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Ing. Ivana DubovskáIng. Ivana Dubovská
Key wordsKey words sciencescience scientistscientist scientificscientific experimentexperiment
discoverdiscover discoverydiscovery inventinvent inventorinventor inventioninvention
ScientistsScientiststry to know the physical worldtry to know the physical world
by using their five sensesby using their five senses
They use They use scientific instrumentsscientific instruments like like
telescopetelescope microscopemicroscope stethoscopestethoscope and many othersand many others
Scientists perform Scientists perform experimentsexperiments
They have They have discovereddiscovered and and inventedinvented
the structure of DNAthe structure of DNA penicillinpenicillin insulininsulin polio vaccinepolio vaccine new galaxiesnew galaxies nuclear energynuclear energy
carscars planesplanes televisiontelevision mobile phonesmobile phones vacuum cleanervacuum cleaner personalpersonal computerscomputers
Some technologies make our life Some technologies make our life better and easierbetter and easier
microwavemicrowave food processorfood processor laserlaser washing machinewashing machine vacuum cleanervacuum cleaner refrigeratorrefrigerator nuclear energynuclear energy
Some technologies are used forSome technologies are used for entertainmententertainment
televisiontelevision CD playerCD player videovideo
Some technologies are both useful Some technologies are both useful and funnyand funny
mobile phonemobile phone PCPC carcar
Some modern technologies can also Some modern technologies can also be be dangerousdangerous
nuclear energynuclear energy carscars fertilizersfertilizers
Which inventions are Which inventions are necessarynecessary
Literature:Literature:
Bérešová, Hosszúrová, Macková: Nová Bérešová, Hosszúrová, Macková: Nová maturita z angličtinymaturita z angličtiny