water polluti

Multiple Choice

Why is groundwater less prone to pollution than surface water?

• It is filtered through layers of rock and sediment.

• It is protected by government regulations.

• It is always located far away from pollution sources.

• It is not used for agricultural or industrial purposes.

Multiple Choice

How many people worldwide lack access to safe drinking water? Approximately ________

• 1 billion (1/8)

• 2 billion (1/4)

• 3 billion (3/8)

• 4 billion (1/2)

Multiple Choice

Economic water scarcity means:

• A region has abundant clean water sources.

• Water is available but not safe or easy to access.

• Water is restricted to natural sources only.

• Water is scarce due to global warming.

Multiple Choice

Which factor does NOT contribute to uneven water distribution?

• Watershed size

• Proximity to the equator

• The amount of precipitation an area receives

• The Earth's rotation speed

Multiple Choice

What is physical water scarcity?

• Water is not safe to drink.

• Water is polluted by chemicals.

• There is no water nearby to access.

• Water is far away and expensive to transport.

Explanation Slide...

Dams help control floods by managing water flow through gates, allowing for the regulation of river levels and preventing overflow during heavy rains, rather than blocking the river completely or diverting water.

Multiple Choice

How do dams help in controlling floods according to the video?

• By blocking the river completely

• By releasing water only during dry seasons

• By controlling the flow of water through gates

• By diverting water to other rivers

Explanation Slide...

Dams help control floods by managing water flow through gates, allowing for the regulation of river levels and preventing overflow during heavy rains, rather than blocking the river completely or diverting water.

Multiple Choice

How do dams help in controlling floods according to the video?

• By blocking the river completely

• By releasing water only during dry seasons

• By controlling the flow of water through gates

• By diverting water to other rivers

Multiple Choice

Technology used at desalination plants can increase supplies of fresh water.

• True

• False

Multiple Choice

Which represents the distribution of water on Earth?

• 3% freshwater, 97% salt water
• 97% freshwater, 3% salt water
• 71% freshwater, 29% salt water
• 29% freshwater, 71% salt water

Multiple Choice

Water underground is stored in ____________.

• aquifers

• reservoirs

• wells

• depositories

Multiple Choice

The process where rain water soaks into the ground through soil and rocks is called __________.

• precipitation
• infiltration
• evaporation
• condensation

Multiple Choice

How do benthic macroinvertebrates indicate water quality?

• If pollution-intolerant organisms are found, quality is good.
  
• If pollution-intolerant organisms not found, water is poor.
• If pollution-tolerant organisms are found, quality is good.
• If any of these are found, water is of poor quality.

Multiple Choice

What is the most immediate effect of nitrate of phosphate pollution? 

• Increased algae growth
  
• Greater macroinvertebrate  diversity
• A decrease in decomposer activity.
• Decreased turbidity.

Multiple Choice

What is the best definition of desalination?

• Removing harmful chemicals from water

• Filtering dirty water

• Cleaning natural spring water

• Removing salt and minerals from sea water

Multiple Choice

The demand for water around the world is_________.

• decreasing

• increasing

• declining

• constant

Multiple Choice

What is the process called that removes salt from water to make more freshwater?

• irrigation

• desalination

• filtration

• infiltration

Multiple Choice

What is most groundwater in the US used for?

• industry

• drinking water

• producing electricity

• irrigation of crops

Reorder

The 3 main uses of freshwater in order are:

• agricultural uses

• industrial and manufacturing uses

• personal (residential) uses

1

2

3

• 1
• 2
• 3

Multiple Choice

Surface water depletion is caused by

• drip irrigation

• damming rivers

• drought and overuse

• groundwater mining

Multiple Choice

When a river is dammed, a(n) _____ forms.

• tributary

• reservoir

• aquifer

• watershed

Multiple Select

Total area of land that flows into a particular river

• Watershed

• Watershed Basin

• Drainage Basin

• Water Basin

Multiple Choice

Flat valley land next to a stream channel.

• Floodplain

• Great Plains

• Wetlands

• Swamps/Marshes

Multiple Choice

What are some threats to estuaries?

• Increased algal blooms

• Contamination

• Pollution

• All of the above

Multiple Choice

An underground layer of rock or sediment that holds water?

• Reservoir
• Aquifer
• Groundwater
• Watershed

Multiple Choice

Please evaluate the riparian zone.

• Ideal riparian zone

• Damaged riparian zone

• Repairing the riparian zone

Multiple Choice

Evaluate the riparian zone illustrated above.

• Ideal riparian zone

• Damaged riparian zone

• Repairing the riparian zone

Multiple Choice

Which of the below is NOT a cause of water pollution?

• Pesticides and herbicides

• Sewage

• Construction

• Saltwater

Multiple Choice

The global water crisis refers to...

• The fact that more than 1 billion people on Earth don't have access to clean water.

• Glaciers melting because of climate change.

• The fact that there is more saltwater on Earth than freshwater.

Multiple Choice

Which is a cause of the global water crisis?

• Overpopulation

• Overconsumption

• Water pollution

• All of these are causes

Multiple Select

Select TWO ways that water pollution can hurt the environment.

• Oil spills can harm marine life and destroy marine habitats.

• Water is distributed to people's homes through a system of wells and pipes.

• Water leaches from upper layers of soil to lower layers of soil.

• There can be so much pollution in water that fish can't get enough oxygen and they suffocate.

Multiple Choice

What is potable water?

• Water that is safe to drink

• Frozen water

• Liquid water

• Dirty water

Multiple Choice

Which is NOT an example of point source pollution?

• Gulf Oil Spill

• Factory waste runoff

• Nutrient runoff from farms

• Sewage pipe drain into Ches Bay

Multiple Choice

Animal wastes that runoff into water is an example of which types of pollution?

• bacterial & chemical 
• chemical & sediment
• nutrient & bacterial 
• sediment & nutrient

Multiple Choice

Eutrophication is caused by

• excess nutrients building up in the water.

• industrial point-source pollution.

• unlined landfills and septic tanks.

• wastewater from homes mixing with drinking water.

Multiple Select

The two critical nutrients in eutrophication are... (select two)

• nitrates

• phosphates

• carbon dioxide

• dissolved oxygen

Multiple Choice

Which would most likely happen if too many nutrients entered an estuary?

• Nutrients would be used up by the fish and plants, keeping the estuary in balance.

• Algal blooms would lower dissolved oxygen levels, causing fish to suffocate.

• Algal blooms would decrease, leaving few food resources for fish.

• Nutrients would sink to the bottom, increasing soil deposition.

Multiple Select

What can be a source of nitrates for eutrophication in rivers?

• fertilisers

• plastic bottles

• paper

• sewage

Multiple Choice

In eutrophication, what does 'algal bloom' refer to?

• The rapid increase in the number of bacteria

• The rapid increase in the number of plants

• The rapid decrease in the number of fish

• The rapid increase in the amount of nitrates in the river

Multiple Choice

What is a watershed?

• Watershed is when water runs down a hill

• watershed is when runoff and groundwater drain into a body of water.

• watershed is when water falls from the sky

Multiple Choice

Dirt and soil that washes into rivers is called

• Gross Pollution

• Sediment

• Pathogens

• Point Source Pollution

Multiple Choice

Asphalt (roads, driveways, etc.)

• permeable surfaces

• impermeable surfaces

Multiple Choice

Which land surface has the most stormwater runoff?

Multiple Choice

Rain or meltwater that doesn't soak into the ground and flows over the Earth's surface is called

• stormwater runoff

• precipitation

• infiltration

• groundwater