What do scientists do? (1 point), They only work in hospitals., They do research and make discoveries., They only repair machines., All options are correct., What is an invention? (1 point), A new product or device created to solve a problem., A person who works in a laboratory., A scientific experiment., A Person who works in a hospital, A person who studies living organisms is a… (1 point), A chemist, A doctor, A biologist, An inventor, A person who studies chemicals is… (1 point), A chemist, A doctor, A researcher, An inventor, A person who designs machines and structures is…(1 point), A doctor, An engineer, An inventor, A biologist, A person who works in a hospital is a... (1 point), A doctor, An inventor, A researcher, A biologist, It is wireless. It is comfortable. You use it to listen to music. (2 points), TV, Camera, Headphones, Smartphone, When I arrived at the laboratory, the scientists ______ already ______ their experiment. (2 points), had / finished, didn't / finish, has / finished, have / finished, The machine didn't work because we ______ to switch it on. (2 points), forgot, had forgotten, have forgotten, had forgot, She was excited because she ____________ a new invention. (2 points), had dicover, discovered, had discovered, has discovered, Paul had gone home when I ______________ at the laboratory. (2 points), have arrived, arrived, has arrived, arrive, Which happened first? (2 points), She developed the product., She did some research., Thomas Edison was an inventor ______ created many important inventions. (2 points), where, who, whose, when, This is the laboratory ______ scientists do their experiments. (2 points), who, whose, where, when, This is the invention ______ changed the world. (2 points), who, that, where, whose, Mary Anderson, the woman ______ invention was the windscreen wiper. (2 points), who, where, when, whose, Who invented the telephone? (3 points), Graham Bell, George Romero, Nikola Tesla, Lionel Messi, Nathaniel Baldwin designed... (3 points), the telephone, headphones, smartwatches, laptops, The first headphones were used for... (3 points), Music, Communications, News broadcast, All are correct, The telephone was invented in... (3 points), 1881, 1878, 1865, 1876

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