Answers to CE MC Questions (1992-2000)

DENUDATION

Weathering

 

Question

Ans.

Explanation

9602

B

 

0025

A

Feature X is formed by block disintegration which is caused by alternate expansion and contraction of rocks.

9920

A

 

9504

B

The key hint is temperature fluctuating around 0.

9601

D

 

9610

A

All of them are products of the weathering processes.

9811

D

The photo was taken in Shek O.  For details, please visit the 5Dee page, Shek O Trip.

9915

C

A layer is clearly seen from the photo.  It shows that rocks are peeled off layer by layer.

9723

D

Freeze and thaw action belongs to physical weathering.

9207

B

 

9209

D

(1) refers to solution; (2) refers to carbonation; (3) is hydration and (4) is hydrolysis.  All these are chemical processes leading to weathering.

9335

C

The dotted areas show the weathered rocks by chemical weathering.

9613

C

(2) and (4) are areas with abundant rainfall, sunshine and high temperature.  All these favour chemical weathering.

9208

A

The cracks show it is block disintegration while the depressions show honey-comb weathering has been taken place.

9505

C

The diagram shows honey-comb weathering, which is a kind of chemical weathering.  Great difference in diurnal temperature only favours physical weathering.

9916

D

(3) is not mentioned in notes.

9409

C

Similar photos found in 9208 and 9505.

0016

A

 

 

 

 

Answers to CE MC Questions (1992-2000)

DENUDATION

Mass Wasting

 

Question

Ans.

Explanation

9405

C

(1) and (3) show tectonic movements.

9603

A

 

9211

A

 

9509

C

 

9611

C

 

9720

A

The speed of mudflow depends much on rainfall.  It flows very fast during very intense rainfall.

9820

-

This item was deleted in exam.

9924

D

 

9817

C

 

9605

C

Most of the trees on Hong Kong Island are cut mainly due to building and construction.

9604

A

Soil creep is a kind of slow mass movement with the least hazard.

 

 

 

Answers to CE MC Questions (1992-2000)

DENUDATION

Erosion

 

Question

Ans.

Explanation

0021

D

The landscape is found in a desert in Australia where daily range of temperature is great and it is dry.  Wind and water/rain actions are found.

9814

A

 

9714

A

 

9415

D

Steep slopes are more vulnerable to water erosion.

9506

B

Screes are the products left behind after weathering.

9212

A

Soil erosion easily occurs when the soil loses protective cover by the vegetation.  (3) and (4) do not lead to the loss of such protective cover.

9917

C

The diagram shows the Amah Rock in Shatin.