We all know that we have different personality traits that make us unique human beings. Some of us seem to prefer order and predictability. We feel comfortable when we work on a schedule. A good day is when we can check everything off our to do list. While others of us are more spontaneous and become bored when things are too predictable.
Venus has over 150 large shield volcanoes. These shields are mostly between 100 and 600 km across, with heights between about 0.3 and 5.0 km. The largest shields, however, are over 700 km in diameter and up to 5.5 km in height.
The giant shield volcanoes on Mars are much larger than any feature on Earth. Shown here is a graphic comparison of Olympus Mons to the two largest mountains on Earth. (Note: Mount Everest is not a volcano.) Olympus Mons is the largest and youngest volcano on Mars. It is nearly 27 km high, and about 700 km across. Its summit is nearly 72 km wide, which is close to the size of Mount Everest and Mauna Kea. Mauna Kea is the largest Earth volcano.