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: A {| class="wikitable"|-|[[scientistFile:Insect.png|Center|200px]] watches an |[[insectFile:CatMeow.png|Center|200px]] very carefully and saw it had 6 legs.: A |[[scientist]] listened to the [[sound]] that a [[cat]] makesFile:Flowers.: A [[scientist]] looked at lots of [[Flowerpng|flowers]] and wrote down the different [[ColourCenter|colours200px]].|-===Used in a Sentence===: |A [[scientist]] '''observes ''' the number of legs on an [[insect]].: |A [[scientist]] '''observed ''' that a cat makes a "meow" [[sound]].: |A [[scientist]] made '''observations ''' of the colour of different [[Flower|flowers]].|}

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.

: '''Present tense verbs[[Verb]]''': Observe, ObservesTo observe: '''Past tense verb[[Noun]]''': ObservedObservation ===About Observing===: We might [[Sight|watch]] and [[Hearing|listen]] and if it is safe then we might [[smell]] or even [[touch]] something to '''Nounobserve'''it. : ObservationWe might also use a [[ruler]] to [[measure]] the [[length]] of something or a [[stopwatch]] to [[measure]] how long it takes for something to happen.

: A [[scientist]] uses a [[Stopwatch|timerstopwatch]] to see how long it takes for a [[kettle]] to [[Boiling|boil]].

: A [[scientist]] [[Touch|touched]] a [[window]], a [[brick]] and some [[carpet]] to find out which one had the roughest [[texture]].

: A [[scientist]] to '''observes ''' how long it takes a [[kettle]] to [[Boiling|boil]] one cup of [[water]].: A [[scientist]] '''observed ''' the [[growth]] of a [[plant]] by taking a picture every day.: A [[scientist]] wrote down '''observations ''' of the [[texture]] of different [[Surface|surfaces]].

To '''observe''' is to collect and record information during an [[Experiment|experiment]] using [[Scientific|scientific]] tools and [[Scientific Measuring Instrument|instruments]]. Any [[data]] collected during an [[experiment]] is called an '[[Observation|observation]]'. ===About Observations===: '''Observations''' may be informal (not part of an [[experiment]]) and can be used to make a [[hypothesis]] which then leads to an [[experiment]].: Some '''observations''' are made during an [[experiment]] because the [[Dependent Variable|dependent variable]] cannot be [[measure]]d. This might happen if there is a colour change of an [[Indicator (Chemistry)|indicator]] or a [[precipitate]] is formed. In both cases these are not [[measure]]d but [[observe]]d.

===Meaning===To '''observe''' is to collect and record information during an [[Experiment|experiment]] using [[Scientific|scientific]] tools and [[Scientific Measuring Instrument|instruments]] ideally 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]].