on October 3, 2022
Are there any geological periods found on top of each other that have dinosaurs of that period with in them?
Earth scienceAsked by: Rodney Randall What part of geologic time is represented by dinosaurs? The ‘Age of Dinosaurs’ (the Mesozoic Era) included three consecutive geologic time periods (the Triassic, Jurassic, and Cretaceous Periods). Different dinosaur species lived during each of these three periods. What periods and eras have dinosaur fossils? Dinosaurs appeared and disappeared during the
on October 3, 2022
What would the average temperature be if there were no greenhouse effect from water vapor?
Earth scienceAsked by: Rodney Randall This process, the greenhouse effect, leads to a mean surface temperature that is 33 °C greater than it would be in its absence. If it were not for the greenhouse gas effect, Earth’s average temperature would be a chilly -18 °C. What would the temperature be without the greenhouse effect? ‘Greenhouse
on October 3, 2022
How do the Andes get so high?
Earth scienceAsked by: Andrea Alvarez Can you live in the Andes? Scarce oxygen, cold temperatures, and intense ultraviolet radiation make the Andes a tough place to live. How did humans adapt to such heights? A new study of ancient and modern DNA suggests in some South American highlanders, the answer includes changes to their heart muscles.
on October 3, 2022
Why do clouds sometimes form in “plumes”?
Earth scienceAsked by: Andrea Alvarez Why do clouds form around the sun? Heated by sunshine, the ground heats the air just above it. That warmed air starts to rise because, when warm, it is lighter and less dense than the air around it. As it rises, its pressure and temperature drop causing water vapor to condense.
on October 3, 2022
How to strong winds cause baroclinic intensification in the upper ocean?
Earth scienceAsked by: Mark Odom What is a baroclinic process? Introduction. Baroclinic instability refers to a process by which perturbations draw energy from the mean flow potential energy. The conversions of energy are proportional to perturbation heat fluxes in both horizontal and vertical directions. What is Baroclinic atmosphere? An atmospheric state in which density depends upon
on October 3, 2022
Modified blackbody model of earth. What is wrong with it?
Earth scienceAsked by: Mark Odom Does it seem reasonable that the earth’s atmosphere will allow the blackbody radiation to pass? NO. It is a result of warming of the Earth’s surface by the absorption and re-emission of IR radiation by molecules in the atmosphere. Is the Earth’s atmosphere a blackbody? The Earth’s atmosphere cannot be treated
on October 3, 2022
What models are available to estimate effect of surface water on groundwater quality?
Earth scienceAsked by: Willie Russell What is surface water modeling? Surface water models are used to simulate surface water conditions and to assess surface water availability. How do models contribute to water quality management? Modeling can be used to assess (predict) future water quality situations resulting from different management strategies. For example, assessing the improvement in
on October 3, 2022
What is a typical value of the Péclet number for internal waves?
Earth scienceAsked by: Joshua Starboard What are internal waves in the ocean? Internal waves are the undersea equivalent of surface waves you see at the beach. They have a vital role in transferring heat, energy, and momentum in the ocean. The turbulence they create when they break helps move nutrient-laden water to the coastlines while moving
on October 3, 2022
Why does the annual temperature range get bigger where latitude is higher?
Earth scienceAsked by: Joshua Starboard Why are there larger annual temperature changes at higher latitudes? At higher latitudes, the angle of solar radiation is smaller, causing energy to be spread over a larger area of the surface and cooler temperatures. How does latitude affect annual temperature range? There is a relationship between latitude and temperature around
on October 3, 2022
How can I tell if a rock is really petrified wood?
Earth scienceAsked by: Brent Bakos Keep an eye out for little bits of sap or sap-like colors like red (often strong reds), orange, and tan around the smooth parts. Smooth sections are often 3 to 5 inches (7.6 to 12.7 cm) in length. If the specimen has no bark but looks and feels like wood, it’s