River, Streams, Lakes and Ponds

Rivers & Streams

100

What is a Euphotic Zone?

1. An area of water that gets some sunlight and can support a variety of species

200

During heavy rains vegetation along the banks can help reduce ___________________

Erosion

300

The deepest part of a stream is called the...

What is the channel

400

How would heavy rains affect a stream’s velocity?

Increase it by increasing the volume

500

Where on a river bend does erosion occur?

On the outside of the bend

Lakes & Ponds

100

Name one role lakes play in the economy

drinking water, recreation, industry

200

What are two difference between lakes and ponds

small, light penetration, depth

300

1. What is the base for a lake ecosystem food web?

phytoplankton

400

Where is lake water the coldest?

1. At the bottom (Hypolimnion Zone)

500

What is the only natural lake in Texas?

Caddo Lake

Adaptations

100

Bird building a nest is an example of which type of adaptation?

behavioral

200

1. What is an example of an adaptation of organisms living in fast flowing water?

1. long flexible stems

2. streamline bodies

3. burrow in the sand

300

Plants living in moving water have:

What is 

1. Long, thin, flexible stems that offer little resistance to the current and strong root systems to hold them in place 

400

1. What do plants need to survive? 

CO2, Water, Sunlight 

500

These types of animals are characterized by how they get their food: an aquatic invertebrate that has a special mouthparts they use to remove algae or other food material growing on the surface of plants or solid objects

scrapers

Lake Zones

100

1. The area of the lake away from shore, open water called

Limnetic Zone

200

1. The area at the bottom of the lake where bacteria and other decomposers is called

Benthic Zone

300

1. The area of the lake from the shoreline outward to the point sunlight no longer reaches the bottom is called (rooted plant growth occurs in this area)?

Littoral Zone

400

This zone is the most productive

littoral zone

500

this zone is loaded with decomposers

benthic zone

Random

100

Most rivers in Texas are controlled by

Dams

200

Why are plants important to stream health

1. A source of  pollution

2. Increase  erosion

3. Regulate temperature by providing shade 

4. Decrease dissolved oxygen 

300

All living organisms are made of which element?

carbon

400

Riparian Zones have two roles in a stream/river ecosystem. What are they?

Filter pollutants, stabilize shorelines

500

1. What effect does building on a flood plain have on flooding?

increases flooding