Education. If you want to become an optometrist, you'll need about eight years of education. Depending on how fast you work, you might be able to graduate sooner if you take on additional credit hours or complete coursework during the summer.
Although the results for the Earthâs temperature are usually given as anomalies, climate scientists have used the measured temperature data to calculate average temperatures. NOAAâs result for the 20th century average land-ocean Earth surface temperature is 13.9 Â°C. The 2011 NOAA surface temperature anomaly of 0.51 Â°C, gives an average Earth temperature of 14.4 Â°C for 2011. To find out more about how the Earth is warmed and the greenhouse gases that are responsible, see How Atmospheric Warming Works and Greenhouse Gases.
Temperature Extremes. Earth's surface temperature depends on how much energy it receives from the sun. The equator, which is in direct sunlight all year, tends to be the hottest place, but the highest air temperature ever recorded was at Death Valley, California, in 1913.It was 56.7 degrees Celsius (134 degree Fahrenheit).ts average surface temperature is following a warming trend. In 2013, Earth's average temperature was 14.6 degrees Celsius (58.3 degrees Fahrenheit), according to NASA.