ch 27.1 27.2

Question 1

the breakdown of material of earths surface

Answer 1

what is weathering

Question 2

no they do not

Answer 2

do rocks weather at the same rate

Question 3

rocks will weather faster by wind rain and hail

Answer 3

what are the two main factors that determine how fast a rock will weather

Question 4

mechanincal weathering chemical weathering

Answer 4

what are the two types of weathering

Question 5

frost wedging biological activity collions

Answer 5

what type of change happens with mechanical weathering

Question 6

phiysical changes

Answer 6

what type of change happens with chemical weathering

Question 7

frost wedging bioligical wedging activity collions

Answer 7

what are the 3 specific types of mechanical weathering

Question 8

water between cracks and freezing

Answer 8

what causes frost wedging

Question 9

freeze thaw cycle

Answer 9

what is the cycle called during frost wedging

Question 10

plant and animal activity roots growing side of rock

Answer 10

what causes biological activity

Question 11

when rocks fall from clifs or tumble through turblent rivers

Answer 11

what causes weathering during collisions

Question 12

a mixture of weathered rock organic matter water and air that is capable of supporting life

Answer 12

what is soil

Question 13

soil forms

Answer 13

what is parent material

Question 14

different layers of soil

Answer 14

what are soil horizon

Question 15

6 different horizon

Answer 15

how many soil horizons are there

Question 16

false they do not always contain every horizon

Answer 16

true or false. all soils contain every soil horizon

Question 17

O,A,E.B,C,R hroizon

Answer 17

what are the specific soil horizon

Question 18

organinc materiel

Answer 18

what does the first horizon contain

Question 19

mostly minerals

Answer 19

what is the second horizon mostly made up of

Question 20

horizon E

Answer 20

which layer does leaching occur

Question 21

horizon B

Answer 21

which horizon collects materials from previous horizons

Question 22

horizon C

Answer 22

which layer is partially weathered bedrock

Question 23

horizon R

Answer 23

which layer is unweathered bed rock

Question 24

O and A

Answer 24

which soil horizons make up the topsoil

Question 25

E and B

Answer 25

which soil horizons make up the subsoil

Question 26

O A E B

Answer 26

which horizon make up the true soil