20 Questions
Which gas makes up the largest percentage of air?
Nitrogen
Which gas is responsible for turning hydrogencarbonate indicator from red to yellow?
Carbon dioxide
Which gas relights a glowing splint?
Oxygen
What happens to dry cobalt chloride paper when exposed to carbon dioxide?
It turns from blue to pink
What happens to limewater when exposed to carbon dioxide?
It turns from colorless to milky
What are the raw materials for photosynthesis?
Carbon dioxide and water
What are the products of photosynthesis?
Food (glucose) and oxygen
Where does photosynthesis take place?
Only in plants
What are the raw materials for respiration?
Food (glucose) and oxygen
What are the products of respiration?
Carbon dioxide and water
Which process is responsible for the net release of oxygen in plants during the daytime?
Photosynthesis
What is the main function of the human diaphragm?
To control breathing
Where does gas exchange occur in the human respiratory system?
Air sacs
What happens to oxygen in the air sacs during gas exchange?
It is released into the blood
What is the main cause of global warming?
Increasing carbon dioxide levels
What are common air pollutants that can cause respiratory issues?
Sulphur dioxide and suspended particulates
What does the AQHI measure?
Air quality
What does a higher AQHI index indicate?
Poorer air quality
What are the potential health effects of air pollutants?
Cancer and heart disease
What is the relationship between photosynthesis and respiration in maintaining the balance of carbon dioxide and oxygen in nature?
Photosynthesis produces oxygen and respiration produces carbon dioxide
Test your knowledge on the composition of air and its properties in this quiz on the Living Things and Air Unit. Explore topics such as the percentages of nitrogen, oxygen, carbon dioxide, and other gases in the atmosphere, as well as the various tests for oxygen and carbon dioxide.
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