on October 2, 2022
Does vegetation contribute to long-term carbon sequestration?
Earth scienceAsked by: Peggy Dunbar So yes, vegetation can contribute to long-term carbon sequestration, although primarily by mechanisms other than the river transport and ocean deposition you proposed. Show activity on this post. Plant matter decomposes, partly it is digested aerobically (releasing CO2 again) but partly it forms humic acids. What factors influence carbon sequestration? Uptake
on October 2, 2022
If the distance between Earth and the moon were changed, would the effects be immediate?
Earth scienceAsked by: Peggy Dunbar What would happen if you decrease the distance between the Earth and the Moon slightly? If the satellite were slightly closer, the tidal bulge would grow. Low tides would be lower and high tides would be higher and any low lying coastline would be flooded. If the Moon got much closer,
on October 2, 2022
Does a table summarizing basic details of significant operational weather models exist?
Earth scienceAsked by: Danielle Cottle What is an operational weather model? Operational forecasting involves generating weather forecasts that people use to make decisions, from the daily choice of whether or not to carry an umbrella to life-or-death decisions about whether to issue evacuation orders. How accurate are weather forecast models? The Short Answer: A seven-day forecast
on October 2, 2022
Websites providing visual weather data
Earth scienceAsked by: Danielle Cottle What website shows weather accurately? AccuWeather is Most Accurate Source of Weather Forecasts and Warnings in the World, Recognized in New Proof of Performance Results. Where can I collect weather data? They include weather balloons, satellites, and radar (Figure below). Weather stations collect data on land and sea. Weather balloons, satellites,
on October 2, 2022
Why isn’t the Amazon River in the top for the highest hydropower potential
Earth scienceAsked by: Jami Olson Is the Amazon river used for hydroelectricity? Hydropower is the dominant source of energy in the Amazon region, the world’s largest river basin and a hotspot for future hydropower development. However, a new study warns that in the coming decades, climate change-driven reductions in precipitation and river discharge will diminish the
on October 2, 2022
What temperature do small meteorites have on impact
Earth scienceAsked by: Theresa Miller How hot is a meteorite impact? Entry into the atmosphere When they plow through the atmosphere, meteors are heated to more than 3000 degrees Fahrenheit, and they glow. Meteors are not heated by friction, as is commonly thought. A phenomenon called ram pressure is at work. A meteor compresses air in
on October 2, 2022
Why are South African mountains short and flat?
Earth scienceAsked by: Theresa Miller These are a product of the glacial and geological history of the region. The flat hills are capped by hard, resistant dolerite. This is solidified lava that was forced between the horizontal strata of the sedimentary rocks (which make up most of the Karoos geology) through high pressure. Why are mountains
on October 2, 2022
Why does the Inter tropical Convergence Zone shift?
Earth scienceAsked by: Vanessa Martel The shifting of ITCZ is the result of the Earth’s rotation, axis inclination and the translation of Earth around the Sun. Seasons are the result of this. ITCZ moves toward the hemisphere with most heat, wich are either hemisphere summers. Why are the tropics shifting? Earth’s tropics are expanding poleward and
on October 2, 2022
Has there ever been a case where we have found what appears to be a prehistoric fossil but have no way of dating it?
Earth scienceAsked by: Vanessa Martel What is fossil dating? To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to
on October 2, 2022
Is this a fossil or a mark on the stone
Earth scienceAsked by: Danielle Dunn How do you tell if a stone is a fossil? It is also a good idea to look for signs that the rock contains a fossil before trying to break it, part of a fossil may be visible on the surface of the rock. You can identify the limestone by it’s