Significant Figures Scientific Notation Physics Significant Figures Indicate

Significant Figures & Scientific Notation Physics

Significant Figures Indicate accuracy of measurements Several rules for # of significant figures. . – Non-zero digits are always significant. – Any zeros between two significant digits are significant. – A final zero or trailing zeros in the decimal portion ONLY are significant.

Accuracy vs. Precision Accurate? Precise? Both? Neither?

Accuracy vs. Precision

Significant Figures Indicate accuracy of measurements Several rules for # of significant figures. . – Non-zero digits are always significant. – Any zeros between two significant digits are significant. – A final zero or trailing zeros in the decimal portion ONLY are significant.

Significant Figures Indicate accuracy of measurements Several rules for # of significant figures. . – Non-zero digits are always significant. – Any zeros between two significant digits are significant. – A final zero or trailing zeros in the decimal portion ONLY are significant. 138. 44 0138. 44

Significant Figures Indicate accuracy of measurements Several rules for # of significant figures. . – Non-zero digits are always significant. – Any zeros between two significant digits are significant. – A final zero or trailing zeros in the decimal portion ONLY are significant. 5009 80210

Significant Figures Indicate accuracy of measurements Several rules for # of significant figures. . – Non-zero digits are always significant. – Any zeros between two significant digits are significant. – A final zero or trailing zeros in the decimal portion ONLY are significant. 290. 0 9. 01000

Scientific Notation – Common technique used to express very large or very small numbers. – Large #: Mean distance from Earth to Sun – 93, 000 miles – Small #: Mean distance across a helium atom – 0. 00000008699 miles – Maintain accuracy! (Keep same # of significant figures) – Only 1 significant figure to the left of the decimal point.

Scientific Notation – Common technique used to express very large or very small numbers. – Large #: Mean distance from Earth to Sun – 93, 000 miles – Small #: Mean distance across a helium atom – 0. 00000008699 miles – Maintain accuracy! (Keep same # of significant figures) – Only 1 significant figure to the left of the decimal point.

Scientific Notation – Common technique used to express very large or very small numbers. – Large #: Mean distance from Earth to Sun – 93, 000 miles – Small #: Mean distance across a helium atom – 0. 00000008699 miles – Maintain accuracy! (Keep same # of significant figures) – Only 1 significant figure to the left of the decimal point.

Scientific Notation – Common technique used to express very large or very small numbers. – Large #: Mean distance from Earth to Sun – 93, 000 miles – Small #: Mean distance across a helium atom – 0. 00000008699 miles – Maintain accuracy! (Keep same # of significant figures) – Only 1 significant figure to the left of the decimal point.