728 Answered Questions for the topic physical science
Are volcanoes formed from earthquakes?
I know that some earthquakes are caused by volcanoes and that some earthquakes can trigger volcanic eruptions close to where the earthquake is. But what if a great earthquake(8.0 or above) occurs... more
Is it possible to determine where gold might be found based on a map, and if so, how?
Is it possible to locate potential gold deposits using maps that describe dominant rock type, altitude, vegetation, or geological formations? (I realize that the location would probably still have... more
Using acoustics to measure the composition, density, and hardness of layers?
I am an engineering student at Alfred University and some fellow classmates and I are doing a competition, but one of the tasks we need to complete is autonomously measuring the composition,... more
What can one come to know about a mineral just by knowing name?
I have been busy learning the components of various minerals for upcoming test....is there any way to predict the components or properties of a mineral just by knowing it's name? Eg: albite,augite,... more
What does the notation "kg kg-1" for units mean for specific humidity?
I am using a data set from Justin Sheffield at Princeton that includes specific humidity. The description is as follows: >"Reanalysis 6-hourly specific humidity interpolated to 1.0deg with... more
Importance of meteorite impact craters in geology?
What is the economic importance of large meteorite impact craters with a diameter over 100 m? Can they form diamonds or produce other economic deposits?
Is it ever possible for an continental plate to subduct under an oceanic plate?
It is well known that oceanic plates subduct under continental plates. This may be attributed to the plate's age and density, plus the water on top of it. So I was wondering if it is ever possible... more
What processes cause basalt to form a columnar structure?
I have run across many pictures of rocks that look like almost perfectly carved columns. For example: the Twyfelfontein Organ Pipes, the Basaltic Prisms of Santa Maria Regla, and the waterfall... more
Is Desert Sandstone a chemical sedimentary rock?
I gather that chemical sedimentary rocks are formed when minerals in solution are supersaturated and therefore they precipitate out. I also understand that desert sandstone is formed as Iron Oxide... more
What is the Pleniglacial age?
I'm sorry if this is a stupid question. I was wondering if someone could briefly explain what the Pleniglacial age is and how it fits in with [the geologic time... more
Why is the Mediterranean sea water so salty?
What is a "show" in petroleum geology?
Is a *show* when naturally ocurring oil seeps out of a fracture on the surface? Or is it when engineers fracture rocks in order to extract oil?
What is the best way to mount white mica separates?
I have detrital mica separates that I would like to mount in EpoThin resin for microprobe analysis and I would simply like to know the best method for mounting them. With zircons you can mount on... more
Why do some earthquakes and volcanoes occur within plates?
I know that volcanoes and earthquakes occur on plate margins. But, do some of them also occur within plates?
What factors explain mountain glacier retreat variability?
It is well known that the majority of the world's mountain glaciers are retreating, but looking at a few LANDSAT images from the 1980s and today I am able to see glaciers that have retreated... more
Volcanoes in the Alps and Himalayas and the subduction of Tethys Sea?
Geologist have theorized that the Tethys Sea subducted under Eurasian plates. But where are the volcanoes that would have resulted due to this? Where are the volcanoes in the Alps and the Himalayas?
What would the geology and climate of a supposed landmass near the pole be like, assuming a thoroughly warmer planet?
I am designing a fantasy setting for pen-and-paper role-playing (and potential novel) purposes. I have decided that a continent be situated right on a Pole of some imaginary planet with axial tilt... more
I need help with creating a sensible response to the question below.
Part 1, My Hypothesis: Based on scientific study, we can asume that the universe is full of life foms in one state or another. The question is, how similar are these forms to you and me? Is the... more
Volcanoes in the Great Barrier Reef?
Was there ever at any point in time a volcano in the great barrier reef? I thought atolls develop from volcanic islands, and the coral grow around them.
Water on Mars and Earth?
If water on Earth came from meteorites, why doesn't Mars have substantial water? What made it more highly probable on Earth than on Mars?
How to solve using the Ideal Gas Law
As the result of a chemical reaction, 19.8 g of CO2 gas is produced. Using the ideal gas law, determine the volimn of gas produced when the pressure is 1.00 atmosphere and the temperature is 33.0^C.
What controls the acidity of the ocean?
I have learned that: * coral reefs are made up mostly of calcium carbonate * coral reefs are mainly distributed in the tropical zone * The calcium carbonate will be decomposed in the reaction... more
What structures form due to the melting of subducting plates?
What structures form from the melting of subducting plates? Plutons, Accretionary wedges, Deep sea trenches, Faults?