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Period 6 Kristina
Flashcards rule!!
20
Science
8th Grade
09/14/2011

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Cards

Term
weathering
Definition
is the weathering away of rock;breaking of rock into smaller pieces.
Term
erosion
Definition
is the movement of weathered rock by wind, water, glaciers, or gravity.
Term
deposition
Definition
is the process by which eroded particles are "dropped off" or deposited
Term
Mechanical Weathering
Definition
physically breaks down rocks into smaller pieces.
Term
Chemical Weathering
Definition
breaks down rocks through chemical changes.
Term
abrasion
Definition
the grinding away of rock by particles in the air or water "natural sand blasting"
Term
Freezing and thawing
Definition
H20 freezes in a crack, expands and makes the crack bigger.
Term
plant grwoth
Definition
roots enter cracks, and break them apart.
Term
animal actions
Definition
burrowing animals can break apart rocks and loosens soil.
Term
release and pressure
Definition
less pressure cause the top layer to flake off.
Term
water
Definition
dissolves rock
Term
c02
Definition
mixes in the air with rain.
Term
carbonic acid
Definition
wears away the rock
Term
Acid Rain
Definition
pollution in the air reacts with h20 in the air.
Term
Living Organisms
Definition
produce acids that slowly wear away rock.
Term
Oxegyn
Definition
can combine with h20 and oxxidation.
Term
Rate of Weathering
Definition
a rock with many air spaces;wter cn seap into the the spaces and wethering occurs quickly.

Depends on two things:
Type of rock& permeble rock
Term
Definition
-rocks made up of minerals tht dissolve easily into H20 will weather more quickly.
Term
Definition
weathering occcurs more quickly in wet climates.
Term
Definition
wethering occurs more quickly in higher temperatures.
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