Questions

Q1) Often, we can find that the main channel on a delta is divided into several smaller channels. What are these channels knows as ?

A) None of the following

B) Delta stream

C) Tributeries

D) River capture streams

Q2) How are Ox-bow lakes formed?

A) Subsidence

B) Tectonic downwarping

C) By melting glaciers

D) Erosion of 2 back-to-back concave banks

Q3) Where can floodplains occur?

A) Upstream portion only

B) Between the upstream and downstream portion only

C) Downstream portion only

D) Both answers B and C

Q4) Which of the process take place at plunge pool at the foot of a waterfall?

A) Corrasion

B) Hydraulic action

C) Undercutting

D) Traction

5) Where can Deltas be formed other than at a river's mouth?

A) Downstream of a meander cut-off poin

B) In a huge plunge pool beneath a waterfal

C) When a river enters a lake

D) In a gorge

6) Which of the process takes place in a flood plain?

A) Hydraulic pounding

B) Corrosion

C) Corrasion

D) Deposition

7) Which of these is true about how a river change from source to the mouth?

A) River flow slows down on the lower gradient

B) Bedload becomes smaller and more rounded

C) Floodplain become wider

D) Channel becomes deeper and wider

ANSWERS

Q1 ( A )

Q2 ( D )An ox-bow lake is a small curved liake which is formed when the river cuts right through the neck of a meander. The river then takes a new shorter route and eventually deposition will block off the old meander to form an ox-bow lake.

Q3 ( D )

Q4 ( B )

Q5 ( C )

When a river meet a lake suddenly, all its energy has gone. The particles of sediments deposit out of suspension to form the delta.

Q6 ( D )

Q7 ( A )