on October 2, 2022
If we could green the Sahara, would it be able to sustain itself?
Earth scienceAsked by: Erin Colon What would happen if the Sahara was green? Stager’s research suggests that as the Sahara turns green, it could trigger a warming trend out to sea in the Atlantic Ocean that would make our weather here in the eastern US far more volatile. “When you green the Sahara, there’s less dust,
on October 2, 2022
Carbon dioxide on Mars, Venus and Earth
Earth scienceAsked by: Carlos Feliciano Earth’s atmosphere is 0.038% carbon dioxide. Mars’s atmosphere is 95.3% carbon dioxide. Venus’s atmosphere is 96.5% carbon dioxide. Does Venus Earth and Mars have carbon dioxide? Both worlds’ atmospheres are almost pure carbon dioxide. Venus is 96% carbon dioxide (CO2) which led a once Earthlike planet to a very high surface
on October 2, 2022
If I could drill a hole into the mantle, would it form a volcano?
Earth scienceAsked by: Carlos Feliciano Drilling into the center of the Earth would have no effect on volcanos, which do not have a direct conduit to the molten core, as his diagram falsely suggested. Volcanic material comes from reservoirs no deeper than 30 miles underground. The core begins about 1,800 miles beneath the surface. Is it
on October 2, 2022
Are there books or on-line resources about graphic design for geology?
Earth scienceAsked by: Bradley Willis What are 3 things geologists study? Geologists study the materials, processes, products, physical nature, and history of the Earth. What technology do geologists use? Geologists use a variety of tools depending on the situation, but some of the most commonly used tools include Hand Lens, Rock Hammers, compasses, and field books.
on October 2, 2022
Earthquake probabilities
Earth scienceAsked by: Bradley Willis Within the next 30 years the probability is: 60% that an earthquake measuring magnitudemagnitudeMagnitude is expressed in whole numbers and decimal fractions. For example, a magnitude 5.3 is a moderate earthquake, and a 6.3 is a strong earthquake. Because of the logarithmic basis of the scale, each whole number increase in
on October 2, 2022
LWC and Absolute Humidity
Earth scienceAsked by: Ashley Benavides What is the difference between humidity and absolute humidity? Or to put it simply, relative humidity indicates the actual water content of air as a percentage of the maximum amount it could possibly hold. The term absolute humidity is less common: it describes the actual amount of water vapour in the
on October 2, 2022
When is the next glaciation due?
Earth scienceAsked by: Ashley Benavides Predicted changes in orbital forcing suggest that the next glacial period would begin at least 50,000 years from now. Moreover, anthropogenic forcing from increased greenhouse gases is estimated to potentially outweigh the orbital forcing of the Milankovitch cycles for hundreds of thousands of years. What is the next glacial period? Next
on October 2, 2022
How is phosphorus getting into lakes and rivers?
Earth scienceAsked by: Jenny Foster Because phosphorus usually clings to soil particles, the main way in which phosphorus gets into water is when soil is washed in and becomes sediment. Excess phosphorus causes excessive growth of plants in waterways, lakes and estuaries leading to eutrophication. How does phosphorus get into a river? Phosphorus moves through the
on October 2, 2022
Would the Earth function the same spinning the other way?
Earth scienceAsked by: Jenny Foster An Earth spinning in the opposite direction would have very different atmospheric and ocean currents. Although the global mean temperature would remain almost the same, the major ocean currents would switch from the Atlantic to the Pacific, changing the planet’s climate drastically. What will happen if the Earth starts rotating in
on October 2, 2022
How would one get a submarine to rise?
Earth scienceAsked by: Mike Burrell How do submarines rise to the surface? In order to control buoyancy, the submarine relies on special tanks that can be filled with water or air. To return to the surface, the tanks are filled with air. This makes the submarine less dense than the water around it, causing the sub