streams

Question 1

river system

Answer 1

river and all its tributaries

Question 2

tributary

Answer 2

a small stream that combines into a larger river

Question 3

gradient

Answer 3

slope of river, rise/run

Question 4

weathering

Answer 4

desintegration and decomposition of rock

Question 5

disintegration

Answer 5

change in shape, broken down, physical change

Question 6

decomposition

Answer 6

change to chemical composition, chemical change

Question 7

watershed

Answer 7

area drained by river directly or through tributaries

Question 8

divides

Answer 8

split up watersheds, areas of higher elevation

Question 9

discharge

Answer 9

amount of water that flows through a river, q=va calculated by dividing the river up into smaller sections

Question 10

erosion

Answer 10

when material is carried away

Question 11

deposition

Answer 11

when material is dropped, placed somewhere new after being carried away

Question 12

load

Answer 12

material eroded in a stream

Question 13

solution

Answer 13

material dissolved in a stream

Question 14

suspended load

Answer 14

load that is carried in the stream off the ground

Question 15

bed load

Answer 15

load that is rolled on the bottom of a stream

Question 16

competence

Answer 16

maximum size of sediment a stream can carry

Question 17

capacity

Answer 17

total amount of sediment a stream can carry

Question 18

base level

Answer 18

lowest point of a stream, lakes or oceans oceans are the lowest base level

Question 19

delta

Answer 19

depositional areas as drains into larger areas, lakes and oceans cross sectional area widens so velocity decreases and deposition begins

Question 20

cut bank

Answer 20

erosional area on the outside of a meander the water flows faster becaue there is less friction from the bed

Question 21

point bar

Answer 21

depositional area, inside of meander water flows slower because of increased friction

Question 22

stages of a stream

Answer 22

youthful: steep, v shaped valleys
mature: less steep, begins to meander
old age: low grandient, large flood plain, large meanders progesses through flooding and erosion

Question 23

how do streams level up

Answer 23

have to join with another stream of the same level

Question 24

what size of sediment depositions first?

Answer 24

larger sediment deposits first as it requires a higher velocity to carry

Question 25

what is capacity dependent on?

Answer 25

velocity and discharge

Question 26

levee

Answer 26

sediment deposited on the sides of a river

Question 27

meanders

Answer 27

bends that form in a stream over time

Question 28

v shaped valley

Answer 28

originally start eroding completely vertically water then begins to weather the sides of the of the stream channel the sediment then begins to fall in and form a v shape

Question 29

stream channel

Answer 29

the shape of the stream itself