Oxygen Cycle

Quiz
•
Science
•
University
•
Hard
Standards-aligned
Claire Mendoza
Used 4+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
What percentage of the Earth's atmosphere is composed of oxygen?
78 %
21 %
10 %
5 %
2.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Which process releases oxygen back into the atmosphere during the oxygen cycle?
Respiration
Decomposition
Combustion
Denitrification
Tags
NGSS.MS-LS1-6
3.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Which organism(s) contribute(s) to the oxygen cycle by performing photosynthesis?
Animals
Bacteria
Plants and algae
Fungi
Tags
NGSS.MS-LS1-6
4.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
Which activity contributes to an imbalance in the oxygen cycle by increasing carbon dioxide levels in the atmosphere?
Decreasing nitrogen fixation
Deforestation
Increasing nitrogen fixation
Burning fossil fuels
Tags
NGSS.MS-LS1-6
5.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
What is the role of decomposers in the oxygen cycle?
They convert nitrogen into a usable form for plants.
They release oxygen during photosynthesis.
They release oxygen during respiration.
They break down dead organic matter, releasing oxygen.
6.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
What is the primary source of oxygen released during photosynthesis?
Nitrogen (N2)
Ozone (O3)
Carbon dioxide (CO2)
Water (H2O)
Tags
NGSS.MS-LS1-6
7.
MULTIPLE CHOICE QUESTION
30 sec • 2 pts
During photosynthesis, plants take in ________ and release ________.
a) Oxygen, carbon dioxide
b) Carbon dioxide, oxygen
c) Nitrogen, oxygen
d) Water vapor, carbon dioxide
Oxygen, carbon dioxide
Carbon dioxide, oxygen
Carbon dioxide, oxygen
Water vapor, carbon dioxide
Tags
NGSS.MS-LS1-6
NGSS.MS-LS2-3
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