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Fossil #1 is found 700ft under ground and fossil #2 is found 300ft under ground, which is newer?
Fossil #1
Fossil #2
Neither fossil is newer
Both Fossils are the same age
The idea that Earth processes that are at work today were at work in the past is called:
fossil record
rock cycle
rock formation
uniformitarianism
An estimation of a age made by comparing position of two objects is called:
rock cycle
fossil record
relative age
clast record
The theory that undisturbed layers of rock have the oldest layers on the bottom and the youngest on the top is called ______
fossil record
rock cycle
law of superposition
stratum
The preserved remains of an organism from long ago is called a ___________
stratum
clast
fossil
relative age
The __________of rocks is the numerical age and real age of rocks.
relative age
half-life
absolute age
earth age
All organisms contain the element_________, so it is used to find the ages of fossils.
carbon-14
carbon-12
carbon
carbon age
Geologist use the time it takes for a radioactive isotope to decay to half its original mass called a___________.
radioactive decay
isotope
half-life
carbon dating
Radioactive dating shows ___________ rocks are 4.6 billion years old.
Earth rocks
Moon rocks
Earth and Moon rocks
Radioactive rocks
The moon was made from a piece of _________ .
Moon
Earth
radioactive rocks
rock
Life on Earth has existed for more than _____________ years.
3.6 million
3 thousand
3 billion
4.6 billion
A long-lived natually occurring radioactive carbon isotope:
half-life
Isotope
Carbon-12
Carbon-14
The interaction of rigid lithospheric plates which move slowly over the underlying mantle is called ______________
Law of Superposition
Uniformitarianism
Plate tectonics
Radioactive decay
How old is a fossil with 30% Carbon-14?
10,000 years
15,000 years
20,000 years
25,000 years
Earth is about _________ billion years old.
4.2
4.3
4.5
4.6
The ______________ was made from a piece of _______________ during the time Earth was being created.
Earth : Moon
Moon : Earth
Earth : Earth
Moon : Moon
What isotope is being used on this graph?
Carbon- 11
Carbon- 12
Carbon- 13
Carbon- 14
How old is fossil with 80% carbon-14?
1,000 years
2,000 years
3,000 years
4,000 years
James Hutton came up with theory of _________ .
Relative age of rocks
Absolute age of rocks
Uniformitarianism
Half-life
When an element changes from it's original element is called an ______
half-life
superposition
radioactive decay
isotope
How old is a fossil with 40% carbon-14?
2,000 years
4,000 years
8,000 years
10,000 years
What type of rock are fossils found in?
Igneous
Metamorphic
Sedimentary
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