When we say that liquid water is unstable on Mars we mean that?
Terms in this set (44) What do we mean when we say liquid water is unstable on Mars? Any liquid water on the surface would quickly freeze or evaporate.
Why is there no liquid water on the surface of Mars today quizlet?
It is highly unlikely that liquid water exists today on the surface of Mars, due to the cold temperatures and low atmospheric pressure. Liquid water may exist temporarily, but freezes or evaporates quickly. Mars must have had a thicker atmosphere and a higher temperature in the past.
What do we mean when we say liquid water is unstable on Mars quizlet?
When we say that liquid water is unstable on Mars, we mean that. any liquid water on the surface would quickly either freeze or evaporate.
What is the evidence that Mars once had liquid water quizlet?
Mars shows rivers, canyons, and teardrop-shaped erosions around craters, indicating that water was flowing and eroding the surface. Mars is too cold to have significant amounts of liquid water on its surface today.
Why do we think Mercury has so many tremendous cliffs?
14)Why do we think Mercury has so many tremendous cliffs? They were probably formed by tectonic stresses when the entire planet shrank as its core cooled.
What must be true if Mars was warmer and wetter in the past Group of answer choices?
What must be true if Mars was warmer and wetter in the past? Mars once had a much thicker atmosphere than it does today.
Where did the water on Mars go?
It’s a complex system.” In March 2021, researchers reported that the considerable amount of water on ancient Mars remains on Mars but, for the most part, has likely been sequestered into the rocks and crust of the planet over the years.
Why is IO geologically active?
With over 400 active volcanoes, Io is the most geologically active object in the Solar System. This extreme geologic activity is the result of tidal heating from friction generated within Io’s interior as it is pulled between Jupiter and the other Galilean moons—Europa, Ganymede and Callisto.
Where is most of the water on Mars?
While almost all of Earth’s water moves around in oceans, rivers and lakes, most of the water on Mars is frozen deep below the surface, within polar ice caps and in permafrost.
Why did Mars lose its magnetic field quizlet?
-Change must have occurred due to loss of atmospheric gas, which weakened the greenhouse effect. -Some gas was probably blasted away by impacts, but more probably was stripped away by the solar wind as Mars cooled and lost its magnetic field and protective magnetosphere.
What is the main reason the southern hemisphere of Mars experiences more extreme seasons quizlet?
What is the main reason the southern hemisphere of Mars experiences more extreme seasons? The eccentricity of Mars’ orbit. Why are the polar caps larger during the Martian winter? Carbon dioxide in the atmosphere condenses into dry ice on the poles.
What is the main reason mountaintops are so cold quizlet?
What is the main reason mountaintops are so cold? Mountaintops are above much of the greenhouse gas in the atmosphere. Why isn’t Earth’s atmosphere mostly hydrogen? Light gases such as hydrogen move faster than heavier gases and escape from Earth’s gravitational field.
What happened to the water on Mars quizlet?
Where did all the water on Mars go? What happened once the ice (located just below the surface) was exposed? Although some water was probably lost to space, much is still present as ice, locked in the polar ice caps or frozen underground. Once ice was exposed, it vaporized and disappeared.
What makes astronomers believe Mars once had rivers and running water?
What makes many astronomers believe that Mars once had rivers and running water? Astronomers believe that Mars formed with a much thicker atmosphere than it has today. Where did this atmosphere go? Recently astronomers have found new evidence for water on Mars using the orbiting Mars Global Surveyor spacecraft.
Why is Mars red?
Well, a lot of rocks on Mars are full of iron, and when they’re exposed to the great outdoors, they ‘oxidize’ and turn reddish – the same way an old bike left out in the yard gets all rusty. When rusty dust from those rocks gets kicked up in the atmosphere, it makes the martian sky look pink.