Comparing Earth And Venus

Kelsey Irwin

Mr. Corso

Astronomy period 5

16 January 2018

Venus

The Earth and Venus only have a difference in diameter of six hundred thirty eight kilometer. Venus has eighty one and a half percent of the Earth’s mass. Both Earth and Venus also have a central iron core, a molten rocky mantle and a silicate crust (Venus Facts - Interesting Facts about Planet Venus). “Venus is such a special planet because it is known as Earth’s twin. They both share a similar planet size, they both have a surface composition, and they both have an atmosphere with a complex weather system” (Venus compared with the Earth 1).

Venus's has a diameter of twelve thousand one hundred and four kilometers. Earth has an both an equatorial and polar diameter. Earth’s equatorial

These temperatures of Venus is very fiery due to an effect called the uncontrolled greenhouse effect. The uncontrolled greenhouse effect more than doubles the temperature on the Venus's surface. Venus’s surface temperature goes from eight hundred twenty degrees to almost nine hundred degrees fahrenheit. The average surface temperature of Venus being eight hundred degrees fahrenheit. Venus is so hot it can melt lead. Because of Venus’s hot temperatures any water on Venus would evaporate nearly any second. “ However research from NASA's Ames Research Center suggests that liquid water in the oceans and seas were prevalent on Venus for hundreds of millions of years in earlier times. Due to Venus' immense pressure water could have existed with temperatures as warm as two hundred degrees fahrenheit to three hundred degrees fahrenheit. But, that is still likely too hot to have sustained any primitive life forms” (US Department of Commerce, NOAA, National Weather Service 3). As Venus is still continued to be warm any liquid water on it is boiled off into the atmosphere of Venus. The Pioneer Spacecraft in December nineteen seventy eight said there were winds in Venus's atmosphere. The winds reached speeds of two hundred miles per hour and along with the thick cloud cover explain why at night the planet has temperatures almost nearly the same as the day side. Strong winds transfer heat around the globe. However, it appears that the surface winds are very light. This means

Earth has a mantle too, which is made up of rock containing silicon, iron, magnesium, aluminum, oxygen and other minerals. It also, has a crust made up of mostly oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium. Earth’s atmosphere is mainly made up of nitrogen and oxygen with smaller amounts of carbon dioxide, water vapor and other gases. Venus has a core made up of iron. It also, has a mantle that is rocky. Venus has an atmosphere that is mainly made up of ninety six percent of carbon dioxide and three percent nitrogen with small amounts of other gases. Venus’s atmosphere is ninety times more dense than that on Earth’s. They are both similar because they both have a core that is made of iron. They both have a mantle that is rocky. Both of their atmosphere is made up of nitrogen, and other gases (Ask an Astronomer). But, they are different because Earth is made of nickel. Earth’s atmosphere is also, made up with oxygen and other amounts of carbon dioxide. Earth is also, made of water vapor on top of nitrogen and other gases. Venus also, has a pressure ninety two times higher than the earth. Earth’s pressure is one bar and Venus’s has ninety three bars. “A bar is a unit of pressure defined as a hundred kilopascals. It is about equal to the atmospheric pressure on Earth at sea level” (Units of Measurement Wiki). Venus also, has dense clouds made up of sulfuric acid. The clouds are so thick it is