The Sun and stars are made almost entirely of hydrogen and helium, but we have measured radii of these stars out to their surfaces. What is the name of the layer of a star that we designate as the surface, what makes that layer unique, and how do we define that as a surface if it isn't made of hard rocky material like Earth?

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Q: My question is which rocks that found in Wisconsin are are equivalent (formed during the Sam…

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A: The states of North Carolina has depicted this climate.

Q: Experiment 5 Cross sections Refer to the geological map supplied on the last page of this Lab. 1.…

A: A cross-section of a geological body represents important information. In a single section, there…

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A: The most important factor driving the metamorphism is the intense chemical and mechanical process…

Q: distinguish between unidirectional and cyclic changes andbetween gradual and catastrophic changes,…

A: a) Unidirectional changes refer to changes which continues mostly in the same single direction…

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A: The above diagram shows elongated oval-shaped hill-like structures that are deposited under the…

Q: Although about 70% of earth’s surface is covered in water, about how much of that water is…

A: Earth's surface is covered with around 70% of water out of which 97% of water is present in seas and…

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A: The primary aim of NASA's discovery program is to discover planets around other stars from outside…

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Q: How will changes in air pressure and sea surface temperature associated with El Nino potentially…

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Q: The following image shows how caves develop in a a. valley and ridge province. karst landscape. С.…

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A: Once our solar system was a massive dense cloud and from that massive dense cloud, materials are…

Q: What is radiometric dating and how is it used to obtain geologic ages?

A: Radioactivity is a natural phenomenon whereby an unstable nuclei splits into stable nuclei to…

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Q: describe how glacial ice forms and flows, and how to categorizevarious kinds of glaciers.

A: Glaciers are the moving sheet of ice. They are formed from the snow. When snow falls, they…

Q: What processes control the rise and fall of sea level on theEarth?

A: Transgression:  The movement of coastline toward land because of relative upward push in the sea…