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Unit 8 great inventions 2º
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Unit 8 great inventions 2º

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  • 1. Great inventions Science UNIT 8 2nd grade
  • 2. What is a discovery? What is an invention? Finding a use for something that already exist in nature , like oil or tomatoes, is a discovery.Creating something new, like the alphabet or the car , is an invention. Discoveries and inventions help people because they make life easier. Fire Salt Hairdryer Mobile phone Spoon
  • 3. How do inventions happen? An invention happens when someone has a new idea. Later, people improve these inventions and make them more modern.
  • 4. Which inventions use electricity? Every day we use machines and tools that make our lives easier. Many machines use electricity, like the fridge or the radio. Electricity is a form of energy. It was a great discovery.
  • 5. Which inventions and discoveries are important for our health? Some inventions and discoveries are very important because they help to prevent or treat illnesses.
  • 6. Which inventions help us to communicate or to move from place to place ? Many inventions help us to communicate with other people or to move from place to place. Pleople improve these inventions all the time and make them more modern.
  • 7. What can we use a computer for? We can use computers for lots of things we need to do at home, at school and at work. A computer has different parts: C.P.U. Printer Screen Speakers Keyboard Mouse Webcam