process of giving out energy by the sun

amt of solar radiation received on earth'ssurface

received as short waves

does not heat the atmosphere

varies from place to place, depends on

heat is reflected back by the earth's surface

long wave radiations

heats up the atmosphere

made out of glass tube

mercury in it which expands on heating andcontracts on cooling

scale of a thermometer

Six's thermometer

daily range

Average / mean temperature

annual range

pressure exerted decreases with increase inheight

decrease by 1 cm of mercury per 110metres of ascent

highest at sea level

decreases with increase in temperature

unequal heating of

rotation of the earth

high temperature

low temperature

Equatorial Low (doldrums)

Sub Tropical High

Sub Polar Low

Polar High

simple barometer

aneroid barometer

ranges

cm of mercury

inches of mercury

millibars (mb)

height of an airplane during its flight

barograph

amount of water vapour

per cubic metre of air

e.g. 20 gm / cubic metre

ratio of

expressed as % e.g. 25%

air saturation

saturated air has a relative humidity of100%

dry air has a relative humidity of 0%

wet and dry bulb thermometer

precipitation in liquid form

most common form of precipitation

precipitation in frozen lumps of ice

form inside tall cumulonimbus clouds

precipitation in tiny water droplets whichcondenses on cool surfaces

occurs on calm clear cold nights

precipitation in the form ice crystals

at high latitude and mountain regions

rain water collected through funnel for 24hrs

water measured with a measuring glass

kept slightly above the ground (30 cm)

winds that blow

winds that blow

examples

arrow of the wind vane points to thedirection of wind

measured in km/h

nowadays for recording continuous windvelocity we use a anemograph

records wind velocity continously

high clouds

middle clouds

low clouds