2.1 biogeochemical cycles

Front

What is an isolated system?

Back

An isolated system is one where there is no exchange of mass or energy with the surroundings.

Front

What is the largest reservoir for nitrogen on Earth?

Back

The atmosphere is the largest reservoir for nitrogen.

Front

What is conduction?

Back

Conduction is the transfer of heat through a material without the movement of the material itself, such as eggs cooking in a hot pan.

Front

What is capillary action?

Back

Capillary action is the ability of water to flow against gravity, due to its cohesive and adhesive properties.

Front

Why does ice float on water?

Back

Ice floats on water because it is less dense than liquid water.

Front

What is a biogeochemical cycle?

Back

A biogeochemical cycle is the movement of elements and compounds through living organisms and the physical environment.

Front

What role do bacteria play in the nitrogen cycle?

Back

Bacteria are essential in the nitrogen cycle for processes like nitrogen fixation and nitrification.

Front

What is the water cycle?

Back

The water cycle is the continuous movement of water through evaporation, condensation, precipitation, and infiltration.

Front

What is the carbon cycle?

Back

The carbon cycle is the process by which carbon is exchanged among the atmosphere, land, water, and living organisms.

Front

What is the significance of photosynthesis in the carbon cycle?

Back

Photosynthesis allows plants to absorb carbon dioxide from the atmosphere and convert it into organic matter.