Watershed/WED

When fertilizers enter surface water, they cause problems in 
the watershed by -

• increasing the amount of nutrients available to fish in lakes and streams.
• 
  clogging narrow streams and preventing water from flowing properly.
• raising the water level in nearby rivers to levels leading to flooding.
• causing rapid algal growth that decrease oxygen levels and choke aquatic life.

Pollutants from a factory that enter the water in a watershed 
will have a negative effect on which of the following?

• 
  Available space for crops
• Local pond life
• Rainfall rates
• Direction of river flow

The use of pesticides and fertilizers is carefully monitored 
because of the effect they can have on the environment. 
Which of the following is a possible negative effect of the use 
of these chemical on the environment?

• Runoff carries these chemicals into lakes and streams.
• Theses chemicals cannot be purchased in large bulk.
• 
  These chemicals are expensive to produce.
  
• Storage space for these chemicals is limited.

The illustration provided shows a river and four cities on that river. When the water from the river was sampled at location X, it was determined to be polluted with various chemicals. What would be the most likely source for this pollution?

• City 1 and City 2
• City 2 and City 3
• City 3 and City 4
• City 1 and City 4

Overflow during a heavy rainstorm from a wastewater treatment plant would result in -

• 
  over-treated drinking water.
• 
  flooding in the local aquifer.
• polluted runoff into nearby ponds.
• weakened housing foundations.

The water that fills lakes and rivers

• groundwater
• surface water
• water table
• saturated zone

Water stored  in cracks and pores below the Earth's surface is called:

• Groundwater
• Bogs
• Water in the ground
• surface water

An area of permeable layer of rock or soil that holds a large amount of water in the saturated zone is called what?

• Aquifer
• Spring
• Well
• Reservoir

Sand is ___________, meaning that water can pass through easily.

• Permeable
• Impermeable
• Solid
• Soft

If a person dumps oil down the drain by their home (even miles away), it can end up in far away places like a bay or ocean.

• True

• False