← Geography Short Tricks⚡ SHORT TRICK

Climatology - Short Trick

Layers, gases, pressure belts, local winds, fronts and cyclones — one sentence each

2 trick sentences6 pairs5 parts
0 / 4 learned · 0%
How to read
  • Guru Ram Each coloured word = one name in the list, shown below in the same colour
  • Panda Two colours in one word = two names
  • ➜ Order the numbered order matters · ⇄ Any order no order
1

Atmosphere — Layers and Gases

The five layers from the ground up, what each layer is known for, the ionosphere layers and the main gases of the air.

Trick 1

Five layers of the atmosphere

➜ from the ground up

Trupti strolled merrily through the exit.

  1. 1Tropospherepoles ≈ 8 · Equator ≈ 18 km
  2. 2Stratosphereup to ≈ 50 km
  3. 3Mesosphere50–80 km
  4. 4Thermosphere80 km to ≈ 640 km
  5. 5Exosphereoutermost — fades into space

Each boundary takes the name of the layer below plus “-pause” — tropopause, stratopause, mesopause · about 99% of the atmosphere’s mass lies within 32 km.

Pairs

What each layer is known for

4 sentences

Trupti talks about the weather every day.

Troposphere=All weather happens here — the “changing sphere” · ≈ 75% of the mass · temperature falls ≈ 6.5 °C per km

Strawberries were served on the jet plane.

Stratosphere=Ideal for jet aircraft · the ozone layer absorbs UV rays · discovered by Teisserenc de Bort

Meena is the coldest and watches meteors.

Mesosphere=The coldest layer (≈ −90 to −100 °C near 80 km) · meteors burn up here · noctilucent clouds

A thermos of tea sits by the radio.

Thermosphere=Its lower part is the ionosphere — reflects radio waves · the aurorae glow in this layer

The exosphere is mostly hydrogen and helium · beyond it lie the Van Allen radiation belts.

Pairs

Layers of the ionosphere

2 sentences

A kettle of medium size

E layer (Kennelly–Heaviside)=90–150 km — reflects medium radio waves

A small apple rolled far.

F layer (Appleton)=150–500 km — reflects short-wave radio, long-distance communication

The D layer (60–90 km) is the lowest — it forms by day and almost vanishes at night.

Trick 2

Main gases of dry air

➜ most to least (% by volume)

Nisha often arrives carrying news.

  1. 1Nitrogen78.08
  2. 2Oxygen20.95
  3. 3Argon0.93
  4. 4Carbon dioxide≈ 0.042 (≈ 427 ppm, 2025)
  5. 5Neon0.0018

Then helium, krypton, hydrogen, xenon · nitrogen and oxygen together ≈ 99% · water vapour 0–4%, about 90% of it in the lowest 5 km.

2

Insolation and Heat

Scattering versus diffusion, and how heat moves up-down and side to side.

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3

Pressure, Cells and Jet Streams

The doldrums and horse latitudes, the three circulation cells, the Coriolis force and two jet streams.

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4

Local Winds

Which region each hot and cold local wind belongs to, and the family of warm winds that come down mountains.

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5

Condensation, Fronts and Cyclones

Mist versus fog, convectional rain, how to tell the fronts apart and the many names of one storm.

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Read the full chapter for the complete notes — a trick helps you remember the list; understanding comes from the notes.