Chapter 3 Marinescience Green Ayl's

Front 1

The Big Bang is

Back 1

the theorized beginning of the universe from a single point

Front 2

A protostar is

Back 2

the theorized beginning of a star caused by gases accumulating and condensing into a dense core

Front 3

Scientist theorize that heavy elements formed

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when light atoms within stars fused, becoming heavier atoms

Front 4

In a satrs theorized life cycle , a supernova occurs when

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the star consumes all the hydrogen fueling it

Front 5

It's theorized that the solar system

Back 5

resuted when a supernova shock wave caused a nebula to condense and spin

Front 6

The planets were formed, according to theory,

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when some condensing gas revolving around the sun collapsed

Front 7

Scientists theorize that stars formed

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when protostars beacme so dense that nclear fusion began in their cores

Front 8

The nebular theory is the theory that

Back 8

the solar system formed from a nebula.

Front 9

According to neblar theory,Earth and other planets formed due to a process called

Back 9

accretion

Front 10

The process by which matter became layered according to density during Earth's formation, with heavier matter near the core and lighter material closer to the crust , is called

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density stratification

Front 11

The more accepted theoryof the moon's origin is

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that a planet-sized object struck young earth, sending material into orbit that eventually became the moon.

Front 12

It is theorized that the atmosphere formed

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only after Earth cooled enogh for water to accumulate on the surface.

Front 13

It is theorized that the oceans formed

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only after Earth cooled enough for water to acmlate on the srface.

Front 14

Scientists theorize that the formation of the oceans

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created the atmospheric changes required for terrestrial life to form.

Front 15

The most compelling evidence that supports the theory that life began in the oceans is

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based on how scientists interpret the fossil record.

Front 16

According to theory, the first molecular building blocks of life

Back 16

are readily formed under certain conditions by natural processes.

Front 17

Scientists theorize that nonliving chemicals became life when

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a large, stable molecle formed by chance and became capable of reproducing itself.

Front 18

Abiogenesis is

Back 18

the origin of life from nonliving matter.

Front 19

A(n) ___________ is an organism taht relies on consuming chemical componds. A(n) ___________ is an organism that can create organic chemical componds from inorganic compounds and an external energy source.

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heteotroph, autotroph

Front 20

True or False:
Oxygen is important to life because it allows organisms to use chemical energy more efficiently.

Back 20

True

Front 21

The theory of eveolution says that modern organisms and their characteristics arose through the processes of __________ and ___________
over millions of years.

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mutation, natural selection

Front 22

True or False:
Scientists may classify marine enviroments based on a wide range of physical characteristics, or a combinatiopn of physical characteristics

Back 22

True

Front 23

The ________ zone refers to water portion iof the ocean . The ________ zone refrers to the bottom.

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pelagic, benthic

Front 24

The zone between the low-tide mark and the edge of the continental shelfis the

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neritic zone.

Front 25

The zone of deep water in the open ocean is the

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bathypelagic zone

Front 26

Shore bottom that is splashed but not submerged is the _________ zone of the benthic zone.

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supralittoral

Front 27

The marine lifestyle that consists of organisms that swim is called

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nekton

Front 28

The neston are organisms that _________. They're a subgroup of the_________.

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float, plankton

Front 29

_________ refer(s) to organisms that live on the sea bottom. ___________ are those organisms that live buried or partially buried in the sea bottom.

Back 29

Epifauna and epiflora, infana