Jet Stream

Question 1

Width of jet stream =
Length=
(Minimums)

Answer 1

200NM

2000NM

Question 2

Low pressure around equator because

Answer 2

Hot air rising more. (Bc of positioning to sun, the tilt). As hot air rising, low pressure is left at the bottom

Question 3

Higher pressure in colder areas as

Answer 3

Hot air rises, but bc it’s dense it doesn’t leave a void of low pressure. Air comes back down after rising, compresses, causes high pressure.

Question 4

Troughs represent

Answer 4

Pressure decrease, like a trench downwards.

Question 5

Orographic Low/depressions

Answer 5

Mountains, ALPS eg. Air moves around mountains, meaning area behind mountains have low pressure.

Question 6

High pressure systems

Answer 6

Air moves down, gets warmer

Question 7

Small scale heat

Answer 7

Ground heat moves up to tropopause

Question 8

Large scale heat

Answer 8

Earths tilt, heating dependant on that

Question 9

Ride of high pressure

Answer 9

Extension of high pressure regions. Protrude outwards into other pressure regions

Question 10

Anticyclones =

Answer 10

High pressure.

In N Hemisphere, spin clockwise

Question 11

Cyclones in northern hemisphere

Answer 11

LOW pressure

Wind spins anti clockwise

Question 12

Buy ballots law

Answer 12

Back to wind in northern hemisphere. Low pressure to the left.

Question 13

Blocking anticyclones

50⚫️N and 70⚫️N

Answer 13

Block depression (low pressure) movement

Question 14

COL

Answer 14

Saddle shaped ridge. Between two highs or two lows

Question 15

In day, around 2/3pm sea breeze…

Answer 15

Comes across from sea to land. Highest amount of air has risen from land. Greatest temperatures. Leaves greatest low pressure at bottom. For high pressure cold sea breeze to fill

Question 16

At night time. Sea has high specific heat capacity. So hot air only rises significantly at night, causing low pressure. This means that breeze come from

Answer 16

Land over sea. Pressure is now higher over land, as the land has cooled.

Question 17

Anabatic wind

Answer 17

DAYTIME

Hot air rises up the sides of the mountains.

Question 18

Katabatic wind

Answer 18

NIGHT TIME.

cold, heavy air, flows down into valley, gets lower, and gets colder, gets denser.

Question 19

The Bora (katabatic)

Answer 19

Cold air found around coastlines east of Adriatic sea. Cold air comes down from alps and from east Croatia.

Question 20

Jet streams tend to flow

Answer 20

From west to east

Question 21

The mistral

Answer 21

Airflow between two mountains. Like Venturi. Area decreases, speed increases.
Happens around southern France area. Goes into the Mediterranean.

Question 22

Fohn wind

Answer 22

Air approaches mountain. Rises, cools. Use DALR 3⚫️ per 1000ft. Humidity increases, eventually reaches 100% saturation. Then use SALR 1.8⚫️ per 1000ft. In which case clouds are formed. Will then precipitate, as can’t hold any more water. Then eventually moves back to DALR as it heats back up again when coming down other side of mountain.

Question 23

African winds (local winds) going into Mediterranean

Answer 23

Sirocco
(north west)

Ghibli
(central Northern Africa)

Khamsin
(towards Egypt area, going into Mediterranean)

Question 24

Global surface winds

Refer to picture in gallery (of globe with many arrows on. And roaring something bottom right of page.

Answer 24

Hadley cells above and below ITCZ.
Ferrell cell after Hadley
Polar cells after Ferrell

Question 25

ITCZ

Answer 25

Inter tropical convergence Zone