Azzie Rogers
  • Member for 7 years, 9 months
  • Last seen more than a month ago
What geological mechanisms result in the great depth of the Mariana Trench?
Accepted answer
2 votes

As taken from Wikipedia: There are several factors that control the depth of trenches. The most important control is the supply of sediment, which fills the trench so that there is no bathymetric ...

View answer
Propagation of sound after lightning
Accepted answer
7 votes

Since the sound waves propagate not from a single point source but along the length of the lightning's path, the sound origin's varying distances from the observer can generate a rolling or rumbling ...

View answer
Is there a difference between rock and stone?
11 votes

Most sources say that rocks are made of stones. (Or at least that stones are rock fragments.) From the Bing dictionary (definition of stone): hard nonmetallic material: the hard solid ...

View answer
What caused the Younger Dryas cold event?
12 votes

The most accepted theory is that the Younger Dryas was caused by a large reduction or shutdown of the North Atlantic "Conveyor" because of a sudden influx of fresh water from Lake Agassiz and ...

View answer
Why is Earth's inner core made of an iron-nickel alloy?
10 votes

Your guess A is correct. Iron, nickel, and other heavy metals like gold, are what makes up the core of the earth because they are the heaviest of the metals and so sank toward the center of the earth. ...

View answer
How can we determine the size and composition of Earth's inner core?
9 votes

Scientists used the seismic waves created by earthquakes bouncing off the core to map out the approximate size of the earth's inner core. The materials that constituted the core were guessed with the ...

View answer
In what geological situations can I find gold?
10 votes

I've heard that gold ore is often associated with quartz veins. What geological processes enable gold particles to naturally cluster together like this? First of all, gold is mostly found in ...

View answer
Why do crystals, like quartz and diamonds, form in different colors?
Accepted answer
12 votes

The reason minerals like quarts and diamonds vary in color is generally caused by the chemical elements involved while the crystal is being formed. Chemicals Different colors can be created by ...

View answer
What is the cause of the jet streams?
5 votes

Jet streams are caused by a combination of a planet's rotation on its axis and atmospheric heating. These form air masses near each other of different temperatures, which cause jet streams. Also, a ...

View answer