Weather

Multiple choice questions. Choose the best answer.

1. A high cloud is composed mostly of
   
   

   a) hail.
   b) ozone.
   c) condensation nuclei.
   d) ice crystals.




2. The suffix nimbus as used in naming clouds means
   
   

   a) a cloud with excessive vertical development.
   b) a rain cloud.
   c) a middle cloud containing ice pellets.
   d) an accumulation of clouds.




3. What is meant by "dewpoint"?
   
   

   a) The temperature at which condensation and evaporation are equal.
   b) The temperature at which dew will always form.
   c) The temperature to which air must cool to become saturated.
   d) The spread between the actual temperature and the temperature during evaporation.




4. Clouds, fog or dew will always form when
   
   

   a) water vapour condenses.
   b) water vapour is present.
   c) relative humidity reaches or exceeds100%.
   d) the temperature and dewpoint are equal.




5. Fog is often present in industrial areas because of
   
   

   a) atmospheric stabilization around cities.
   b) an abundance of condensation nuclei from combustion products.
   c) increased temperatures due to industrial heating.
   d) a concentration of steam from industrial plants.




6. In which situation is advection fog most likely to form?
   
   

   a) A warm moist air mass on the windward side of mountains.
   b) An air mass moving inland from the coast in winter.
   c) A light breeze blowing cooler air onto the sea.
   d) Warm moist air settling over a warm surface in calm winds.




7. To "diverge" means to
   
   

   a) come together.
   b) break apart.
   c) rise rapidly.
   d) remain relatively stable.




8. To "converge" means to
   
   

   a) come together.
   b) break apart.
   c) rise rapidly.
   d) remain relatively stable.




9. "Humidity" refers to
   
   

   a) a rise in temperature.
   b) the amount of dampness or water vapour in the air.
   c) the point at which saturation occurs.
   d) radiation from water or land.




10. 
    
    

    a)
    b)
    c)
    d)




11. 
    
    

    a)
    b)
    c)
    d)




12. 
    
    

    a)
    b)
    c)
    d)




13. 
    
    

    a)
    b)
    c)
    d)




14. 
    
    

    a)
    b)
    c)
    d)




15. 
    
    

    a)
    b)
    c)
    d)

Answer key	1.	6.	11.
	2.	7.	12.
	3.	8.	13.
	4.	9.	14.
	5.	10.

Compiling such a data bank is an ongoing process. Comments and contributions are appreciated by those persons who use this resource.

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