EXPLANATIONhttp://www.englishdirection.com/tocHow Da and Night HappenThe s!n seems to rise in the morning" crosses the s# d!ring the da and sets at night. Howe$er thes!n does not act!all mo$e aro!nd the earth. Earth%s t!rning on its a&is ma#es it loo# as i' the s!n ismo$es.The earth ma#es a complete t!rn on its a&is 'or () ho!rs. It is called as rotation. It ca!ses da and night. The earth also mo$es aro!nd the s!n. It ta#es *+, das or a ear. This process is called re$ol!tion. The re$ol!tion process ca!ses the changes o' the seasonHow Earth-!a#es HappenEarth-!a#e is one o' the most destroing nat!ral disasters. .nl!c#il it o'ten happens in se$eral regions. /ecentl a horri0le earth-!a#e has sha#en 1est 2!matra. It has 0ro!ght great damages. 1h did it occ!r3 Do o! #now how an earth-!a#e happens3Earth-!a#es are !s!all ca!sed when roc# !ndergro!nd s!ddenl 0rea#s along a 'a!lt. This s!ddenrelease o' energ ca!ses the seismic wa$es. It ma#e the gro!nd sha#e. 1hen two 0loc#s o' roc# or two plates are r!00ing against each other" the stic# a little. The don%t 4!st slide smoothl. The roc#s are still p!shing against each other" 0!t not mo$ing. A'ter a while" the roc#s 0rea# 0eca!se o' all the press!re that%s 0!ilt !p. 1hen the roc#s 0rea#" the earth-!a#e occ!rs.D!ring the earth-!a#e and a'terward" the plates or 0loc#s o' roc# start mo$ing" and the contin!e to mo$e !ntil the get st!c# again. The spot !ndergro!nd where the roc# 0rea#s is called the 'oc!s o' the earth-!a#e. The place right a0o$e the 'oc!s is called the epicenter o' the earth-!a#e. 5ainl ta#en 'rom: www.geo.mt!.ed!/.P2eis/wh.htmlHow does /ain Happen3/ain is the primar so!rce o' 'resh water 'or most areas o' the world" pro$iding s!ita0le conditions 'or di$erse ecosstems" as well as water 'or hdroelectric power plants and crop irrigation.The phenomenon o' rain is act!all a water circle. The concept o' the water ccle in$ol$es the s!n heating the Earth%s s!r'ace water and ca!sing the s!r'ace water to e$aporate. The water $apor risesinto the Earth%s atmosphere. The water in the atmosphere cools and condenses into li-!id droplets. The droplets grow !ntil the are hea$ and 'all to the earth as precipitation which can 0e in the 'orm o' rain or snow.Howe$er" not all rain reaches the s!r'ace. 2ome e$aporates while 'alling thro!gh dr air. This is called $irga" a phenomenon which is o'ten seen in hot" dr desert regionshttp://at!ngsetiono.0logspot.com/(667/68/e&planation9te&t.html1ater :cleThe water ccle has 'o!r stages: e$aporation" condensation" precipitation" and storage. 1ater on Earth gets stored in oceans" la#es" ri$ers" ice" and e$en !ndergro!nd. The oceans store the ma4orito' this water.E;APO/ATION: 1ater goes 'rom storage into the atmosphere