Earth Science 2

Front 1

weathering

Back 1

prcoess by which rocks on or near the earth's surface break down and change

Front 2

erosion

Back 2

the removal and transport of weathered material from one place to another

Front 3

mechanical weathering

Back 3

the process by which rock s and minerals break down into smaller pieces

Front 4

frost wedging

Back 4

the repeated thawing and freezing of water in the cracks of rocks

Front 5

exfoliation

Back 5

the process by which outer rock layers are stripped away in succession

Front 6

chemical weathering

Back 6

the process by which rocks and minerals undergo changes in their composistion as the result of chemical reactions

Front 7

hydoolosis

Back 7

the reachtion of water with other substances

Front 8

oxidation

Back 8

the chemical reaction of oxygen with other substances

Front 9

How does tempature affect mechanical weathering?

Back 9

temp: frost wedging-freezing and expanding water in the cracks of rocks cause them to break

Front 10

how does pressure affect mechanical weathering?

Back 10

a) overlying rock layers are removed, new top layers have less pressure, then cracks from. these cracks are called joints
b)outer rocks are basically stripped away like an onion peel... called expfoiliation

Front 11

how does water affect chemical weathering

Back 11

a) dissolves many minderals
b) hydrolosis

Front 12

how does oxygen affect chemical weathering

Back 12

oxidation

Front 13

how does carbon dioxide affect chemical weathering

Back 13

a) produce by living organisms through respiration
b) water+carbondioxide= carbonic acid

Front 14

how does acid precipitation affect chemical weathering

Back 14

oxidation of sulfur dioxide and nitrogen oxides

Front 15

what affects the rate of weathering

Back 15

climate-temp and precimitation

rock type and compsition-sed rocks are easily weathered

surface area- mechanical weathering

topography

Front 16

deposistion

Back 16

when materials are dropped in another location

Front 17

rill erosion

Back 17

the erosion by running water in small channels on the side of a slope

Front 18

gully erosion

Back 18

when a channel becomes deep and wide, rill erosion can evolve into gully erosion

Front 19

Zone of Accumulation

Back 19

the part of a glacier in which there is greater overall gain than loss in volume (top and snowing)

Front 20

Zone of Ablation

Back 20

bigger loss in volume (at btoom and metling)

Front 21

cirque

Back 21

a big hole (glaciers freezes to slide off mountains)

Front 22

horn

Back 22

in need of at least 3 cirques to make a horn

Front 23

arete

Back 23

ridges between 2 cirques

Front 24

Kinds of morains

Back 24

-terminal
-lateral
-medial

Front 25

slowest part of a stream

Back 25

bottom and sides

Front 26

fastest part of stream

Back 26

inside of cruves when stream is curvy (meandering stream)

Front 27

streams form

Back 27

V-shaped valleys

Front 28

glaciers form

Back 28

u-shaped valleys