Materiale si Tehnologii -Recapitulare Sem. I

Quiz
•
Other
•
7th Grade
•
Hard

Antonia Ciobanu
Used 5+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Ce sunt materialele?
Corpuri solide caracterizate prin luciu, conductibilitate termica si electrica.
amestecuri de doua sau mai multe componente, din care cel putin unul este metal si se afla in procentul cel mai mare.
un aliaj al fierului cu carbonul.
o modalitate prin care e face o nformatie cunoscuta.
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Proprietatile tehnologice ale materialelor metalice sunt:
elasticitatea si duritatea.
fluiditatea si meabilitatea, elasticitatea si duritatea.
meabilitatea, elasticitatea si sudabilitatea.
fluiditatea, meabilitatea, ductibilitatea si sudabilitatea.
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Aliajele sunt:
amestecuri de minim trei sau mai multe componente.
amestec de doua componente, dintre care niciunul nu e metal.
amestec dintre doua sau mai multe componente, dintre care un metal.
amestec dintre doua sau mai multe componente, dintre care doua sa fie metal.
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Proprietatile materiilor prime si materialelor din caucic sunt:
elasticitatea
rezistenta la rupere
duritatea
transparenta
imbatranirea
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Proprietatile sticlei sunt:
densitatea
rezistenta mecanica
transparenta
rezistenta chimica si termica
duritatea
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Proprietatile manuale ale metalului sunt:
elasticitatea.
elasticitatea si duritatea.
duritatea.
niciuna de mai sus.
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Materile prime la obtinerea sticlei sunt:
nisip cuartos
metal
calcar
soda calcinata
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