Air Pressure and Winds - Practice Test 5

Attempt the quiz above first, then review every question with its correct answer and a short explanation below.

1. Q1.Cyclones do not form at the Equator because:

   • A.Coriolis force is zero✓ Correct Answer
   • B.Too hot
   • C.No water
   • D.High pressure

   Explanation: Coriolis force is needed to spin the cyclone.

2. Q2.The wind measuring scale 'Beaufort Scale' ranges from:

   • A.0 to 12✓ Correct Answer
   • B.1 to 10
   • C.0 to 100
   • D.1 to 5

   Explanation: 0 is calm, 12 is hurricane force.

3. Q3.Which wind is called 'Helm Wind'?

   • A.UK (Pennines)✓ Correct Answer
   • B.USA
   • C.India
   • D.Japan

   Explanation: The only named wind in Britain.

4. Q4.Zonda wind is similar to:

   • A.Chinook / Foehn✓ Correct Answer
   • B.Mistral
   • C.Loo
   • D.Trade wind

   Explanation: It is a warm downslope wind.

5. Q5.The doldrums are characterized by:

   • A.Low pressure and calm winds✓ Correct Answer
   • B.High pressure and storm
   • C.Snow
   • D.Strong Westerlies

   Explanation: Converging air rises, creating calm surface conditions.

6. Q6.Planetary winds follow:

   • A.Fixed paths all year✓ Correct Answer
   • B.Random paths
   • C.Seasonal reversal only
   • D.Day/Night cycle

   Explanation: They blow in the same direction year-round.

7. Q7.Which layer is responsible for the Greenhouse Effect?

   • A.Troposphere (due to CO2/Water vapor)✓ Correct Answer
   • B.Stratosphere
   • C.Exosphere
   • D.Ionosphere

   Explanation: Greenhouse gases are concentrated in the lower atmosphere.

8. Q8.Which wind is responsible for the 'Roaring Forties'?

   • A.Westerlies✓ Correct Answer
   • B.Easterlies
   • C.Trade Winds
   • D.Monsoon

   Explanation: Westerlies in the SH are fierce.

9. Q9.Yamo is a warm wind in:

   • A.Japan✓ Correct Answer
   • B.Uganda
   • C.Chile
   • D.USA

   Explanation: It is a Foehn-like wind in Japan.

10. Q10.What is 'Backing' of wind?

    • A.Wind changing direction anti-clockwise✓ Correct Answer
    • B.Wind changing direction clockwise
    • C.Wind stopping
    • D.Wind speeding up

    Explanation: Backing is counter-clockwise shift; Veering is clockwise.

11. Q11.The pressure belt at 90° N and S is:

    • A.Polar High✓ Correct Answer
    • B.Polar Low
    • C.Subtropical High
    • D.Equatorial Low

    Explanation: Cold dense air creates High Pressure at poles.

12. Q12.Which of these is not a variable wind?

    • A.Trade Wind✓ Correct Answer
    • B.Cyclone
    • C.Anticyclone
    • D.Tornado

    Explanation: Trade wind is a Planetary (Permanent) wind.

13. Q13.Which instrument records continuous temperature?

    • A.Thermograph✓ Correct Answer
    • B.Thermometer
    • C.Barograph
    • D.Hygrograph

    Explanation: Thermograph plots temp over time.

14. Q14.Levanter is a wind in:

    • A.Spain (Mediterranean)✓ Correct Answer
    • B.USA
    • C.India
    • D.Australia

    Explanation: Easterly wind in the western Mediterranean.

15. Q15.Norther is a cold wind in:

    • A.USA (Texas)✓ Correct Answer
    • B.India
    • C.UK
    • D.Brazil

    Explanation: Cold wind blowing from North in Southern US.

16. Q16.Southerly Burster is a cold wind in:

    • A.Australia (NSW)✓ Correct Answer
    • B.USA
    • C.Canada
    • D.China

    Explanation: Cold wind affecting New South Wales.

17. Q17.The Horse Latitudes are characterized by:

    • A.Calm, sinking air, high pressure✓ Correct Answer
    • B.Storms, low pressure
    • C.Heavy rain
    • D.Snow

    Explanation: Descending air creates calm, dry, high-pressure zones.

18. Q18.Which gas is found in the highest percentage in the Exosphere?

    • A.Hydrogen and Helium✓ Correct Answer
    • B.Nitrogen
    • C.Oxygen
    • D.CO2

    Explanation: Lightest gases escape to space.

19. Q19.The normal air pressure in inches of mercury is:

    • A.29.92 inches✓ Correct Answer
    • B.32 inches
    • C.100 inches
    • D.15 inches

    Explanation: Standard pressure is 29.92 inHg (760 mmHg).

20. Q20.Wind speed is often measured in:

    • A.Knots✓ Correct Answer
    • B.Joules
    • C.Watts
    • D.Pascal

    Explanation: 1 Knot = 1.852 km/h (used in meteorology/marine).