Weather elements

What is the diurnal range for the city of Mumbai?

• 29.5 ^oC

• 5 ^oC

• 32 ^oC

• 27 ^oC

What is the mean daily temperature for the city of Dehli?

• 20 ^oC

• 23 ^oC

• 3 ^oC

• 21.5 ^oC

How is the average monthly temperature calculated?

• the sum of all the maximum daily temperatures ÷ 12

• the sum of all the average daily temperatures ÷ 12

• the sum of all the maximum daily temperatures ÷ no. of days in the month

• the sum of all the average daily temperatures ÷ no. of days in the month

What it the relationship between altitude and atmospheric pressure? As altitude increases the the pressure _______

• decreases

• increases

• there is no change

• It depends on the latitude

What is atmospheric pressure?

• The force exerted on a surface by the humidity above it

• The force exerted on a surface by the air above it

• The force exerted on a surface by the air below it.

• The weight of the air pressing against an object

Name of the instrument used to measure atmospheric pressure is called a _______ .

All are parts of the mercury barometer:

• glass tube

• mercury

• vessel filled with mercury

• vacuum

• gradings in ^oC or ^oF

The simple mercury barometer, how does it work

• the mercury in the column exerts a force on the vessel at the bottom. The new level is the atmospheric pressure

• The pressure exerted by the atmosphere forces mercury into the glass tube. This shows the atmospheric pressure.

• The length of the vacuum in the glass tube is measured to give the atmospheric pressure

• The volume of mercury in the vessel below is measured to tell the air pressure

The length of the mercury in the column is measured in ______

• mm, cm or inches

• ml, L

• mg, g

• cm²

Unit of atmospheric pressure

• MB

  millibars

• mm

  millimeters

• cm

• m