Hydrosphere review

Why must humans clean water before using it? 

• Humans are unable to digest untreated river water
• River water is free of any contaminant or pollutants
• Untreated river water is brown and humans prefer clear water
• Clear water may contain contaminants that could harm humans
  

Why is nitrogen gas important to the health of the ocean and its organisms?

• It is needed to make amino acids, proteins, and DNA
  
• It is the main gas needed for photosynthesis
• is needed to produce energy during cellular respiration
• Hard-shelled organism need it to make their shells.

All water on Earth's surface

• Water Cycle

• Evaporation

• Hyrdospehre

• Run off

Variety of ways liquid water moves across land

• Groundwater

• Transpiration

• Percolation

• Runoff

How water is exchanged through Earth's land, ocean, and atmosphere

• Condensation

• Water Cycle

• Runoff

• Hydrosphere

The tendency of dissimilar particles or surfaces to cling to one another

• Water Conservation

• Cohesion

• Adhesion

• All of the above

The quality of being cloudy, opaque, and thick with suspended matter

• pH

• Turbidity

• Stewardship

• Erosion

The process that improves the quality of water to make it appropriate for a specific end-use

• Water quality

• Water Treatment

• Run off

• Percolation

How does the use of a pH meter help monitor the hydrosphere? 

• by indicating whether the water is too acidic or basic
• by indicating if there is too much sediment in the water 
• by indicating whether microorganisms are living in the water
• by indicating if there is enough dissolved oxygen in the water

Why do large numbers of ocean life-forms live near areas of upwelling?

• Upwelling brings nutrients to the surface.
• Upwelling brings warm water to the surface
• Upwelling helps push small fish up toward the surface
• D. Upwelling keeps large predator fish away from the surface