<option id="wfwem"></option>

<dd id="wfwem"></dd>
    1. You are using an outdated browser. Please upgrade your browser to improve your experience and security.
      Question: Robots have never been used in battle.
      Answer: Robots are used in many military purposes, including finding and destroying explosive devices. Robot planes are also used to attack enemy positions without exposing human pilots to danger.
      Question: Holograms are made with cameras.
      Answer: Holograms are created with lasers. A single beam of light from a laser is split into two beams by a special mirror. One shines onto a piece of film, the other onto the object to be holographed.
      Question: Holograms are often found on credit cards.
      Answer: Since they are difficult to copy illegally, holograms are commonly found on credit cards, driver’s licenses, and paper money to prove their authenticity.
      Question: It takes very few resources to make a mobile phone.
      Answer: It takes more than 165 pounds (75 kilograms) of material to make a mobile phone. Much of this weight is earth and rock excavated for metal ore.
      Question: Flash memory is most often used in portable devices.
      Answer: Flash memory cards are small, thin, digital storage devices that are often used in digital cameras, phones, and computers to physically transfer data between devices.
      Question: Virtual reality is only used in toys.
      Answer: Flight simulators are perfect examples of using virtual reality, computer-simulated reality, as a working tool.
      Question: Digital cameras use film.
      Answer: Digital cameras and cell phones do not use film. They turn images into electric signals, which they store on microchips. People can load images from a digital camera or a cell phone onto a computer.
      Question: The computer keyboard is an ancient device.
      Answer: The computer keyboard is a modified version of the typewriter. The latter device was patented in 1868, making it a fairly modern innovation.
      White male businessman works a touch screen on a digital tablet. Communication, Computer Monitor, Corporate Business, Digital Display, Liquid-Crystal Display, Touchpad, Wireless Technology, iPad

      Gadgets and Technology: Fact or Fiction?

      ? iStock/Thinkstock
      :{{vm.state.secondsLeft|fixedLength:2}}
      {{(vm.state.currentQuestion + 1)}} of {{vm.questions.length}}
      {{vm.state.score|number:0}}
      Gadgets and Technology: Fact or Fiction?
      You finished!
      Your Score: {{vm.state.numberCorrect}} / {{vm.questions.length}}
      Play Next Quiz See All Quizzes
      :{{vm.state.secondsLeft|fixedLength:2}}
      {{(vm.state.currentQuestion + 1)}} of {{vm.questions.length}}
      {{vm.state.score|number:0}}
      {{vm.state.nextLabel}}
      {{vm.state.numberCorrect}}/{{vm.questions.length}} correct
      {{vm.state.score|number:0}}/{{vm.maxPoints}} points
      Replay
      Your results
      Question {{($index + 1)}}
      Your Answer:
      {{vm.state.responses[$index].isCorrect ? 'Your' : ''}} Correct Answer:
      Are you a quizmaster?
      Compare your score
      Max Score: {{vm.maxPoints}}
      {{vm.state.score|number:0}}
      {{vm.communityAverage|number:0}}
      Your Score
      Community Average
      High scores
      or to track your quiz stats, save your best scores, and compete with the community!
      Get kids back-to-school ready with Expedition: Learn!
      Subscribe Today!
      se94se最新网站