Year 9 Earth Science Quiz

The carbon cycle involves interactions between:

• Earth’s spheres, such as the biosphere and atmosphere

• Earth’s layers and the ozone layer

• Fossil fuels and firestick farming only

• Plants, animals, and the Sun’s energy directly

Which of the following processes releases carbon into the atmosphere?

• Respiration

• Photosynthesis

• Carbon sequestration

• Feeding

Carbon dioxide is removed from the atmosphere through:

• Photosynthesis

• Respiration

• Combustion

• Decomposition

Fossil fuels are formed primarily from:

• Ancient organic matter under pressure

• Decaying leaves and soil

• Rapid volcanic eruptions

• Combustion reactions

What long-term consequence arises from altering the carbon cycle?

• Accelerated global warming and climate change

• Immediate cooling of the atmosphere

• Stability of atmospheric carbon levels

• Rapid carbon sequestration in the oceans

Which Earth process stores carbon in biomass?

• Photosynthesis

• Combustion

• Fossil fuel formation

• Volcanic activity

One key outcome of the enhanced greenhouse effect is:

• Warming of Earth's surface temperatures

• Decreased biodiversity in the biosphere

• Increased reflection of solar energy into space

• Slower carbon cycling between spheres

Which of these describes a stable carbon store?

• Deep oceans

• Surface oceans

• Atmosphere

• Vegetation

The movement of carbon between the geosphere and atmosphere can be triggered by:

• Volcanic eruptions

• Firestick farming

• Soil respiration

• Decomposition

Identify the gas most associated with the greenhouse effect:

• Carbon Dioxide

• Nitrogen

• Oxygen

• Helium