Worksheets10 question quiz: evolution of earth's atmosphere
Total questions: 10
Worksheet time: 5mins
How old is earth estimated to be?
4.5 million years
1 year old
4.5 billion years
8.5 billion years
What is the Principle of Superposition?
uses the known half-life of radioactive isotopes present in objects to determine their age
in undisturbed strata, the younger layers are closer to the surface and the older layers are deeper.
the time it takes for half of the original number of radioactive atoms to decay into a different element
Dissolved iron reacted with oxygen, produced through photosynthesis by cyanobacteria, to form iron oxides.
What is Relative Dating?
determines age or date of the formation of an object.
tells scientists if a rock layer is older or younger than another.
uses the known half-life of radioactive isotopes present in objects to determine their age.
What determines age or date of the formation of an object.
(a)
What uses the known half-life of radioactive isotopes present in objects to determine their age.
Half-life
Radioactive Dating
Isotope Dating
Radiometric Dating
(a) is the time it takes for half of the original number of radioactive atoms to decay into a different element.
The Great Oxidation Event...
increased weathering rates through oxidation.
decreased weathering rates through oxidation.
What made elements locked up in rocks available to organisms, increasing biological and mineral diversity?
oxidation
stromatolites
physical weathering
what % oxygen in the atmosphere caused the Carboniferous Rainforest Collapse?
30%
60%
35%
100%
What evidence is used to date earth?
Relative Dating
Absolute Dating
Radiometric Dating
