Sademed

1. Võrdle vihma ja lume tekkimist?

Vihm tekib, kui .......................................................................................................
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2.Võrdle, millist kasu tekitavad Maale vihm ja lumi!

Vihm Lumi
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3.Kas sademed võivad põhjustada loodusele kahju?Kuidas?
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4. Miks näib värskelt mahasadanud lumi puhas ja valge, kuid kui seesama lumi ära sulatada, pole lumevesi ometi puhas?
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5. Kuidas mõjutab õhusaastus sademeid?
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6. Kas pilved mõjutavad elu Maal?Selgita, kuidas!
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