trip to cernOnline version an interview between a school reporter and Bertha by sümeyye demirdöğen 1 How does Bertha feel about the trip? Written answer 2 What are the things that Bertha did at CERN? Written answer 3 what do CERN scientists study? Written answer 4 What does particle physics mean? Written answer 5 Who invented World Wide Web? Written answer 6 How long has it been since the invention of the WWW? Written answer 7 What happened in 1989? Written answer