Trick to remember Units of distance

Units of distances (i.e kilometer, metre, centimetre, millimetre) are very confusing.

We get struck at which is greater or smaller and by how much amount it is greater or smaller.

I'll share a trick to remember it easily.

Here it goes like:

Arrange units of distance in decreasing order:

kilometer > hectometre > decametre > metre > decimetre > centimetre > millimetre

    km            hm               dcm            m            dm              cm            mm

These distances are related as: 
1 kilometre (km) = 10 Hectometres (hm)

1 Hectometre (hm) = 10 Decametres (dcm)

1 Decametre (dcm) = 10 Metres (m)

1 Metre (m) = 10 Decimetres (dm)

1 Decimetre (dm) = 10 Centimetres (cm)

1 Centimetre (cm) = 10 Millimetres (mm)


Remember this decreasing order as:

King Henry Died a Miserable Death Called Measles.

I think, it is quite easy to remember this. 

How to remember Periodic Table

To memorize the lengthy periodic table is a very tough task. 

I'll give you a trick to remember periodic table elements groupwise.

1^st group elements (down the column)

 H      Li       Na          K         Rb           Cs          Fr

HeLeN KabR Se Farar.

2^nd group elements (down the column)

 Be       Mg           Ca         Sr            Ba         Ra 

Beta Maange Kanya Sundar Baap Raazi

13^th group elements (down the column)

 B      Al             Ga            In              Tl

BAl Gangadher Tilak

14^th group elements (down the column)

 C             Si            Ge            Sn                  Pb

College Student Gets Some Problem

15^th group elements (down the column)

 N               P               As             Sb               Bi

News Paper me Aaj Sab Bikta hai

16^th group elements (down the column)

O              S                  Se             Te        Po

Old Style Se TeePo

17^th group elements (down the column)

 F             Cl     Br     I   At

Face CBI At ur home

  

18^th group elements (down the column)

He       Ne              Ar       Kr        Xe        Rn

Hai Nana patekar Aaj Ka Zinda Raja

Pressure Belts and Winds

Pressure Belts and Winds

Atmospheric pressure at sea level MORE

Atmospheric pressure on the mountains LESS

when Temperature is LOW Pressure is HIGH.

There are three pressure belts:

1. Equatorial Low Pressure Belt (Doldrums)

2. Tropical High Pressure Belt (Horse Latitudes)

[Here, the pressure is high although high temperature because here pressure depend on the rotation and movement of air]

3. Sub Polar Low Pressure Belt

5° N to 5° S	Doldrums
5° to 30° N and S	Trade Winds
30° to 40° N and S	Horse Latitudes
35° to 60° N and S	Westerlies
60° to 65° N and S	Sub Polar Low Pressure Belt