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Going outside l.l 1.2 -l.3 1.4 -l.5 Different ploces to live Con we core for our environment? Our weother Extreme weother Check your progress B r0 12 14 Looking of rocks 2.1 Whot ore rocks? 2.2 Uses of rocks 2.3 Soil 2.4 Other noturol moteriols 2.5 Check your progress t6 IB 20 22 24 Chonging moteriols l Moteriols chonging shope 3.2 Bending ond twisting 3,3 Fontqstic elostic 3.4 Heoting ond cooling 3,5 Why is the seo solty? 3.6 Check your progress 26 28 30 32 34 36 :.=-:rl:'*!:g!;.9.r1s=, Light ond dork 4,1 Light sources 4.2 Dorkness 4.3 Moking shodows 4,4 Shodow shopes 4,5 Check your progress 3B 40 42 44 46 Electricity 5.-l Electricity oround us 5.2 Stoying sofe 5,3 Moking o circuit 5,4 Using motors ond buzzers 5.5 Switches 5,6 Check your progress The Eorth ond the Sun 6,1 Doy ond night 6,2 Does the Sun move? 6,3 Chonging shodows 6,4 Check your progress 4B 50 52 54 56 5B 60 62 64 66 Reference Glossory ond index 6B Acknowledgements 7B 72 : i t "' *t *q.1.*.a.4."" \;l )1 ll*1 113 ffi ,1; Whot onlmols ond plonts need to ,:;':,' , ;1 - ; :1,, ,,, , ,,,, .,,, ,., , ,.,,.,, different meosure [Lve? :;,,.:t ,a, ,,: : :,,,:4 ""$k ,,@iti".& I l;, i\Il l,il , ' y-r*!ql! i, t, zv, ,rff!,}t,,, xwffi ttr\il /rfb [r W ' \rl ' Looh ot the plctures Whtch anlmols ond ptonts [Lve ln each see !' envlronment? Whot dllferences uou J Compore two different ploces Go outside Looh Jor two ptoces thot are ,;1,*;'gl:,v,:',1'',,, , [i.he o wet place ond a dry place the two places Mahe sure theg ore the some slze Yt&x*xt,t,'{,i:; Whot gou frnd? Con Uou f,nd onu rT xxrzt* *rx:xt:x? the onlmals ond plonts Uou ftnd [n eoch place Compore them W*:r,q:r'** Whot hove Uou Jound out? What anlmals ond plonts l"i,ve Ln*th.esp envlronments? '*t *,t.\$2,$ )ta :frttp t _t'{r"" ?)t U., ,r'n ,,t'rr.,19.*- l|\l'l|'1,'w'n|.'* ' \t rr ,tt, ) t1,, : /.-rrr, x .rtt4 1' X ,.$ry t*rlt - ,*tt:* I 'Y "1 ' il \1 )1f rrr{r, tt i**}ta Envlronments can be dfJerent or slmllor DfJerent plonts and onlmats [i,ve in dilJerent envlronments Thts beoch [s covered wlth i,s flowlng lnto the sea liiter sewoge protect lttltrrawyy.ii-' .i ;J,ljJ,tr ,-.-,.,*4 ztl \.H: {r -r& Oo % -