Earth's Systems and Processes Quiz

Earth's main systems include:

• Biosphere, Atmosphere, Geosphere, Cryosphere

• Hydrosphere, Ionosphere, Troposphere, Lithosphere

• Biosphere, Atmosphere, Hydrosphere, Lithosphere

• Stratosphere, Exosphere, Thermosphere, Biosphere

The atmospheric layer closest to the Earth's surface is called the:

• Stratosphere

• Troposphere

• Mesosphere

• Thermosphere

In the biosphere, matter and energy flow through:

• Hydrosphere

• Lithosphere

• Nitrogen cycle

• Food chains/webs

The process by which carbon moves from the atmosphere to living organisms and back is called:

• Carbon footprint

• Carboniferous cycle

• Carbon sequestration

• Carbon cycle

The process that converts nitrogen gas into compounds that plants can absorb is called:

• Nitrogen fixation

• Nitrogen assimilation

• Nitrogen transpiration

• Nitrogen respiration

The natural greenhouse effect is primarily caused by the trapping of:

• Carbon dioxide

• Methane

• Heat

• Nitrous oxide

The greenhouse effect leads to:

• Global cooling

• Increased biodiversity

• Increased average temperature

• Lower sea levels

Ozone is a molecule composed of:

• Two oxygen atoms (O2)

• One oxygen atom (O)

• Three oxygen atoms (O3)

• One nitrogen atom (N) and two oxygen atoms (O2)

The ozone layer plays a crucial role in:

• Regulating greenhouse gases

• Filtering harmful UV radiation

• Maintaining oxygen levels

• Preventing global warming

CFCs (chlorofluorocarbons) primarily affect the ozone layer by:

• Increasing ozone production

• Binding with ozone molecules

• Releasing excess oxygen

• Depleting ozone molecules