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J N C J N C Presentation Transcript

  • Ch.20 Sec. 1 The Impact of Science and Technology By: Joe Lopez Nancy Pineda Carla Aviles
  • Exploring the Solar System and Beyond
  • Cooperation in Space
    • There was much competition between the United States and the Soviet Union in the space race
    • In 1972 years before the Cold War was over the Us and Soviet space programs began to work
    • This goal was achieved on July 17 1975 when both spacecrafts flew 140 miles above earth
    • The Soviets were the first to send an international crew into space named Soyuz 28 which orbited the Earth in 1978 included a Czech cosmonaut.
  • Cooperation in Space
    • US space shuttles included astronauts from Saudi Arabia, France, Germany, Canada, Italy, Japan, Israel, and Mexico.
    • A project sponsored by the US, Russia, and 14 other nations for the building of the International Space Station (ISS).
    • In 1998 U.S. shuttles and Russian spacecrafts transported sections of the ISS to be assembled in space when it is completed it will be the size of a football field.
  •  
  • Exploring the Universe
    • The Soviet Venera spacecraft in the 1970s and the US probe Magellan in 1990 provided in-depth information about Venus
    • On a 12-year journey the U.S. Voyager 2 sent dazzling pictures of Jupiter, Saturn, Uranus, and Neptune back to earth
  • Exploring the Universe
    • Both the US and Soviets showed interest in Mars but only the US sent the probe Pathfinder which landed on Mars in 1997
    • In 1990 the U.S. space agency NASA and European agency ESA worked together to developed and launch the Hubble Space Telescope to sent pictures of orbiting space
  • Expanding Global Communications
  • Smaller, More Powerful Computers
    • Since the 1960s, artificial satellites launched into orbit around Earth have aided worldwide communications
    • With Satellite communication on the world has become a global village
    • In the 1940s, when computers first came into use they took up a huge room they required fans or an elaborate air conditioning system to cool it down
  • Smaller, More Powerful Computers
    • Today a variety of consumer products such as microwave ovens, telephones, keyboard, instruments, and cars used computers and chips
    • Computers have become essential in most offices, and millions of people around the globe have computers in their homes
  •  
  • Communication Networks
    • Starting in the 1990s, businesses and individuals began using internet.
    • The internet is a voluntary linkage of computer networks around the world.
    • It began in the late 1960s as a method of linking scientist so they could exchange information about research.
    • Between 1995 and late 2002 the number of worldwide internet users soared from 26 million to more than 600 million.
  • Communication Networks
    • Internet, along with fax machines, transmits information electronically to remote locations
    • Both paved the way for home offices and telecommuting working at home using computers connected to a business network.
    • Technology has change how people work
  • Transforming Human Life
  • Health and Medicine
    •  
    • Surgeons seldom performed operations on sensitive areas such as the eye or the brain Before World War II 
    • Doctors use CAT scans and MRI techniques, to diagnose injuries, detect tumors, or collect other medical information
    • Technology allowed scientists to isolate and examine individual genes that are responsible for different traits
  • Health and Medicine
    • Through genetic engineering, scientists were able to introduce new genes into an organism to give that organism new traits.
    • Cloning is the creation of identical copies of DNA, the chemical chains of genes that determine heredity.
  •  
  • The Green Revolution
    • Agricultural scientists around the world started a campaign known as the green revolution, In the 1960s, it was an attempt to increase food production worldwide
    • The green revolution helped avert famine and increase crop yields in many parts of the world
    • The green revolution had its negative side, fertilizers and pesticides often contain dangerous chemicals that may cause cancer and pollute the environment
  • The Green Revolution
    • Also, the cost of the chemicals and the equipment to harvest more crops was far too expensive for an average peasant farmer
    • Science and technology have changed the lives of millions of people