Rivers and Streams

Plants living in moving water have:

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

• Are tiny, free-floating species of algae, and are the food base of the ecosystem

• Are tall because they have greater support, enabling them to rise above other plants to reach the sun

• None of the above

Tags

NGSS.MS-LS1-5

What does this image show?

• Oxbow Lake

• Headwaters

• Runoff

• Delta

Tags

NGSS.MS-ESS2-4

Wide, flat, border areas along rivers and streams where flood waters spill out at times of high flow.

• watershed

• estuary

• floodplains

• abiotic

The load of the river is all the materials carried by the water

• True

• False

Tags

NGSS.MS-ESS2-4

Land that supplies water to a river system.

• wetlands

• watershed

• estuary

• river system

Tags

NGSS.MS-ESS2-4

Predict the impact of flooding on the organisms in a stream ecosystem.

• Some fish, plants or other aquatic life could be washed downstream.

• It will promote subsequent growth of wetlands plants and animals once floodwaters recede.

• Fresh nutrients would be brought in.

• All of the above

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Predict the types of organisms in a fourth-order stream.

• Few rooted plants grow because the water is too deep and very cloudy; there are more collectors than shredders. Example: black willow, smartweed, buttonbush, cottonwood, sycamore, mayfly, gilled snail, stonefly, crayfish, green sunfish, creek chub and fathead minnow.

• Both rooted and floating aquatic plants and many types of animals have a niche in which to live. Example: algae, water willow, coontail, sycamore, mayfly, snail, crayfish, damselfly, scud, channel catfish, bluegill, largemouth bass and gar.

• There is little aquatic plant growth; animals depend on what falls or is washed into the stream.

• None of the above.

Tags

NGSS.MS-LS2-1

Sculpins and many darter species are adapted as bottom clingers. They:

• Have streamlined bodies that allow them to remain stable in currents

• Have flattened heads and large pectoral fins that are angled to help them stay on the bottom in swift currents

• Have upturned eyes and mouths to slurp down mosquito larvae

• None of the above

Tags

NGSS.MS-LS4-4

The start of a river is called the what?

• River summit

• River source

• River start

• River mouth

Tags

NGSS.MS-ESS2-4

A natural stream of water is called a

• spring

• river

• lake

• ocean