Earth History and Hydrosphere

 Which would most likely result in an unhealthy aquatic habitat?

• a decrease in turbidity
• a decrease in nitrates levels
• an increase in water temperature
• an increase in dissolved oxygen levels

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

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which of the following could occur as the result of runoff of high nitrogen fertilizers from farmlands near a lake?

• an increase in algae growth resulting in low oxygen levels in the lake
• a decrease in mineral storage reducing carbon levels of the lake
• a decrease in pollution resulting in lower ozone levels in the lake area 
• an increase in deforestation reducing animal populations in the lake area

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Which is the main source of dissolved oxygen in a body of water?

• erosion

• the atmosphere

• volcanic eruptions

• plants

Which would most likely cause a sudden increase of nitrates in a waterway?

• point source spill from an oil tanker

• non point source runoff from a boat yard

• non point source runoff from a golf course

• point source discharge from a chemical plant

Which is an unlikely source of water for a river basin?

• melting snow

• ocean water

• melting ice

• rain

Tags

NGSS.MS-ESS2-4

Of the 74% of Earth’s surface that is covered in water, which contains the most water? 

• lakes 
• rivers 
• oceans 
• streams 

Which is Earth’s largest source of drinkable water?

• lakes 
• rivers 
• oceans 
• aquifers 

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

Which most likely has the highest number of contaminants in the water?

• a water system with moderate turbidity
• a water system with high turbidity
• a water system with low turbidity
• a water system with no turbidity

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