ertay Flashcards

1
Q

is a naturally occurring and coherent
aggregate of one or more minerals.

A

Rock

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2
Q

is the breaking down or
dissolving of rocks and minerals on
Earths surface.

A

Weathering

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3
Q

is the separation and removal of
weathered rocks due to different agents
like water, wind, and glacier that causes
transportation of the material to where
they are deposited

A

Erosion

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4
Q

is solid material that is moved and
deposited in a new location. Sediment can
consist of rocks and minerals, as well as the
remains of plants and animals.

A

Sediment

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5
Q

is the process in which the
weathered materials carried out by
erosion settle down in a particular
location.

A

Deposition

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6
Q

are
important exogenic processes

A

Weathering, erosion, and deposition

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7
Q

Processes occurring on the Earth’s
surface and that generally reduce relief.

A

Exogenic :

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8
Q

is where rocks and minerals are
broken down by the elements of nature into
smaller pieces.

A

Weathering

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9
Q

is the movement of
broken-down, weathered rock from place to
place,

A

Erosion

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10
Q

means the laying down,
or depositing, of broken rock.

A

deposition

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11
Q

There are two types of weathering:

A

physical/
mechanical weathering and chemical
weathering.

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12
Q

the heat from accretion and bombardment of the
Earth during the early stages of formation.

A

Primordial heat -

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13
Q

the heat generated by long term radioactive decay

A

. Radioactive heat -

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14
Q

Earth was ______ when it was formed.

A

hot

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15
Q

Earth is thought to have arisen from a cloud of gas and dust in space. Solid
particles, called ________ condensed out of the cloud

A

“planetesimals”

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16
Q

The radioactive decay of elements is a

A

natural process.

17
Q

Radioactive decay of elements in the Earth’s mantle and crust results in production of
daughter isotopes and release of geoneutrinos and heat energy, or
_________

A

radiogenic heat.

18
Q

are responsible for the majority of radiogenic heat because of their enrichment
relative to other radioactive isotopes: uranium-238 (238U), uranium-235
(235U), thorium-232 (232Th), and potassium-40 (40K).

A

Four long-lived radioactive isotopes (large half-life)

19
Q

All radioactive decay produce heat, but only ____________________ will have made a continuing contribution to heat source
over geological time.

A

break-down of isotopes
with large half-life

20
Q

But the rate of travel of
waves from earthquakes – called _____________ – tells scientists a lot about
what materials make up the planet.

A

“seismic waves”

21
Q

while the heat energy
produced inside Earth is enormous, it is some
___________than what Earth
receives from the sun.

A

5,000 times less powerful

22
Q

Mechanisms that occur when boiling water:

A

i. There is a heat source at the bottom of the water.
ii. The heat rises to the top from the bottom, causing the surface water to
become hot. It radiates its heat into the air and then cools.
iii. The cooler water sinks into the space vacated by the ascending
warmer water. This cooler water starts to warm up, while the water that
rises starts to cool.
iv. The process continues, forming a top-to-bottom circulation of water.

23
Q

is the movement of the mantle as heat is
transferred from the core to the crust. The temperature of the mantle varies
depending whether it is near the crust or near the boundary of the core.

A

Mantle convection

24
Q

___________ drives most of the geological processes on Earth.
This measures the flow of thermal energy coming from the core, passing
through the mantle, and up to the atmosphere, which is mainly due to the
__________________

A

Earth’s heat budget, mantle convection.

25
Q

is the activity or the motion of the magma. Rocks that are
subjected to high temperature and pressure melt and become the magma.
Magma is a semi-liquid molten rock mixture that can be found in the lower
portion of the crust and the upper part of the mantle.

A

Magmatism

26
Q

The formation of intrusive igneous rocks or plutonic rocks
came from the solidification of magma beneath the Earth’s surface.

A

Plutonism.

27
Q

is the process when magma is being brought up to the
surface through a volcano.

A

Volcanism

28
Q

is any opening in the Earth’s crust that
allows magma and gases to be released in the upper crust.

A

Volcano

29
Q

It is a measure of a fluid’s resistance to flow.

A

viscosity

30
Q

It is a process of creating one or more secondary magmas from single
parent magma.

A

Magmatic Differentiation Processes

31
Q

a chemical process by which the composition of a
liquid, such as magma, changes due to crystallization. Common
mechanism for crystal fractionation is crystal settling. This means that
denser minerals crystallize first and settle down while the lighter minerals
crystallize at the latter stages.

A

Crystal Fractionation –

32
Q

as described in Bowen’s reaction series, quartz and
muscovite are basically the most stable minerals at the Earth’s surface,
making them the first ones to melt from the parent rock once exposed in
higher temperature and/or pressure. Partial melting of an ultramafic rock
in the mantle produces a basaltic magma

A

Partial Melting -

33
Q

this may occur when two different magma rises up, with
the more buoyant mass overtakes the more slowly rising body.
Convective flow then mixes the two magmas, generating a single,
intermediate (between the two parent magmas) magma.

A

. Magma mixing –