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