WorksheetsEnvironmental Science Quiz
Total questions: 15
Worksheet time: 8mins
What does the Keeling Curve measure?
Nitrogen levels in the atmosphere
Global temperature changes
Atmospheric CO₂ concentration
Water vapour in the atmosphere
Where were the measurements for the Keeling Curve first taken?
Greenland
Antarctica
Mauna Loa, Hawaii
The Amazon Rainforest
Why does the Keeling Curve show an annual oscillation?
Changes in ocean currents
Seasonal photosynthesis cycles in plants
Volcanic eruptions
Variations in solar radiation
What long-term trend does the Keeling Curve indicate?
Decline in atmospheric CO₂
Stable levels of CO₂
Increase in atmospheric CO₂
No observable trend
Which of the following is a carbon sink?
Volcanic eruptions
Deforested land
Oceans
Combustion engines
How is carbon primarily returned to the atmosphere from living organisms?
Photosynthesis
Respiration
Sedimentation
Fossilisation
Which human activity most significantly disrupts the carbon cycle?
Urbanisation
Burning fossil fuels
Mining metals
Desalination
What is the primary driver of the water cycle?
Wind currents
Solar energy
Gravity
Earth's magnetic field
Which process in the water cycle directly contributes to cloud formation?
Evaporation
Precipitation
Transpiration
Condensation
Which reservoir holds the majority of Earth's water?
Rivers
Glaciers
Oceans
Groundwater
Which process converts nitrogen gas into ammonia?
Denitrification
Nitrogen fixation
Nitrification
Ammonification
Which organisms are primarily responsible for nitrogen fixation?
Plants
Fungi
Bacteria
Insects
What happens during denitrification?
Nitrogen gas is converted to ammonia
Nitrates are converted to nitrogen gas
Ammonia is converted to nitrates
Nitrogen is absorbed by plants
Which greenhouse gas has the highest global warming potential (GWP) per molecule?
Carbon dioxide (CO₂)
Methane (CH₄)
Water vapour (H₂O)
Nitrous oxide (N₂O)
What is the main consequence of ocean acidification?
Increased biodiversity in coral reefs
Decreased ability of marine organisms to form shells
Enhanced oxygen levels in water
Faster evaporation of ocean water
