SCIENCE
EARTH SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Because there is oxygen in the soil
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The soil is made out of red silicon dioxide
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It has iron composition in its soil
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Oxygen and iron combines to make rust in the soil
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Detailed explanation-1: -Wind eroded these surface rocks and soil, and ancient volcanos blew out the iron, spreading it all over the planet. When this happened, the iron within the dust reacted with oxygen, producing a red rust color. So, Mars is red because it has a layer of rusty dust covering its entire surface!
Detailed explanation-2: -’ So where does that redness come from? 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.
Detailed explanation-3: -But why is Mars red, anyway? The simple explanation for the Red Planet’s color is that its regolith, or surface material, contains lots of iron oxide-the same compound that gives blood and rust their hue.
Detailed explanation-4: -Mars regolith is mostly silicon dioxide and ferric oxide, with a fair amount of aluminum oxide, calcium oxide, and sulfur oxide.
Detailed explanation-5: -Ferric oxides (an oxide of iron) are present everywhere on the planet: within the bulk crust, lava outflows and the dust oxidised by chemical reactions with the martian atmosphere. Mars’ atmosphere contains both carbon dioxide and water, both of which provide a source of oxygen to react with the iron in the surface.