A) Mercury, because it is closest to the Sun B) Venus, because of its dense carbon dioxide atmosphere C) Mars, because of its red color D) Jupiter, because it is so big 2) Which of the following is not a characteristic of the inner planets? Which planet has the highest average surface temperature, and why? The planet with the highest average surface temperature in our solar system is Venus. That honor goes to Venus, the second closest planet to the Sun which also has the highest average surface temperatures – reaching up to 460 °C on a regular basis. Which planet has the highest average surface temperature, and why? Venus, because of its dense carbon dioxide atmosphere The most metal-rich terrestrial planet is Mercury. When compared to the average temperature on Earth, the other planets can clearly be seen to be far outside our understanding of life supporting temperature … The global temperature record represents an average over the entire surface of the planet. d. Jupiter, because it is so big Mars, because of its red color. Which planet has the highest average surface temperature, and why? Neptune has the coldest average temperature in the Solar System. The highest temperatures of all the planets are found on Venus; Venus' average temperature is 449 C! The planet's average surface temperature has risen about 2.05 degrees Fahrenheit (1.14 degrees Celsius) since the late 19th century, a change driven largely by increased carbon dioxide and other human-made emissions into the atmosphere. 4 Most of the warming occurred in the past 40 years, with the six warmest years … A) Mars, because of its red color B) Mercury, because of its dense carbon dioxide atmosphere C) Venus, because of its dense carbon dioxide atmosphere Which planet has the highest average surface temperature, and why?-Venus, because of its dense carbon dioxide atmosphere The most metal-rich terrestrial planet is-Mercury Which planet, other than Earth, has visible water ice on it?-Mars Pluto is different from the outer planets in all of the following ways except which one?-Its surface temperature … Which planet has the highest average surface temperature and which has the lowest? Despite being coldest to the sun, Mercury is actually cooler than Venus due to its slow rotation and thin atmosphere. The rocky, inner planets of our solar system vary in sizes, atmospheres, and temperatures. The temperatures we experience locally and in short periods can fluctuate significantly due to predictable cyclical events (night and day, summer and winter) and hard-to-predict wind and precipitation patterns. asked Sep 24, 2016 in Physics & Space Science by Irisado. Venus is the hottest planet, with average surface temperatures of 460°C (860°F). 1) Which planet has the highest average surface temperature, and why? How hot is the surface of Venus's? Which planet, other than Earth, has visible water ice on it? b. Venus, because of its dense carbon dioxide atmosphere. That thick atmosphere traps heat from the sun like a blanket, letting it in but not letting it out. Mars Pluto is different from the outer planets in all of the following ways except which one? 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