Texas Ecoregions -- Weathering, Erosion and Deposition

Texas Ecoregions -- Weathering, Erosion and Deposition

Multiple Select

What are the determining characteristics of an ecoregion?

• Topography

• Plants

• Animals

• Environment

• Rivers

Multiple Choice

Texas ecoregions are constantly changing due to natural and human impacts. What characteristic, we have studied, can increase an ecosystem's ability to withstand change?

• Survival of the Fittest

• Photosynthesis

• Natural Selection

• Biodiversity

Multiple Choice

What is the process that picks up and moves weathered rocks?

• Erosion
• Landslide
• Weathering

Multiple Choice

The process that breaks down rocks and other materials on Earth's surface is called

• Weathering

• Erosion

Multiple Choice

Salt water eats away at rock

• Mechanical Weathering

• Chemical Weathering

• Erosion

• Deposition

Multiple Choice

Wind blows sand into the desert where it collects in giant piles called sand dunes

• Mechanical Weathering

• Chemical Weathering

• Erosion

• Deposition

Multiple Choice

Rain washes away dirt from a hillside

• Mechanical Weathering

• Chemical Weathering

• Erosion

• Deposition

Multiple Choice

Wind blows sand onto rocks and slowly breaks down the rock

• Mechanical Weathering

• Chemical Weathering

• Erosion

• Deposition

Multiple Choice

Plants prevent soil erosion by-

• holding dirt in place with their roots

• providing food for herbivores

• the process of photosynthesis

• releasing water into the atmosphere through transpiration

Multiple Choice

The picture shows part of the Piney Woods ecoregion in east Texas.

Which of the following best explains the lack of extremely diverse landforms in this ecoregion?

• The high vegetation decreases erosion from water and wind.

• The high amount of vegetation soaks up most of the corrosive water into their leaves.

• The trees broke down all of the previous landforms through weathering.

• The trees in this region hide the diverse landforms underneath them.

Multiple Choice

The Blackland Prairie ecoregion of Texas has many exposed boulders that are smooth and rounded. What feature of this area caused the boulders to take on these characteristics?

• Moving glaciers

• Wind-blown sand and rain

• Wave and current actions

• Deep and rapid rivers

Multiple Choice

Located in Central Texas; Dallas/ area; dark clay and tall grasses (yellow on map)

• Blackland Prairies

• Rolling Plains

• Piney Woods

• Pecos

Multiple Choice

The Gulf Prairies and Marshes ecoregion experiences significant soil erosion. One would expect the climate in this region to be –

• dry and hot.

• cold and snowy.

• wet and rainy.

• warm and humid.

Multiple Choice

Located near the southern part of Texas; contains mostly thorny brush and grass.

• Oak Wood an Prairies

• Gulf Coast Prairies and Marshes

• Llano Uplift

• South Texas Brush Country

Multiple Choice

In the Edwards Plateau, the limestone rocks are highly

vulnerable to chemical and physical weathering. Which of the following land formations would be expected in this area?

• Canyons

• Lakes

• Rivers

• Caves

Multiple Choice

Located in the middle of Texas; contains mostly oaks, hickory, and large domes.

• Edwards Plateau

• High Plains

• Coastal Plains

• Llano Uplift

Multiple Choice

The Rolling Plains region of Texas has a number of deep

canyons. One would expect this region to have -

• Moving glaciers

• Volcanoes

• Flowing rivers

• High wind

Multiple Choice

The Texas High Plains region does not receive much rain. It is reasonable to predict that this region, compared to other ecoregions, would have -

• less soil erosion.

• larger river deltas.

• many mountains.

• sandy beaches.

Multiple Choice

The illustration provided shows exposed layers of

sedimentary rock in the High Plains region of Texas. Which of the following best explains the uneven nature of the exposed rock layers?

• Different types of rock weather at different rates when exposed.

• Wind speeds vary greatly over time in this region of Texas

• An ancient river deposited sediments at different rates over time.

• Glacier movement always creates uneven rock formations.

Multiple Choice

What Catastrophic Event in the panhandle plains causes the most wind erosion?

• Hurricanes

• Tornadoes

• Flooding

• Humans