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According to the Department of Energy, in how many years will U.S. energy consumption increase 45 percent for electricity, 62 percent for natural gas and 33 percent for oil?

According to the Department of Energy, in 20 years the U.S. energy consumption increase 45 percent for electricity, 62 percent for natural gas and 33 percent for oil. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

What percent of all the energy used in the United States is "consumed" by residential windows?

2 percent of all energy used in the United States is "consumed" by residential windows. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

How much flat glass is produced worldwide each year?

20 billion square feet of flat gas is produced worldwide each year. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

Research Frontiers has developed a type of window that uses small light-absorbing microscopic particles known as what?

Research Frontiers has developed a type of window that uses small light-absorbing microscopic particles known as suspended particle devices. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

How many SPD smart windows can you power with less electricity than it takes to operate a simple night-light?

You can power 15 SPD smart windows with less electricity than it takes to operate a simple night-light. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

Which smart windows lack the intermediate settings between clear and translucent?

PDLC smart windows lack the intermediate settings between clean and translucent. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

What term describes materials that can change color when energized by an electrical current?

Electrochromic is a term used to describe materials that can change color when energized by an electric current. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

What is the chemical reaction in which molecules in a compound lose an electron?

Oxidation reaction is the chemical reaction in which molecules in a compound lose an electron. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

According to Sage Electronics, you can run a house full of electrochromic windows for about the same amount of money that it takes to power what?

According to Sage Electronics, you can run a house full of electrochromic windows for about the same amount of money that it takes to power a single 75-watt light bulb. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

What must be present in order for any smart window to be activated?

An electrical current must be present in order for any smart window to be activated. <a href="http://home.howstuffworks.com/home-improvement/energy-efficiency/smart-window.htm">How Smart Windows Work</a>

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About This Quiz

What's so smart about these windows? For one thing, they know the importance of saving energy. What else makes them smarter than your average window?

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