features of a river

Question 1

source

Answer 1

where a river begins, high up in the mountain.

Question 2

Interlocking spurs

Answer 2

criss-crossing hills that form as the river erodes the softer rock.

Question 3

Tributaries

Answer 3

smaller rivers that join a larger river at a confluence.

Question 4

meanders

Answer 4

bends that form in the middle of a river due to greater lateral erosion.

Question 5

oxbow lakes

Answer 5

form when meanders are cut off.

Question 6

the mouth of the river

Answer 6

where it enters the sea

Question 7

the estuary

Answer 7

part of the river affected by tides.

Question 8

levees

Answer 8

flooding causes the deposition of levees in the lower course.

Question 9

lower course (old age stage)

Answer 9

almost flat. deposition is greater as the river moves slowly through a wide, flat floodplain.

Question 10

middle course (mature stage)

Answer 10

less steep than the upper course. lateral erosion occurs.

Question 11

waterfalls

Answer 11

vertical drops in the river channel formed by vertical erosion.

Question 12

upper course (youthful stage)

Answer 12

river begins here. vertical erosion is most powerful.