weathering erosion and soils

Question 1

weathering

Answer 1

the breaking down of rocks.

Question 2

erosion

Answer 2

moves these particles

Question 3

deposition

Answer 3

places these particles somewhere else as sedements

Question 4

chemical weathering

Answer 4

breaks down rocks through chemical changes

Question 5

mechanical weathering

Answer 5

any process that uses mechanical forces to make big rocks into little ones aids in weathering processes.

Question 6

frost wedging

Answer 6

when water freezes in cracks in things and separates it.

Question 7

biological weathering

Answer 7

results from the mechanical action of plants and animals in rocks.

Question 8

mass waste

Answer 8

when rocks and soil move by gravity alone.

Question 9

saltation

Answer 9

larger sedement particleshop repeatedly over the stream bottom as they are carried along the flow.

Question 10

sorting

Answer 10

pattern of sedimentation.

Question 11

deltas

Answer 11

where a stream enters a large body of water like an ocean or large lake and the waters speed slows to a near standstill.

Question 12

alluvial fans

Answer 12

where intermitted streams in dry, mountinous areas empty into a flat desert.

Question 13

deflation

Answer 13

the process of forming desert pavements by wind erosion.

Question 14

abrasion

Answer 14

like sand blasting

Question 15

ventifacts

Answer 15

rocks in unusual shaped from abrasion.

Question 16

dunes

Answer 16

wind driven sand

Question 17

glacier

Answer 17

a large mass of dense ice that flows under the influence of gravity.

Question 18

valley glaciers

Answer 18

glaciers high in the mountains.

Question 19

cirques

Answer 19

bowl like depressions nestled in among the peaks.

Question 20

tarns

Answer 20

small lakes that form in cirques

Question 21

aretes

Answer 21

narrow, steep sided ridges.

Question 22

fjord

Answer 22

glacial valley

Question 23

glacial drift

Answer 23

deposits of sedements from glaciers.

Question 24

morains

Answer 24

tall deposits of dirt and pebels that the glacier moves.

Question 25

drumlins

Answer 25

long streamlined hills rising rising from ground morains composed of glacier till.

Question 26

eskers

Answer 26

long, winding ridges of well-sorted, stratified sedements apparently deposited by melt-water streams flowing under a glacier.

Question 27

kames

Answer 27

steep sided hills much like escars but shorter.

Question 28

pedologists

Answer 28

scientists who study soils, soil formation, and erosion.

Question 29

soil

Answer 29

layered formation at the surface of the earth made of inorganic earth materials combined with organic substances.

Question 30

horizons

Answer 30

layers soil is divided up into.

Question 31

humus

Answer 31

found in A-horizon decayed or organic material that provides many nutrients for plants and helps soil hold water.

Question 32

loam

Answer 32

an especially fertile topsoil, contains about equal parts of sand and silt and about half as much clay