DLA 4

All water eventually empties into

• an ocean

• a river

• the ground

• a lake

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

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

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

How could an underground storage tank that stores gasoline accidentally pollute the groundwater?

• The tank or its pipes could crack and leak, and gas can percolate down to the groundwater

• Gas that is pumped out can drip onto the concrete and get washed away by rain runoff

• Gas fumes from the tank can leak out and get into the air

Bacteria is one of the main pollutants of concern in our watershed. What is the source of most pathogenic (harmful) bacteria that gets into our waters?

• Animal feces or human sewage

• Trash

• Fertilizers

What is all the water that runs off the surface of the land and washes into rivers, streams, and other waterways called?

• Runoff
• Storm Drain
• Surface Water
• Tributary

What occurs when used engine oil is poured into the pit in the ground?

• The oil remains sealed in the small disposal pit and does not affect the groundwater.

• The oil seeps through the soil until it leaks into the groundwater

• The oil seeps through the soil but stops before it reaches the groundwater

• The oil creates a barrier in Mrs. Dyess' room

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.

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

• polluted runoff into nearby ponds.

• flooding in the local aquifer.

• weakened housing foundations.

• over-treated drinking water.

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.