Basic 1

Question 1

The Dust devil

Answer 1

Narrower and smaller in diamter

Question 2

Tropopause at Equartor

Answer 2

16 Km

Question 3

Tropopause at Mid Latitude

Answer 3

11 Km, -56,5 C

Question 4

Jet streams’ altitudes:

Answer 4

-Arctic Jetstream = 20,000ft
-Polar Jetstream = 30,000ft
-Sub-tropical Jetstream 40,000ft
-Equatorial Jetstream 50,000ft

Question 5

Snow Grains falls from:

Answer 5

from stratiform clouds

Question 6

Snow Pellets falls from:

Answer 6

from cumuliform clouds

Question 7

Cumulonimbus Clouds contains:

Answer 7

• Top of the anvil: High concentration of ice crystals.
• Edges of the anvil: Moderate concentration of ice crystals, generally less than at the top.
• Bottom of the cloud: Predominantly water droplets, minimal ice crystals.
• Cloud wall: Primarily liquid or mixed-phase content.

Question 8

In a Warm Occlusion

Answer 8

the WARM AIR is lifted.

Question 9

In a Cold Occlusion

Answer 9

the WARM FRONT is lifted (becomes a front aloft).

Question 10

The Degrees of Aircraft Turbulence in Light, Moderate and Servere

Answer 10

• 0,5 < Light
• 0,5-1 Moderate
• 1 > Severe

Question 11

The Instrument to determine the velocity of surface wind?

Answer 11

Anemometer

Question 12

The Instrument to determine RVR

Answer 12

Transmissometer

Question 13

The Instrument to determine the Atmospheric Humidity

Answer 13

Hydrometer / Psychrometer

Question 14

The Instrument to determine the Sensor to measure the height of Clouds?

Answer 14

Ceilometer

Question 15

The Instrument to determine the Solar Radiation?

Answer 15

Pyranometer

Question 16

The Instrument to determine the Atmpspheric Stability

Answer 16

Radiosonde

Question 17

The Instrument to determine the Altimeter pressure

Answer 17

Anenoid Barometer

Question 18

The Instrument to measuring the Air pressure

Answer 18

Barometer/ Mercury

Question 19

The Instrument to determine the amount of Precipitation

Answer 19

The Pulviometer

Question 20

GEOSTROPHIC WIND FASTER TO

Answer 20

EQUATOR

Question 21

GEOSTROPHIC FORCE FASTER to

Answer 21

Poles

Question 22

ITCZ in January

Answer 22

0-7 N degrees North

Question 23

ITCZ in July

Answer 23

15-20 N degrees North

Question 24

Rain

Answer 24

==> Clear ice

Question 25

Drizzle

Answer 25

==> Rime ice

Question 26

Tropical rain climate

Answer 26

(0°-10° N/S) formerly known as the equatorial climate

Question 27

Dry climate

Answer 27

(20°-35° N/S) formerly known as the arid subtropical climate

Question 28

Mid latitude climate or warm temperate

Answer 28

(40°-70° N/S) formerly known as the cool temperate climate Summer and winter seasons Average

Question 29

Sub-arctic climate (snowy forest)

Answer 29

(50°N-70°N) formerly known as the boreal climate

Question 30

Snow climate

Answer 30

(>70°N/S) formerly known as the polar climate

Question 31

Tropical transitional climate

Answer 31

(10°-20°N/S) formerly known as the savannah climate Warm dry winter, warm wet summer NW Africa - Ghana etc.

Question 32

Temperate transitional climate

Answer 32

(35°-40°N/S) formerly known as the warm temperate climate Warm dry summer, cool wet winter Mediterranean area

Question 33

If the reported RVR/VIS is less than the applicable minimum the approach how low can you descent?

Answer 33

Descent 1000 ft

Question 34

What are the examples of grid datasets to be prepared by WAFCs?

Answer 34

1) upper wind; 2) upper-air temperature and humidity; 3) geopotential altitude of flight levels; 4) flight level and temperature of tropopause; 5) direction, speed and flight level of maximum wind; 6) cumulonimbus clouds; 7) icing; and 8) turbulence;

Question 35

The mean position of oplar front during winter extends from?

Answer 35

Winter: Florida to SW England

Question 36

The mean position of oplar front during sommer extends from?

Answer 36

Summer: Newfoundland to N Scotland

Question 37

The speed, diameter, duration and slope of WARM front are?

Answer 37

- Warm front 10 knts - 400-600 nm - 4/7days - Slope 1:150

Question 38

The speed, diameter, duration and slope of COLD front are?

Answer 38

- Cold front 20-25knts - 200 nm -2/3 days - Slope 1:50

Question 39

ALTITUDE VS PRESSURE:

Answer 39

- 5 000 ft = 4/5 of sea level pressure (80%) - 8 000 ft = 3/4 of sea level pressure (75%) - 18 000 ft = 1/2 of sea level pressure (50%) - 36 000 ft = 1/4 of sea level pressure (25%)

Question 40

The Temprature and Humidity are

Answer 40

inversely proportional

Question 41

In WARM OCCLUSION

Answer 41

Cold front aloft

Question 42

In COLD OCCLUSION

Answer 42

Warm front aloft

Question 43

Polar low occurs

Answer 43

Only over water

Question 44

Thermal low

Answer 44

Most commonly over LAND (summer) but occurs also over WATER(winter)

Question 45

An 8-figure group which may be added to METAR from civil aerodromes? 508054

Answer 45

01 - Runway designator (first two digits) 0-9 - Runway Deposits (third digit) - Extent of runway contamination (fourth digit) - Depth of Deposit and braking Coefficient

Question 46

Runway Deposits (third digit) from 0 - 9?

Question 47

Extent of runway contamination (fourth digit)

Answer 47

1 = 10% or less 2 = 11% to 25% 5 = 26% to 50% 9 = 51% to 100%

Question 48

1 hpa at altitudes 5500, 12000, 16000?

Answer 48

5,500m (5) 15m 12,000m (2) 32M 16,000m. (6) 64m

Question 49

Mountain waves coming off the Rocky Mountains in the USA?

Answer 49

Up to Tropopause and extend 600 NM

Question 50

Jet stream North side>>

Answer 50

Polar side(cold side)