Revision

Question 1

ISA temp at MSL

Answer 1

+15 Degrees

Question 2

ISA Pressure at MSL?

Answer 2

1013.25 HPA

Question 3

ISA density at MSL

Answer 3

1.225 kg/m3

Question 4

SALR-

DALR -

Answer 4

SALR- 1.8 degrees per 1000ft

DALR - 3degrees per 1000ft

Question 5

What is adiabatic

Answer 5

Changing in temperature due change in pressure.

I.e pressure decrease = more volume more space between molecules so decrease in pressure

Question 6

Absolute stability

Answer 6

Where environmental lapse rate is lower than both dry or sat lapse rate

Question 7

What is the DALR

SALR

Answer 7

.DALR - 3 degrees per 1000ft

SALR - 1.8 degrees per 1000ftv

Question 8

Absoulute Stability

Answer 8

When the ELR is lower than DALR

Question 9

Absolute instability

Answer 9

ELR is quicker than DALR and SALR

Question 10

Conditional stability

Answer 10

ELR is between DALR and SALR so one will be stable one will be instable

Question 11

Neutral stability

Answer 11

If ELR is equal to DALR or SALR

Question 12

Stevensen screen uses

Answer 12

For temp and humidity

Question 13

Temp decrease acrodig to isa

Answer 13

0. 65 per 100m

1. 98 per 1000ft

Question 14

What does clouds do to suns rays

Answer 14

They re-radiate it

Question 15

Define specific heat

Answer 15

Higher specific heat the slower it will transfer heat

Question 16

Density is increased by?

Answer 16

Decreasing pressure and increasing temperature

Question 17

How does temp affect density

Answer 17

Colder temp = more demse

Question 18

Equations for rate of decrease of pressure

Answer 18

96 x T / P

Question 19

Between what temperatures can supercooled water droplets form?

Answer 19

Betweeen 0 and -15

Question 20

What is the humidity mixing ratio

Answer 20

The number of grams of water vapoir per kg of dry air