Meteorology

Question 1

What is an isobar

Answer 1

An isobar bar is a line on a meteorological chart that joins places of equal sea level pressure

Question 2

What is the correct definition for the heat

Answer 2

Heat is a form of energy which is measured in calories

Question 3

How the heat is absorbed by the earth surface

Answer 3

Insulation

Question 4

Which are the conditions for which advection fog will be formed

Answer 4

Warm moist air over cold surface

Question 5

When does the dirunal variation reach its maximum

Answer 5

Clear sky, still wind

Question 6

State the correct definition of dewpoint

Answer 6

Dewpoint is the temperature where moist air must be cooled to reach saturation

Question 7

From which of the following can the stability of the atmosphere be determined

Answer 7

ELR

Question 8

What is DARL

Answer 8

It is the adiabatic temperature change for unsaturated air as it rises

Question 9

How do clouds are formed

Answer 9

Adiabatic cooling of the rising air

Question 10

Why does a Cumulus cloud have a flat base

Answer 10

Cu cloud has a flat base due to the uniform decrease in temperature of the DALR

Question 11

The formation of the lenticular clouds is due to

Answer 11

Airflow rises over a mountain area and cools adiabatically on the hillside

Question 12

What is the correct definition of fog

Answer 12

Parcels of low level air with small suspended water droplets to reduce visibility 

Question 13

What is true about dewpoint temperature

Answer 13

Can be equal to or lower than the temperature of the air mass

Question 14

Describe how radiation fog is formed

Answer 14

Ground calling due to radiation

Question 15

Describe how frontal fog is formed

Answer 15

A warm air mass flowing across a colder surface

Question 16

How advection fog is formed

Answer 16

Advection fog can occur quite suddenly at day or night, land or sea

Question 17

Radiation fog rises from the surface to

Answer 17

800 feet

Question 18

When does frost most likely occure

Answer 18

Frozen water cover when the earth surface has a subzero temperature

Question 19

What is true about thunderstorm formation

Answer 19

High moisture content in the air

Question 20

Describe the mature stage of the thunderstorm

Answer 20

Water droplets start to fall through the cloud drawing air down with them

Question 21

What is the cloud type most likely to proceed a thunderstorm

Answer 21

Altocumulus castallanos

Question 22

Which are the factors that caused the formation of the wind

Answer 22

Wind is a horizontal movement of air in the atmosphere by horizontal pressure difference

Question 23

When does the wind is said to be veering

Answer 23

A veering wind is when it changes its direction in a clockwise direction

Question 24

What is the pressure gradient force

Answer 24

A pressure gradient force acts at right angles to the isobars and is responsible for the movement of a parcel of air from high-pressure to low-pressure area

Question 25

What is the geostrophic force

Answer 25

The geostrophic force is an apparent force that acts on a parcel of air that is moving over the rotating earth surface

Question 26

What is the gradient wind

Answer 26

Gradient wind is the resulting wind which it blows around the curved isobars with a common circular low or high pressure patterns

Question 27

What are the factors that caused the geostrophic wind to be stronger than the gradient win around a low pressure pattern

Answer 27

Centrifugal force opposes the gradient force

Question 28

What is the correct definition of “the Bora”

Answer 28

It’s a cold katabatic wind that may produce violent gusts

Question 29

What is true about the jet streams

Answer 29

Jet streams are narrow bands of high speed upper thermal wind at a very high altitudes

Question 30

Where is located the core of the jetstream

Answer 30

At the level where temperature change is little or nil and the pressure surface is at maximum slope

Question 31

What is true about the polar front of jet stream

Answer 31

It is located where there is little vertical temperature gradient but the horizontal pressure gradient is high enough

Question 32

In which of the following conditions a fohn wind occur

Answer 32

Fohn wind occur when the condensation level is higher on the lee side of the hill

Question 33

What are the air mass is most likely to affect Western Europe

Answer 33

Polar maritime and tropical maritime air

Question 34

What is the weather associated with low pressure system

Answer 34

Frontal weather

Question 35

What is the weather associated with high pressure system

Answer 35

Light winds

Question 36

What is the gradient of a warm front

Answer 36

1:150

Question 37

What is the gradient of cold front

Answer 37

1:50