11). Which of the following represents a process of chemical weathering?
A). Thermal expansion and contraction |
B). Mass exfoliation |
C). Hydration and Hydrolysis |
D). Frost action and crystal growth |
|
12). Soil erosion can be prevented by :
A). allowing herbivorous animals to graze freely |
B). growing plants on a large scale to form soil cover |
C). making the land sloppy |
D). adding chemicals to increase cohesion |
|
13). Formation of pot holes in river beds is an example of :
A). hydration |
B). erosion |
C). corrosion |
D). attrition |
|
14). Exposure of rock to the changes of temperature is the cause of :
A). Biological weathering |
B). Chemical weathering |
C). Degradational weathering |
D). Mechanical weathering |
|
15). Which of the following climatic conditions are conducive to mechanical weathering? 1. Hot 2. Cold 3. Wet 4. Dry
A). 1 and 4 |
B). 2 and 4 |
C). 1 and 3 |
D). 2 and 3 |
|
16). The removal of rock, layer by later due to weathering is called :
A). block disintegration |
B). dellaation |
C). exfoliation |
D). granular disintegration |
|
17). The denudational processes have not reduced the land masses to a level surface because :
A). the sea level is changing |
B). the earth movements have uplifted the landmass |
C). there has not been enough time |
D). these processes are intermittent in action |
|
18). Which of the following is not an agent which produces physical features?
A). Denudation |
B). Deposition |
C). Volcanic eruption |
D). Conduction |
|
19). Bowl shaped depression created as a result of glacial erosion high on a mountainside is called :
A). Glacial trough |
B). Hum |
C). Hanging Valley |
D). Cirque |
|
20). 20 Decaying vegetation produces organic acids which causes a breakdown of minerals. This is :
A). physical weathering |
B). chemical weathering |
C). both (a) and (b) |
D). chemical erosion |
|