WorksheetsUnit 8 Review questions
Total questions: 9
Worksheet time: 5mins
The rock formation called the Lighthouse is unusual because of its rock layers. It is located in Palo Duro Canyon in the panhandle of Texas near Amarillo. What statement best explains what happened over time to form this rock formation?
The Lighthouse formed over time because the rock that makes up the structure is harder than the surrounding rock that eroded.
The Lighthouse formed over time because of the action of an ancient volcano
The Lighthouse formed over time because repeated flash floods washed looser rocks away.
The Lighthouse formed over time because the root systems of desert plants protected the rock layers from erosion.
A rocky cliff in the high mountains has areas of rocks like the ones below. Which process is most likely to cause the rocks to break apart?
chemical weathering
deposition of sediments
physical weathering
wind erosion
The map shows some features of the Gulf Coast region of Texas.
Which features formed mainly through the process of deposition
the curving coastline
the meandering river beds
the narrow barrier islands
the natural harbors
Big Bend National Park, located in the Trans-Pecos region of West Texas, is popular with hikers. Many of the park's trails have warning signs about the danger of injury or death from flash floods. The graph shows the monthly average precipitation in the park.
What is the month when flash floods are most likely to occur?
October
June
July
August
September
Ryan designs and constructs a model to illustrate the effects of one type of catastrophic event. He has sand at one end of a long tray. Then he begins filling the other end of the tray with warm water. The water level continues to rise until it covers the sand. What is he trying to demonstrate?
A hurricane
A storm surge
A thunderstorm
A tornado
A new recreation area is being built upstream from an estuary that is known for its abundance of fish and turtles. A dam will be built across the river and a large lake will form behind it.m. What effect will the dam have on the organisms living in the estuary?
Organisms will adapt to living only in the semi-salty water to survive.
Organisms will move to live in the open ocean to survive.
Some of the organisms will die because the water is less salty.
Some of the organisms will die because the water is more salty.
One way that humans have an impact on groundwater is by using it as a primary water source. It is important to try to conserve the resource. The table lists a family's average water usage per day for several activities.
The family wishes to reduce their weekly water usage as much as possible.
Which would save them the most water?
Five days take a short shower/2 days a bath instead of 7 baths.
Watering 15 minutes per day 6 days instead of 30 minutes on 3 days.
Run the dishwasher 5 times a week instead of seven.
Each human produces about 4 pounds of garbage per day that must be disposed of safely. Improper disposal of garbage can make the world unfit to live in and can make the whole environment sick. In a landfill, below the garbage layer, there are four layers that make it a safe place to dispose of garbage. The four layers include a gravel or sand layer, a plastic liner, a layer of clay, and a layer of compacted soil. Each layer is designed to filter, collect, or block pollution from entering the environment.
Which part of the environment would be at risk if the layers were not in place?
the air around the landfill
local water wells
wildlife habitats
farmland
The community shown in the figure uses the river water for drinking and recreation. The river flows from the factory towards the community. Runoff and waste from the community buildings also wash into the river. A dam is going to be built on the river and a lake will form behind the dam. This lake water will become the water source for the community like Belton Lake and Stillhouse Lake.
just before the factory
just before the farmed hillside
just before the forest of trees
just before the housing development
