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General Knowledge Class 8 - Science And-Technology Notes

Comprehensive study notes for Class 8 - Science And-Technology olympiad preparation

Science and Technology

Welcome to the chapter on Science and Technology for Class 8. In this chapter, you will learn about important scientific discoveries, new technologies, and how science and technology are changing our world. By the end of this chapter, you will be able to discuss recent advances and their impact on our lives!

Introduction

Science helps us understand the world around us. Technology uses science to create tools and machines that make life easier. Together, science and technology shape our future.

Recent Scientific Discoveries

  • New medicines and vaccines to fight diseases.
  • Discoveries in space, like new planets and black holes.
  • Advances in genetics and DNA research.

Latest Technologies

  • Smartphones and tablets for communication.
  • Artificial Intelligence (AI) and robots in factories and homes.
  • Electric cars and renewable energy sources.
  • 3D printing for making objects quickly.

Impact on Daily Life

  • Online learning and digital classrooms.
  • Medical technology for better health care.
  • Smart homes with automated devices.
  • Social media for sharing news and ideas.

India in Science and Technology

  • ISRO’s space missions, like Chandrayaan and Mangalyaan.
  • Development of COVID-19 vaccines.
  • Growth of IT industry and startups.

Fun Activity: Tech News Scrapbook

Collect news articles about new inventions or discoveries. Make a scrapbook and share it with your class!

Summary

  • Science and technology are changing our world.
  • New discoveries and inventions help us live better lives.
  • India is making progress in space, medicine, and IT.

Practice Questions

  1. Name one recent scientific discovery.
  2. What is Artificial Intelligence?
  3. How do electric cars help the environment?
  4. Mention one achievement of ISRO.
  5. How has technology changed learning?

Challenge Yourself

  • Research and write about a new invention from the last year.
  • List three ways technology helps in healthcare.

Did You Know?

  • The first computer was as big as a room!
  • India launched its first satellite, Aryabhata, in 1975.

Glossary

  • Technology: Tools and machines made using science.
  • Artificial Intelligence (AI): Computers that can think and learn.
  • ISRO: Indian Space Research Organisation.
  • Renewable Energy: Energy from sources like sun and wind.

Answers to Practice Questions

  1. COVID-19 vaccine discovery.
  2. AI is technology that lets computers think and learn.
  3. They do not pollute the air and use clean energy.
  4. Chandrayaan mission to the moon.
  5. Online classes and digital books.

Stay curious about science and technology—they shape your future!

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