Rock And Fossol Records Flashcards

(46 cards)

0
Q

What are changes the result of

A

Geologic processes

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1
Q

What did James Hutton in 1795 write

A

The theory of the earth

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2
Q

Do the geologic processes remain uniform or do they change over time

A

They remain uniform

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3
Q

What is the theory of uniformitarianism.?

A

A principle that states that the same geologic processes shaping the earth today have been at work throughout the Earth’s history

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4
Q

What is catastrophism

A

The principle that states that all geologic change occurs suddenly

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5
Q

Scientist were eventually one over and supported_________.

A

Uniformitarianism

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6
Q

What is a compromise between the two

A

Theory of actualism

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7
Q

Most geological change is _______ and ________.

A

Uniform and gradual

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8
Q

________ Happen and can cause major changes in brief amounts of time

A

Catastrophes

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9
Q

What is relative dating

A

Determining whether an object is older or younger than the other objects

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10
Q

Definition

States that older rocks form on the bottom and newer rocks on the top of the older layers

A

Superposition

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11
Q

Definition
An ideal sequence of rock layers that contained on and fossils and rock formations on earth arrange from oldest to youngest

A

The geologic column

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12
Q

What is the geologic column created from

A

Many different observations and information gathered over time, combined to one resource

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13
Q

What is the geologic column used for

A

Interpret different rock sequences

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14
Q

A break in the earths crust where the pieces of crust slide along one another

A

Fault

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15
Q

When rock layers are slanted without folding

A

Tilt

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16
Q

A surface that represents a missing part of the geologic column

A

Unconformities

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17
Q

What do unconformities represent

A

Time that wasnt recorded

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18
Q

What could unconformities be from

A

Not forming or from a layer being eroded away

19
Q

What is absolute dating

A

A process of establishing the age of an object by determining the number of years it has existed. Finds and absolute age.

20
Q

Atoms of the same element that have the same number of protons, but a different number of neutrons.

21
Q

Most isotopes are________.

22
Q

Radioactive isotopes change and______________________.

A

Break down into stable isotopes

23
Q

How can isotopes help determine an objects age.??

A

Measuring the amount of radioactive isotopes vs stable isotopes

24
What is radiometric dating
Determining the absolute age of a material by comparing stable and radioactive isotopes.
25
What is a half life.???
The time it take for half of a radioactive sample to decay or become stable.
26
What is a fossil
Any naturally preserved evidence of life
27
Minerals fill in pore spaces of an organisms tissue
Permineralization
28
When an organisms tissues are completely replaced by minerals
Petrification
29
Organisms preserved by being covered by tree sap which hardens and forms amber
Fossils in amber
30
Organisms dry out in very dry climates and cannot decompose
Mummification
31
What is a trace fossil
A naturally preserved evidence of animal activity
32
Preserved animal dung or feces
Coprolites
33
A type of fossil formed on the ground from the organism being pressed into the ground
Mold
34
A fossil formed when the organism has decayed and sediment fills in the mold fossil
Cast
35
A nonrenewable resource formed from the remains of plants and animals that lived long ago
Fossil fuels
36
Most common solid fossil fuel
Coal
37
Thick liquid mixture of hydrocarbons
Petroleum
38
Gaseous mixture of hydrocarbons
Natural gas
39
The only rocks we have from this eon are from meteorites on the moon
Hadean eon
40
Earliest known rocks on earth formed during this eon
Archean eon
41
The first organisms with well developed cells appear
Proterozoic eon
42
People animals are first found in this eon.!!
Phanerozoic eon
43
Aquatic animals , amphibians, insects. Ended with a mass extinction . 90% species died.
Paleozoic era
44
Age of the reptiles, dinosaurs, some birds, and small mammals by the end of the era. 50% species died . Triassic, jurassic, cretaceous
Mesozoic era
45
Age of the mammals. We live in this era. Many mammals from early in the era are now extinct.
Cenozoic era