Chapter 10 Atmospheric Circulation and Weather Systems

1. Which of the following statements is/are conducive to the formation of tropical cyclones?

1. Presence of the Coriolis force.
2. Upper divergence above the sea level system.
3. Small variations in the vertical wind speed.
4. Large sea surface with temperature higher than 27° C.

Which of the statements given above is/are correct?

2. match the following statement.

Choose the correct answer

3. Take a look at the following statements.

1. Wind is air moving horizontally.
2. When air is heated, it expands, and when it is cooled, it contracts.

Which of the following assertions is/are correct?

4. If the surface air pressure is 1,000 mb, the air pressure at 1 km above the surface will be:

5. If the surface air pressure is 1,000 mb, the air pressure at 1 km above the surface will be:

6. Air pressure is measured with

7. Consider the statement below.

1. As you get higher, the air pressure drops.
2. The air at the surface is denser and has a higher pressure due to gravity.

Select the correct response.

8. Take a look at the following statement.

1. The horizontal pressure gradient force is always substantially greater than the vertical pressure gradient force.
2. On a weather map, isobars are lines that connect points of equal atmospheric pressure.

Select the correct response.

9. Choose the right equatorial low explanation.

10. The Inter Tropical Convergence Zone normally occurs:

11. Consider the following proposition in relation to Pressure Gradient Force.

1. Where the isobars are close together, the pressure gradient is strong.
2. The pressure gradient is the rate of change of pressure with respect to distance.

Select the correct response.

12. It affects the speed of the wind. It is greatest at the surface and its influence

generally extends upto an elevation of 1 – 3 km. Over the sea surface the friction is minimal.

Choose the correct possible answer

13. Take a look at the following remarks about Coriolis Force.

1. It is non-existent at the poles and highest at the equator.
2. The angle of latitude is directly proportional to the Coriolis force.
3. The Coriolis force works in the opposite direction of the pressure gradient force.
4. The Coriolis force is zero at the equator, and the wind blows perpendicular to the isobars.

Which of the following assertions is/are correct?

14. The direction of wind around a low pressure in northern hemisphere is:

15. consider the following statement .

1. Statement : (A) Near the equator, tropical cyclones do not form.
2. Reason : (R)  The Coriolis force is zero at the equator.

Select the correct answer using the code given below.

16. Take a look at the following statements.

1. Only the Coriolis force controls the winds in the upper atmosphere, 2 to 3 km above the surface.
2. The Coriolis force balances the pressure gradient force when isobars are straight and there is no friction.

Which of the following assertions is/are correct?

17. Which one of the following is the source region for the formation of air masses?

18. Consider the statement below.

1. Cyclonic rotation is the motion of the atmosphere in the same direction as the rotation of a planet.
2. Anti cyclonic circulation is the wind circulation around a high pressure area.

Select the correct response.

19. Consider the following statement in relation to The pattern of planetary winds is greatly dependent on.

1. the distribution of continents and oceans.
2. the rotation of earth.
3. emergence of pressure belts.

Choose the correct answer

20. Select the appropriate statement.

21. Consider the following statement in relation to the Intertropical Convergence Zone (ITCZ).

1. It’s a convergence zone where the trade winds collide.
2. Convection generated by high insolation causes the air in the Inter Tropical Convergence Zone (ITCZ) to rise, resulting in a low pressure.

Select the correct response.

22. Consider the following statement in relation to the Intertropical Convergence Zone (ITCZ).

1. It’s a convergence zone where the trade winds collide.
2. Convection generated by high insolation causes the air in the Inter Tropical Convergence Zone (ITCZ) to rise, resulting in a low pressure.

Select the correct response.

23. Which one of the following is the originate   region of  Tropical cyclones ?

24. Take a look at the following statements.

1. During the day, the land heats up faster than the sea and becomes warmer.
2. The land loses heat more quickly and is therefore cooler than the sea.

Which of the following assertions is/are incorrect?

25. Choose the correct katabatic wind explanation.

26. Choose the correct katabatic wind explanation.

27. Take a look at the following remark about Fronts.

1. Fronts are the boundaries that separate air masses of varying temperatures.
2. The sort of front is determined by the air mass’s properties as well as the direction in which it is flowing.

Select the correct response.

28. match the following statement.

Choose the correct answer

29. match the following statement.

Choose the correct answer

30. Take a look at the following remark on Extra Tropical Cyclones.

1. Cyclones in the temperate zone migrate from west to east.
2. Storm systems forming in the mid and high latitudes are known as Extra-Tropical Cyclones.
3. Extra-Tropical Cyclones affect a significantly broader region than tropical cyclones, although not by much.

Select the correct response.