What are periodic winds?
Westerly winds
Winds that do not change their direction periodically with the change in season
Winds that change their direction periodically with the change in season
Trade winds
Mercury is often used in barometer because____________________?
it is the best liquid
the height of barometer will be less
its vapour pressure is so low that it may be neglected
it moves easily
The atmospheric pressure with rise in altitude decreases__________________
linearly
first slowly and then steeply
first steeply and then gradually
unpredictable
The amount of water vapour present in the air is called
Temperature
Moisture
Humidity
None of these
The winds which never change their direction are called
Permanent Wind
Planetary Winds
Local Winds
The term monsoon has derived from the Arabic word 'mousom' meaning
Rainfall
Seasons
Months
Climate
Imaginary lines joining places of same atmospheric pressure above sea level is called
isobars
isotherms
isohyets
isotopes
The speed of wind will be _________ over ocean surfaces and plains as the friction is __________.
high , less
less , high
decrease , increase
None
What is meant by Coriolis force?
An earth force that tends to deflect the moving objects on earth
An earth force that tends to vary the temperature
An earth force that tends to vary the pressure
An earth force that tends to vary the gravitational force
Which of the following affects atmospheric pressure?
Altitude
Earth rotation
All the above
