Aerul. Apa. Solul
Quiz
•
Chemistry
•
7th Grade
•
Practice Problem
•
Hard
Giurgea Gabriela
Used 11+ times
FREE Resource
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16 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Compozitia aerului:
78% azot, 21% oxigen, 1% alte gaze
78% oxigen, 21 % azot, 1 % alte gaze
78% oxigen, 21% dioxid de carbon, 1% azot
2.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Aerul:
mentine viata pe Pamant
este utilizat in procesele de ardere
este utilizat la obtinerea oxigenului, azotului, gazelor rare
este utilizat la obtinerea magnetilor
3.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Surse de poluare artificiale:
emanații vulcanice
gaze de eșapament
resturi vegetale
erbicide
4.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Surse de poluare naturale:
emanații vulcanice
gaze de eșapament
resturi vegetale
erbicide
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Poluanții:
sunt substanțe solide
sunt substanțe lichide
sunt substanțe gazoase
produc modificări climatice
6.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Solul:
este un amestec omogen
conține sustanțe minerale
conține apă în care sunt dizolvate săruri minerale
este mediul in care se dezvoltă plantele
7.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Substanțele minerale ce se găsesc în sol sunt:
calcar
sare
minerale feroase
hidrogen
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