Hydrologic, Carbon, and Nitrogen Cycles

The flow of water from land into a body of water.

• groundwater
• headwaters
• run-off
• infiltration

97% of the water on earth is _________, making it undrinkable for humans.

• fresh water
• ground water
• salt water
• surface water

The hydrologic cycle is a continuous process driven by energy from the ...

• Moon.
• Sun.
• gravity.
• Earth's interior.

Tags

NGSS.MS-ESS2-4

What is it called when plants give off water vapor as a waste product?

• condensation
• evaporation
• sublimation
• transpiration

Humans are disrupting the carbon cycle in ways that have resulted in increased levels of carbon dioxide in our atmosphere. Which of the following human activities are most directly responsible for this increase?

• I. Deforestation and the clearing of plants that absorb carbon dioxide through photosynthesis.

• II. The addition of larger amounts of carbon dioxide into the atmosphere by burning fossil fuels (coal, oil, natural gas).

• III. The production of cement.

• I and III only

• I, II and III

The release of this element into the atmosphere is due, in large part, to fossil fuel combustion and deforestation.

• Sulfur

• Nitrogen

• Carbon

• Phosphorus

• All of the above cycles.

Which of the following has shifted the storage of carbon from sediment to the atmosphere?

• Mining of coal

• Combustion of fossil fuels

• Increased occurrence of acid precipitation

• Extraction of crude oil

• Industrial smog

the arrows from the plants TO the atmosphere represent this process

• transpiration

• decomposition

• photosynthesis

• cellular respiration

• precipitation

Which one of these does not add CO₂ to the atmosphere?

• cooking with gas

• planting trees

• burning wood

• riding in a bus

When humans burn fossil fuels, most of the carbon quickly enters the                       as carbon dioxide.

• Water
• Atmosphere
• Sun
• Air

Tags

NGSS.MS-ESS2-1