C01 - The Atmosphere

Question 1

Up to which height does the composition of gases in the Atmosphere remains the same?

Answer 1

60km.

Question 2

Name the composition of dry air and their volume (5)?

Answer 2

• Nitrogen (78%).
• Oxygen (21%).
• Argon (0.95%).
• Carbon Dioxide (0.05%).
• Other Gases (Water Vapour).

Question 3

Carbon Dioxide (CO₂) absorbs ‘____’ which acts as a heat source in the Atmosphere?

Answer 3

Long-wave Terrestrial Radiation.

Question 4

Ozone (O₃) absorbs ‘____’ which acts as a heat source in the Atmosphere?

Answer 4

Short-wave Solar Radiation.

Question 5

True or False. Pressure and Density increase with increasing Altitude?

Answer 5

False. It decreases.

Question 6

The Atmosphere is divided into what layers (4)?

Answer 6

• Troposphere.
• Stratosphere.
• Mesosphere.
• Thermosphere.

Question 7

The boundary between each Atmosphere layer is known as what?

Answer 7

Pause.

Question 8

Which Atmosphere layer is where most weather phenomenon takes place?

Answer 8

Troposphere.

Question 9

In the Troposphere, the Temperature ‘____’ with Altitude?

Answer 9

Decreases.

Question 10

What is the Temperature Lapse Rate in feet and metres in the Troposphere (2)?

Answer 10

• 1.98°C per 1,000ft.

- 0.65°C per 100m.

Question 11

What is the average height of the Troposphere?

Answer 11

11km.

Question 12

In the Tropopause, the Temperature ‘____’ with Altitude?

Answer 12

No longer decreases.

Question 13

What is the average height of the Tropopause over the Poles?

Answer 13

8km to 10km.

Question 14

What is the average height of the Tropopause over the Equator?

Answer 14

16km to 18km.

Question 15

What is the average height of the Tropopause over the Tropic of Cancer and Capricorn?

Answer 15

11km.

Question 16

Where are Jet Streams found?

Answer 16

Tropopause Folds.

Question 17

At what point (feet and metres) in the Tropopause does the Temperature remains constant (3)?

Answer 17

-56.5°C at 11km / 36,000ft.

Question 18

True or False. The Stratosphere Temperature approximately remains constant with increasing height?

Answer 18

True.

Question 19

What is the term given when Temperature remains constant with increasing Altitude?

Answer 19

Isothermal.

Question 20

What special layer is found in the Stratosphere and what is the height of this layer (2)?

Answer 20

Ozone at 25km AMSL.

Question 21

The Temperature of the Isothermal layer in the Stratosphere is ‘____’ until a height of ‘____ft’ (2)?

Answer 21

• -56.5°C.

- 65,000ft.

Question 22

After the Isothermal layer, the temperature (increases/decreases) by ‘____’ per ‘____ft’ until what height (3)?

Answer 22

• Increases.
• 0.3°C per 1,000ft.
• 105,000ft.

Question 23

At the top of the Stratopause, what is the Temperature?

Answer 23

0°C.

Question 24

The Mesosphere Temperature ‘____’ with Height?

Answer 24

Decreases.

Question 25

What is the height of the Mesosphere?

Answer 25

80km to 90km.

Question 26

What happens to the Temperature of the Mesosphere?

Answer 26

Starts from 0°C and reduces to -90°C.

Question 27

Air Pressure and Air Density ‘____’ with Altitude?

Answer 27

Decreases.

Question 28

What is the MSL Temperature?

Answer 28

+15°C.

Question 29

What is the MSL Pressure (3)?

Answer 29

• 1013.25 hPa.
• 29.92 inHg.
• 760 mmHg.

Question 30

What is the MSL Density?

Answer 30

1.225km/m³.