[ 73 ] Earth and Space Science GED ® TEST SCIENCE FLASH REVIEW • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Solar energy technology is catching up. Which of the following statements about this is NOT accurate? A. Solar plants are now being constructed in many areas in the United States and throughout the world. B. Solar plants are being constructed in large floating barges on the oceans. C. In 2012, about 0.14% of all electricity generation was from solar power. This may seem like a small percentage of overall energy production, but it represents a 58% increase over 2011. D. Many people are finding employment in the solar industry. In 2012, there were more than 119,000 solar workers in the United States, a 13.2% increase over employment totals in 2011. Wind power refers to the conversion of wind energy into a usable form of energy. Which of the following is NOT true? A. Large wind farms consist of hundreds of individual wind turbines, which are connected to the electric power grid. There are wind farms on land and in oceans. B. Some countries are far ahead of the United States in harnessing wind power for energy. Denmark generates more than a quarter of its electricity from wind. C. Tilting a windmill has become a regular practice for wind energy conversion. D. In 2010, wind energy production was more than 2.5% of total worldwide electricity usage. The cost per unit of energy produced is similar to the cost of new coal and natural gas installations.