definitions

Question 1

water shed

Answer 1

a boundary between two drainage basins

Question 2

river source

Answer 2

where the river begins

Question 3

tributaries

Answer 3

small rivers streams that join the confluence

Question 4

confluences

Answer 4

main channel where tributaries meet

Question 5

river mouth

Answer 5

where the tuber meets the lake or the sea

Question 6

drainage basin

Answer 6

the land around a river from which water drain into the river

Question 7

hydraulic action

Answer 7

the force of the water against the bed and banks

Question 8

solution

Answer 8

the chemical traction between water and rock

Question 9

abrasion?

Answer 9

the sandpaper effect of load against the bed banks

Question 10

attrition?

Answer 10

the collision and breakdown of load

Question 11

traction

Answer 11

take place mostly in the upper course

large boulders and rocks are rolled along the river bed

Question 12

solution

Answer 12

can’t be seen

minerals are dissolved in the water this is a chemical change

Question 13

suspension

Answer 13

represents the majority of load transported in a river

fine light material is carried along the river

Question 14

saltation

Answer 14

only effects small pebbles

small pebbles and stones are bounced along the river bed.