Changes

To '''observe''' is to use our [[Sense|senses]] to study something very carefully or use a tool to measure something. We might [[Sight|watch]] and [[Hearing|listen]] and if it is safe then we might [[smell]] or even [[touch]] something to observe it. We might also use a [[ruler]] to [[measure]] the [[length]] of something or a [[timer]] to [[measure]] how long it takes for something to happen.

===Examples===

To '''observe''' is to collect and record information during an [[Experiment|experiment]] using [[Scientific|scientific]] tools and [[Scientific Instrument|instruments]]. Any [[data]] collected during an [[experiment]] is called an '[[Observation|observation]]'.

To '''observe''' is to collect and record information during an [[Experiment|experiment]] using [[Scientific|scientific]] tools and [[Scientific Instrument|instruments]] in a way that does not affect the [[experiment]]. In some [[Experiment|experiments]] observing is not a passive activity and the act of observing changes the [[results]] of the [[experiment]].