Which of the following are the factors that cause variation in the amount of insolation on the Earth ? 

1. Rotation of the earth on its axis 

2. Length of the day 

3. Distribution of land and water on the earth 

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Consider the following conditions favourable for the formation and intensification of Tropical Storms : 

1. Presence of the Coriolis force 

2. Upper divergence above the sea level system 

3. High variations in the vertical wind speed 

Which of the conditions given above is/are correct ? 

Which of the following factors influence the ocean currents ?

1. Coriolis force 

2. Gravity 

3. Heating by solar energy  

4. Wind 

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Which of the following is/are warm ocean current(s) ?  

1. Alaska Current 

2. Agulhas Current 

3. Falkland Current  

4. West Australian Current 

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