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19 Cards in this Set

  • Front
  • Back
Radius of Earth's crust
5-50 km
Radius of Earth's mantle
2900 km
Radius of Earth's outer core
2200 km
Radius of Earth's inner core
1300 km
Which part of the Earth's interior is liquid?
Outer core
Silicon composes what percent of Earth's elements? What about just the crust?
15%, 28%
Oxygen composes what percent of Earth's elements? Crust only?
30%, 48%
What is the most abundant element in Earth?
Iron- 35%
What element is the basis for solar system abundance charts
Silicon (10^6)
Name six elements who's abundance in the Solar System are higher than one would expect
He,O,Si,Fe,Ni,Ba
Name one element which has a relatively low abundance in the solar system
Beryllium
The oceanic crust only compromises last ___% of Earth's history
5%
What are the ages of the oldest minerals and where were they found?
4.2 billion years, Australia
How were measurements of gravity made at locations on Earth
using satellites/topography
When did the hypothesized great Flood occur?
about 7600 years ago (C14 dating)
Black sea is known for having low amounts of what element
oxygen
What topographical evidence was found that gave rise to the flood hypothesis
buried channels, submerged dunes, wave cut terraces
What formed when the sea level rose?
Bosporus, or gorge..creating a waterfall w/ displaced water that gave rise to Black Sea + ensuing flood
What were found on the edges of Black Sea to support their hypothesis?
evidence of human artifacts/villages