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Met Exam > 1-100 > Flashcards

1-100 Flashcards

1
Q

The lowest layer in the atmosphere is?

A

The troposphere.

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2
Q

Where do you find the majority of the air within the atmosphere?

A

The troposphere.

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3
Q

The main constituents of the atmosphere are?

A

Nitrogen, oxygen, carbon dioxide, argon.

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4
Q

Which of these statements about the tropopause are correct or incorrect?

  1. Over the equator the tropopause is higher and warmer than over the poles.
  2. In the real atmosphere the tropopause is a continuous surface.
A

Both are incorrect.

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5
Q

Which of these statements about the tropopause are correct or incorrect?
1. The temperature at the tropopause is in the order of -80dc over the poles and -40dc over the equator.

  1. The height of the tropopause in the ISA is 11 km.
A

1 is incorrect, 2 is correct.

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6
Q

Which of these statements about the tropopause are correct or incorrect?
1. In the real at,o sphere the tropopause is a continuous surface.

  1. The height of the tropopause in the ISA is 11 km.
A

1 is incorrect, 2 is correct.

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7
Q

Which of these statements about the tropopause are correct or incorrect?

  1. In the real atmosphere the tropopause is a continuous surface.
  2. Above the tropopause the temperature decrease pern100 m is 0.65.
A

1 and 2 are incorrect.

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8
Q

In which layer is most of the atmosphere humidity concentrated?

A

The troposphere.

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9
Q

The thickness of the troposphere varies with?

A

Latitude.

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10
Q

Which layer of the atmosphere contains more than 90% of all water vapour?

A

Troposphere.

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11
Q

The troposphere is the …

A

Part of the atmosphere below the tropopause.

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12
Q

By volume, what percentage of the air in the lower troposphere consists of water vapour?

A

0 - 5%.

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13
Q

What is the average height of the tropopause over the equator?

A

16 km

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14
Q

How is the boundary layer between troposphere and stratosphere called?

A

Tropopause

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15
Q

What is the average temperature of the tropical tropopause?

A

-75dc.

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16
Q

Why are indications about the height of the tropopause not essential for flight documents in the tropics?

A

The tropopause is generally well above the flight level actually flown.

17
Q

Which one of the following statements applies to the tropopause?

A

It separates the troposphere from the stratosphere.

18
Q

Which one of the following statements applies to the tropopause?

A

It separates the troposphere from the stratosphere.

19
Q

The tropopause is a level at which temperature ceases to fall with increasing height.

A

.

20
Q

The average height of the tropopause at 50d N is about?

A

11km.

21
Q

The height and the temperature of the tropopause art respectively in the order of?

A

16 km and -75 dc over the equator.

22
Q

Is the following statement correct?

The layer just above the tropopause is absolutely stable.

A

Yes

23
Q

Does the temperature lapse rate change abruptly at the tropopause?

A

Yes.

24
Q

What is the approximate composition of the dry air by volume in the troposphere?

A

21% oxygen, 78% nitrogen, and the rest other gases.

25
Q

What can be said about the height of the tropopause in the northern hemisphere?

A

It decreases from south to north.

26
Q

On average going from the equator to the North Pole, the altitude of the tropopause….

A

Decreases and it’s temperature increases.

27
Q

The tropopause is lower over the North Pole than over the equator.

A

N

28
Q

The troposphere has a greater vertical extent above the equator than above the poles.

A

A

29
Q

The temperature at the tropopause is higher in polar regions than in equatorial regions.

A

Z

30
Q

The mean height of the tropical tropopause is?

A

54 000 ft.

31
Q

Considering the North Atlantic area north of 60dN during winter, the mean height of the tropopause is approximately?

A

29 000ft.

32
Q

Considering the North Atlantic at latitude 50dN during winter, the mean height of the tropopause is approximately?

A

31,000 ft.

33
Q

In the mid-latitudes the stratosphere extends on an average from?

A

11 to 50 km.

34
Q

The temperature at i am flying 140 is -12dc. What will the temperature be at i am flying 110 if the ICAO standard lapse rate is applied?

A

Step 1: determine standard temperature gradient =2d/1000

Met Exam (1 decks)

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