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                | 121. | The Elastic Rebound Theory deals with: |  
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				| A. | Distribution of oceans and continents | B. | Active and dormant volcanic activity |  
				 				 | C. | Folding and faulting | D. | Earthquakes |  
                        
                        
                            Answer: Option D Explanation:    |  
 
            
            
                | 122. | What is graben? |  
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				| A. | Downfolded area | B. | An unfolded area |  
				 				 | C. | An up forwarded | D. | A down faulted area |  
                        
                        
                            Answer: Option D Explanation:    |  
 
            
            
                | 123. | Where is focus of the plutonic earthquakes? |  
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				| A. | On the surface of earth | B. | Just below the crust of the earth |  
				 				 | C. | At great depth in the interior of earth | D. | It can be anywhere in basaltic rocks |  
                        
                        
                            Answer: Option C Explanation:    |  
 
            
            
                | 124. | The cradles of civilisation have been: |  
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				| A. | Valleys | B. | Plains |  
				 				 | C. | Plateau | D. | Hills |  
                        
                        
                            Answer: Option B Explanation:    |  
 
            
            
                | 125. | What layer of atmosphere is vital for telecommunications? |  
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				| A. | Troposphere | B. | Thermosphere |  
				 				 | C. | Stratosphere | D. | Ionosphere |  
                        
                        
                            Answer: Option D Explanation:    |  
 
            
            
                | 126. | Which cloud is likely to cause heavy rainfall? |  
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				| A. | Nimbo-stratus | B. | Cirro cumulus |  
				 				 | C. | Strato-cumlus | D. | Stratus |  
                        
                        
                            Answer: Option B Explanation:    |  
 
            
            
                | 127. | What is a cyclone? |  
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				| A. | A low pressure system with clockwise winds in the Northern Hemisphere | B. | A high pressure system with anti-clockwise winds in Northern Hemisphere |  
				 				 | C. | A low pressure system with anti-clockwise winds in Northern Hemisphere | D. | A high pressure system with clockwise winds in the Northern Hemisphere |  
                        
                        
                            Answer: Option C Explanation:    |  
 
            
            
                | 128. | Warm air tends to rise up through cold air because: |  
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				| A. | The warm air is heavier | B. | The warm air is denser |  
				 				 | C. | The warm air is less denser | D. | Of convection |  
                        
                        
                            Answer: Option C Explanation:    |  
 
            
            
                | 129. | Where is highest salinity found? |  
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				| A. | Dead Sea | B. | Red Sea |  
				 				 | C. | Lake Van | D. | Stream |  
                        
                        
                            Answer: Option C Explanation:    |  
 
            
            
                | 130. | What is an iceberg? |  
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				| A. | A Sea Mammal | B. | A floating mass of ice |  
				 				 | C. | A frozen sea | D. | A large coral formation |  
                        
                        
                            Answer: Option B Explanation:    |  
 
 
			
			
 
 
 
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