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Reviewer > Earth Science Quiz 5 Q2 > Flashcards

Earth Science Quiz 5 Q2 Flashcards

1
Q

These are remains and traces of prehistoric life.

A

Fossils

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2
Q

What type of rocks are fossils usually preserved in?

A

Sedimentary Rocks

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3
Q

a. All animals (may/ may not) turn into fossils.
b. Fossils (may/may not) always be index fossils.

A

a. may
b. may not

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4
Q

What is the study of fossils?

A

Paleontology

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5
Q

This is any animal or plant preserved in rock record of the Earth that is characteristic of a particular span of geologic time or environment.

A

Index Fossils

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6
Q

These types of fossils help in correlating rocks, they must be distinctive, abundant, and short range.

A

Index Fossils

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7
Q

What are the 3 conditions needed for fossilisation?

A
  1. Rapid Burial
  2. Protective cover or medium
  3. Possession of hard parts of durable tisues
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8
Q

This condition prevents decomposition of remains. Without oxygen from atmosphere, the rate of decay becomes at minimum.

A

Rapid Burial

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9
Q

This condition prevents attack of organisms living on dead organisms, and prevent air and moisture from building up.

A

Protective cover or medium

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10
Q

This condition include bones, teeth, shells, and other hard parts of an organism will most likely be preserved during fossilization. Soft tissues, organs, and flesh usually disintegrate.

A

Possession of hard parts of durable tissues

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11
Q

What are the 2 types of fossilisation?

A

Preservation without alteration
Preservation with alteration

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12
Q

Types of Fossilisa. There is no major chemical change occurs to the carcass. Most organic molecules are intact and suitable for studying ancient life.

A

Preservation without alteration

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13
Q

Types of Fossilisa. Includes altering chem composition of remains. The subtypes of this are dependent on process involved.

A

Preservtion with alteration

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14
Q

What are the 8 subtypes of preservation with alteration?

A

Petrification or Petrified
Recrystallization
Amber
Carbonization
Trace Fossils (Ichnofossils)
Cast
Impression
Mold

PRACTice CIM

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15
Q

Alter Subtype. Most common method, it is when woody components of remains are replaced by material such as silica, leaving a rock.

NAPALITAN YUNG CELLS

A

Petrification

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16
Q

Alter Subtype. Minerals that make up a shell experience change converting them into DIFF MINERAL, SAME CHEM COMPONENTS.

Wala nang mattrace na DNA

A

Recrystallization or Replacement

17
Q

Alter Subtype. Process through which, soft tissues can be preserved. Because of pressure napiga yung carbon content.

A

Carbonization

18
Q

Alter Subtype. _______ aren’t the carcass or remains of an organism, instead, they are the traces left by one.

A

Ichnofossils of Trace Fossils

19
Q

Alter Subtype. Nabura yung carbon pero may natirang kulay itim (this is the ____ itself)

A

Impression

20
Q

Alter Subtype. Nakukuha yung hugis ng shell after it melts. It forms when hollow space of mold are filled with minerals.

A

Cast

21
Q

Alter Subtype. Yung mismong nasa loob, meaning this reflects the shape and outer markings (parang hollow).

A

Mold

22
Q

Alter Subtype. Fossilized/hardened tree resin where the animal or tree is trapped.

A

Amber

23
Q

This is a hierarchal set of divisions describing geologic time and serves as a “calendar” for significant historical occurrences.

A

Geologic Time Scale

24
Q

Geochronologic units of GTS in descending order:

A

Eons –> Eras –> Periods –> Epochs –> Ages

25
Q

GTS. This is the largest division of time, lasting thousands of millions of years.

A

Eons or Eonothems

26
Q

What are the eons in GTS?

A

Phanerozoic (Current Eon)
Precambrian (of Proterozoic, Archean, Hadean)

27
Q

GTS. These are the subdivision of eons. On the scale of hundreds of millions of years.

A

Eras or Erathems

28
Q

What are the eras in GTS?

A

Cenozoic, Mesozoic, Paleozoic (Neo-, Meso-), Paleo-proterozoic (Neo-, Meso-, Paleo-, Eo-archean)

29
Q

GTS. Also referred to as “systems”, are the subdivisions of eras lasting tens of millions of years.

A

Periods

30
Q

What are the more famous periods in GTS?

A

Quaternary (current period)
Cretaceous
Jurassic
Triassic
Devonian

31
Q

GTS. Also referred to as “series”, are subdivisions of periods. Range of several million years.

A

Epochs

32
Q

What is the current epoch?

A

Holocene

33
Q

Epoch. The _______ refers to the youngest part of the period and __________ refers to the oldest part of it.

A

Upper; Lower

34
Q

GTS. Also referred to as “stages”, are the smallest units of geologic time. Usually only a few million years in length.

A

Ages

35
Q

What is the current age in geologic time?

A

Meghalayan

36
Q

Divisions in GTS is determined by varying events such as:

A

Reversals
Extinction
Magnetic Pole
Start of Species of Organisms

REMS

Reviewer (31 decks)

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