1. Katera kovina je pri sobni temperaturi v tekočem stanju?
TIT8-Kovine

Quiz
•
Science
•
8th Grade
•
Hard
Brigita Horvat
Used 49+ times
FREE Resource
12 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
živo srebro
baker
aluminij
cink
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2.Katera kovina ima največjo trdoto in katera najmanjšo?
Največjo trdoto ima baker, najmanjšo pa volfram.
Največjo trdoto ima aluminij, najmanjšo jeklo.
Največjo trdoto ima jeklo, najmanjšo pa aluminij in svinec.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3.Kako se imenuje toplotna obdelava, ki se izvaja z namenom, da izdelkom povečamo trdoto.
varjenje
brušenje
kaljenje
vrtanje
4.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
4.Kako lahko površinsko oplemenitimo kovine?
barvamo
vijačimo
plastificiramo
lakiramo
kalimo
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
5.Postopek ločevanje rud od jalovine in drugih snovi imenujemo:
žilavljenje
separacija
izkopavanje
kaljenje
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
6.Industrijsko dejavnost, ki se ukvarja s pridobivanjem kovin iz rude ter njihovo nadaljnjo uporabo imenujemo:
arheologija
rudarstvo
kromiranje
metalurgija
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
7.Kje pridobivajo surovo železo ali grodelj?
v rudniku
v plavžu
v zemeljski skorji
v elektrarni
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