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Notes on video lecture:
Examining the Agpalilik Meteorite
Choose from these words to fill the blanks below:
liquid, 300, Moon, Greenland, kilometers, crystallized, earth, gravity, slowly, salt, impossible, 600, crystal, meteorite, million, pattern, Buchwald, crystal, iron, cooled, heavier, coming, elongated, inclusions, troilite, metal, 550
the largest                    slice in the world
       kilo slab
found in 1963 in northern                   
found by Vagn                 
wrote a 2,500 page book describing every          meteorite known on the planet
has a                structure
formed from when the iron core of the asteroid from which this meteorite came                          4.5 billion years ago
you can see how slowly the core             
30 degrees per one                years
therefore it's                      to duplicate this material, you can't make fake iron meteorites
we don't have the time to cool something so             
the meteorite is uniformly a               
you see the same crystal                all across the surface
theoretically, uniform crystals of this kind could be                      wide
elongated, dark                     
this is                 , an iron sulfide mineral
can be found as a native mineral on Earth, but is more abundant in meteorites, in particular those originating from the          and Mars
they could not fit into the            structure
it is similar to when you freeze          water, the salt will concentrate in the remaining              which will get more and more salty and you will have to cool it at lower temperatures to make this remaining salt water freeze
so the                    features are the last portion of the melt that remained
there are little crystals in the troilite areas which were a little                than the liquid
this 10-kilometer-in-diameter asteroid had its own                field, of course pointed toward its center, this meteorite was just a fragment of it
the astroid that this meteorite came from collided with another asteroid some        million years ago
the fragments from the collision are still raining down on the           
it's the most common type of iron meteorite we have today
we have        pieces of the collision which have hit the earth within the last few thousand years and they keep             

Spelling Corrections:


Ideas and Concepts:

On the uniqueness of iron meteorites, via tonight's Origin of the Universe class: "The crystal structure of this meteorite formed from when the iron core of the asteroid from which it came began crystallizing 4.5 billion years ago. You can see how slowly the core cooled, 30 degrees per one million years. It's impossible to duplicate this material, you wouldn't have the time. You can't fake an iron meteorite."
Examining the Agpalilik Meteorite
Nuclear Synthesis: The Origins of Elements in Our Solar System
The Origin of Solar Systems