unitat 9 medi
TRANSCRIPT
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Unitat 9Màquines que ens ajuden
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FerramentesNecessiten la força de les persones
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tisores
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martell
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maquineta de fer punta
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clau fixa
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corró
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granera
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barrina
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obridor
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tornavís
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serra
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tisores de podar
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alicates
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pinces
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MàquinesNecessiten l'energia
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ordinador
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llavadora
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espremedora
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batedora
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nevera
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aspiradora
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ventilador
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llavaplats
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microones
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forn
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màquina de perforar
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màquina de cosir
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assecador
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Parts de les ferramentes
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moll
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fulla
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mànec
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cadena
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pedal
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Màquines i ferramentes
senzilles
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pinces
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clau fixa
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Màquines i ferramentes complexes
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ordinador
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llavadora
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Energia elèctricaProporciona:
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llum
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moviment
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fred
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Màquines que funcionen amb força
animal
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carro
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trineu
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Màquines que funcionen amb
combustible
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cotxe
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serra elèctrica
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Màquines que funcionen amb
electricitat
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llavaplats
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aspiradora