Fresh Water Chapter 1 Water and Atmosphere

Lesson 1: Water on Earth

Which process is visible in the fog? What about in the clouds?

Evaporation can be used to harvest salt. Can you explain why?

Evaporation from a power plant. Which state change is occurring here?

What is this varied process?

Which processes are occurring?

This is a diagram of …

Groundwater Usage and Contributions

Many organisms live in aquatic environments…

The Water Cycle is as simple as this…

Lesson 2: Surface Water

Lake Hopatcong, which was created by damning two ponds, is the largest lake in New Jersey.

Lake Hopatcong is an example of  A reservoir  A reservoir is a manmade lake created by building a dam. The reservoir is a way to store water for human use.  Other types of lakes include volcanic lakes, glacial lakes, and rift valley lakes (p.15).

Types of Lakes The Great Lakes = Glacial LakesCrater Lake = Volcanic Lake in Oregon

What are the differences between a lake and a pond?  Ponds are shallow bodies of still water.  Sunlight reaches the bottom allowing plants to grow.  Plants, bacteria and algae share the ecosystem with small animals.  Lakes are deeper bodies of still water.  Sunlight does not reach the bottom and lakes are colder than ponds.  Larger fish and organisms can survive in lakes. Bacteria and algae are also present.

Lake are dynamic features on Earth’s surface. What is lake eutrophication?

 is the process of nutrients (nitrogen and phosphorus) building up in a lake. The nutrients cause an algal bloom (population explosion), which forms a thick layer on the surface of the lake. The algae block sunlight preventing photosynthesizing organisms from the sun. This creates a shift in the food webs and ecosystems of the lake. Dead organisms, nutrients, and sediments begin to fill in the lake. Over time the lake fills in and becomes a meadow. Lake eutrophication

Lake eutrophication is a natural process which takes centuries. What has the lake below become?

 Fertilizer runoff from agriculture, golf courses, and lands developed for homes.  Poor land usage practices can lead to topsoil runoff.  Inorganic waste from factories and cities.  Excess sediments runoff from mining or from deforestation. How could humans impact lake eutrophication?

Cultural eutrophication is a much faster process and is driven by manmade factors.

Name the elevated landform between the two rivers.

What does a divide separate?

What is a watershed?  Also called a drainage basin, a watershed is land that supplies water to a river system. Smaller tributaries feed the larger rivers making up the river system.

Where is the closest watershed?  Right outside your doorstep!

 Look at the map on p.12 of your textbook.  Identify the major watersheds in the United States.  Which landform is the divide separating New Jersey from those major watersheds?  We need a different map to investigate New Jersey’s watersheds. Watersheds

Major NJ Rivers

What is our watershed address?  New Jersey’s five watershed regions and major waterways (click) New Jersey’s five watershed regions and major waterways (click)  (or click here for online link)here

Great Egg Harbor Watershed Watershed Region: Atlantic Coastal NJ Watershed Management Area #15

Why is it important to protect your watershed?