-2)

Mega      10(6)                                                 milli     10(-3)

Kilo          10(3)                                               micro    10(-6)

Hecto      10(2)                                               Nano      10(-9)                                                      

Deca        10(1)                                              Pico         10(-12) 

                                                                        Femto       10(-15)

-gigabyte and megabyte = computers

-error is inescapable because of inaccurate measurements.

Meniscus= a curved surface of a liquid.

Error might occur in an experiment because of:

-inaccurate measurements

-measuring always involves estimation.

Measuring instruments are never completely free of flaws.

Absolute error=    (measurement – accepted)

Absolute percent=     (measurement – accepted %) x100

                                                 Accepted

-Reo