Ing. Ivana Dubovská

Key words  science  scientist  scientific  experiment  discover  discovery  invent  inventor  invention

Scientists try to know the physical world by using their five senses

They use scientific instruments like  telescope  microscope  stethoscope  and many others

Scientists perform experiments

They have discovered and invented  the structure of DNA  penicillin  insulin  polio vaccine  new galaxies  nuclear energy  cars  planes  television  mobile phones  vacuum cleaner  personal computers

Some technologies make our life better and easier  microwave  food processor  laser  washing machine  vacuum cleaner  refrigerator  nuclear energy

Some technologies are used for entertainment  television  CD player  video

Some technologies are both useful and funny  mobile phone  PC  car

Some modern technologies can also be dangerous  nuclear energy  cars  fertilizers

Which inventions are necessary

Literature:  Bérešová, Hosszúrová, Macková: Nová maturita z angličtiny