Unit 8 Test Question Preview (ID: 42044)
Factors Affecting Earth Systems.
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If a large volcano erupts, it will impact the local ecosystem. Which of the following is NOT a way the volcano will affect the local ecosystem?
a) The lava from the volcano will heat up the air in the local area and kill all life in the area.
b) Lava will run down from the volcano, burning down all the trees around the volcano.
c) When the lava erupts, it will throw dust into the air affecting plants across the island.
d) The lava will run into the ocean around the island, killing coral reef animals.
To test water quality, you must take a measurement of the temperature of your sample. A student bumped into your beaker and knocked it over, breaking your thermometer. What should you do?
a) Have the teacher take care of broken glass.
b) Brush glass into the sink.
c) Use cardboard to sweep up glass.
d) Pick up and dispose of glass in trash.
The Earth's surface is constantly changing. This is mainly due to the-
a) action of wind, water, ice and waves.
b) increased amount of decaying soil.
c) average yearly rainfall.
d) number of meteors in the night sky.
What is a possible effect a hurricane, flood, or tornado could have on wildlife?
a) All of these.
b) Alligators were displaced to areas closer to people's homes and businesses.
c) Migratory birds heading south to winter didn't have a resting place.
d) Cattle were stranded with no grass to graze upon.
Which of these natural disasters is most likely to happen with little or no warning?
a) earthquakes
b) tsunamis
c) hurricanes
d) tornadoes
Plants serve a dual purpose in the erosion process. They anchor down soil which helps prevent erosion, but in contrast they can also cause erosion. Which of the following best describes how they can cause erosion?
a) Plant can grow in the soil between rocks, loosening and cracking the material.
b) Roots can absorb water from the soil and transport it to the rest of the plant.
c) Plants and roots removed to clear land for construction or farming.
d) Soil picked up by the wind and carried as dust for several miles.
Wildebeest are cow-like animals with horns. They migrate in herds across Africa in search of the grasses they feed on. Wildebeest are prey for lions. What impact would a drought have on the wildebeest and lion populatons?
a) Wildebeest and lion populations will both decrease.
b) Wildebeest and lion populations will both increase
c) Wildebeest populations will increase while lion populations will decrease.
d) Wildebeest populations will decrease while lion populations will increase.
Texas has experienced several years of little or no rainfall. Because of this weather pattern, farmers and ranchers have had great economic hardships and large cities such as Dallas have had to create water rationing laws. What is this disaster?
a) drought
b) flood
c) tornado
d) hurricane
The geotropism of plant roots cause rocks to break apart; this is an example of -
a) physical weathering
b) erosion
c) chemical weathering
d) deposition
At a quarry, soil was removed to get to the rock layers underneath. Which part of the environment was probably least affected by this soil being removed?
a) air
b) groundwater
c) runoff water
d) plants
Which ecoregion of Texas is most likely to be most affected by wind erosion?
a) Rolling plains
b) East Texas Piney Woods
c) Blackland Prairies
d) Gulf Coast Prairies and Marshes
Which of the following most likely causes ground water contamination?
a) fertilizer
b) human waste
c) oil spills
d) radioactive substances
In spring 2003 a natural rock outcropping in New Hampshire called the Old Man of the Mountain collapsed. Which of the following most likely loosened the rock and caused it to fall?
a) Water freezing and thawing inside cracks in the rock
b) Heat turning sedimentary rock into metamorphic rock
c) Volcanic activity producing pressure at the rock's base
d) Oxygen reacting with iron on the surface of the rock.
What process formed the Palo Duro Canyon?
a) water erosion from a fork of the Red River
b) years of prevailing winds from the Rocky Mountains
c) deforestation by early settlers
d) continuous, intense rainfall over long period of time
In an experiment, a sample of granite, limestone, marble, and sandstone each had a constant supply of water running over them for 96 hours. The rocks were then checked for signs of erosion. What was the purpose of this experiment?
a) To analyze the effects of weathering on various environments of Texas.
b) To see what kind of rock particles are suitable for purifying water.
c) To see how changes in the rate of water flow affect different kinds of rock.
d) To see the effects of pH on different kinds of rocks.
An experiment measuring the amount of erosion on marble, granite, limestone, and sandstone would be useful for-
a) A sculptor deciding which type of rock to use in a monument.
b) A farmer choosing between contour farming or terracing to prevent erosion.
c) A shorefront property owner want to protect his property from chemical weathering.
d) A golf course grounds keeper deciding what kind of turf to plant on the fairways and greens.
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