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Question 1

What 30 Celsius in Fahrenheit?

Answer 1

F= c (9/5) +32 =86

Question 2

What is the boiling temp of water in Fahrenheit and kelvin?

Answer 2

212 f

373 k

Question 3

What does a Stevenson screen measure and how must it be placed to operate effectively?

Answer 3

Measures humidity and must be placed 1-2 m above ground / 4ft

Question 4

Via what heat transfer method does air in contact with the surface of the earth warm up?

Answer 4

Conduction

Question 5

Define convection

Answer 5

All about vertical movement of air. When heated, the air becomes lighter and rises, and vice Versa

Question 6

Name two instances that would cause rotors to form during convection within the earth’s atmosphere

Answer 6

Orographic lifting (wind flow interrupted by terrain) or when the surface emitting heat (Earth’s surface) is uneven

Question 7

Describe latent heat

Answer 7

Regarding states of change of aggregation, comes from hidden energy during change between states of matter

Question 8

What happens (according to easa) to the temp of the air surrounding an ice cube when melting?

Answer 8

The latent heat is absorbed but no change in temperature is detectable

Question 9

Via what process is the heat from the sun able to warm up the atmosphere?

Answer 9

Insolation heats the earth’s surface (via short wave radiation) which then absorbs this heat and conducts it to the surrounding air.

Question 10

Describe the effect on the varying temperatures of the troposphere and tropopause when a strong wind is present

Answer 10

When a strong wind is present, the air from the tropopause remains cool, even though the air in the troposphere is heating up via conduction from the earth’s surface

Question 11

How does the presence of cloud effect the temperature of the troposphere during night and day?

Answer 11

During the day, clouds limit the amount of sunlight allowed into the troposphere and therefore limits the temp. At night, the presence of clouds prevents the escape of warmth into the friction layer and so has an insulation-like effect.

Question 12

Lower and thicker clouds contain less water - true or false?

Answer 12

False

Question 13

What is diurnal variation?

Answer 13

Daily variation

Question 14

Out of rock, ice and water, which material is the easiest to heat?

Answer 14

Rock

Question 15

What is an equinox?

Answer 15

When earth’s equator is at 0degrees to the sun

Question 16

What is a calorie?

Answer 16

The heat needed to raise 1g of water by 1 degree

Question 17

How far away is the sun from the earth during the perihelion?

Answer 17

91 million miles (angle of 23.5)

Question 18

How far away from the sun is the earth during the aphelion? And at what time of year does this take place?

Answer 18

95 million miles and takes place fourth July

Question 19

What speed is the earth’s rotation on its axis ? And in what direction?

Answer 19

15.04 degrees per hour in anti-clockwise

Question 20

How much oxygen is present in the troposphere?

Answer 20

21%

Question 21

At what height approximately is the ozone layer?

Answer 21

25000km

Question 22

What temp is the tropopause in summer over the equator and poles on average?

Answer 22

-75c equator and -40/-50 at poles

Question 23

What’s the temp increase in the stratosphere?

Answer 23

In an isotherm up to 20km and then increase of 0.3 degrees per 1000ft up to 50km

Question 24

What are the following isa values?
Temp at Msl
Pressure at Msl
Density at Msl

Answer 24

Temp 15 Celsius
Pressure 1013 hPa / 29.92inHg /760 mm
Density is 1.225

Question 25

Why are there folds in the tropopause?

Answer 25

Because of meeting air masses

Question 26

What is inversion?

Answer 26

A layer of the atmosphere who’s temp increases with altitude

Question 27

What is an isa deviation?

Answer 27

Difference between isa temp and OAT

Formula is
15-(alt/1000 x2)

Question 28

In winter, is the sea or the land warmer?

Answer 28

The sea is warmer in winter because it’s specific heat is larger than the specific heat of land. This results in water heating up and cooling down slower than rock/earth

Question 29

What is the coldest layer of the atmosphere?

Answer 29

The mesosphere which descends to -290C by the time we reach the Mesopause