Carolyn Hickey Human Impact on Watersheds

The use of pesticides and fertilizers must be 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 chemicals 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.

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

What is a watershed?

• Land that collects and channels water froma small body of water to a larger body of water
• the shape of the land determined by elevation
• A natural stream of water of considerable  volume
• a river and all its tributaries

Tags

NGSS.MS-ESS2-4

Why is gravity a factor in watersheds? 

• it causes the water to flow away from a watershed
• it causes the water to flow down towards a watershed

Tags

NGSS.MS-ESS2-4

What is Point Source Pollution (PSP) ?

• When you cannot trace the direct source of pollution
• When you can trace the point of the source - "pipe to source"

A lake that stores water for human use is called a ____________.

• dam
• oxbow lake
• reservoir
• crater lake

The build up of nutrients in a lake is a process called ________________.

• eutrophication
• volcanic eruption
• algae buildup
• pond death

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

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.

Tags

NGSS.MS-ESS3-3

NGSS.MS-LS2-4

A industrial powerplant dumps its heated wastewater straight from a pipe into a stream. This is an example of -

• eutrophic pollution
  over-treated drinking water.
• riparian pollution
  flooding in the local aquifer.
• point source pollution.
• nonpointsource pollution.

Tags

NGSS.MS-ESS3-3

What is a watershed?

• Water in an area
• Water that flows into a river or stream
• Land that water flows over and through
• Water that is salty

Tags

NGSS.MS-ESS2-4

Pollutants from a highway enter a stream or creek and travel to a river. River water tested with the pollutant found is called  

• point source pollution
  Available space for crops
• nonpoint source pollution.
• eutrophic pollution
• riparian pollution

Tags

NGSS.MS-ESS3-3