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TEKS Grade 7 Science - 7.8 - Diagnostic Earth Systems

Quiz by Texas Education Agency

Grade 7
Science (2017)
Texas Essential Knowledge and Skills (TEKS)

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Measures 3 skills from
Grade 7
Science (2017)
Texas Essential Knowledge and Skills (TEKS)

7.8c
7.8b
7.8a

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10 questions
Show answers
  • Q1
    A student sets up the investigation shown. The movement of colored water through the gravel best models —
    Question Image
    condensation of water vapor
    surface runoff of precipitation
    conservation of water
    pollution of groundwater
    30s
    7.8c
  • Q2
    A student’s model of an area near a city depicts many activities that affect the quality of the water in the area. How does the agricultural activity most likely affect the surface water of the area?
    Question Image
    Crops absorb pure water from soil, causing the remaining water to contain more salt.
    Crops reduce erosion, increasing the amount of soil entering the river.
    Excess crop material accumulates on the riverbanks, slowing the movement of the river water
    Excess crop fertilizer is carried by runoff into the river, causing excess growth of water plants.
    30s
    7.8c
  • Q3
    A student drew the model below to represent a part of a watershed and some human activities that affect the watershed. How do the industrial, agricultural, and residential activities of humans most likely affect the groundwater in the area?
    Question Image
    All of these
    Pollutants from the activities percolate through the soil and enter the water table.
    The activities replace the groundwater used.
    The activities prevent most of the water from evaporating into the atmosphere.
    30s
    7.8c
  • Q4
    An example of the dramatic effects of ___________ is the shape of the Grand Canyon.
    soil
    biotic
    water
    air
    30s
    7.8b
  • Q5
    Why is the soil with growing trees not easily eroded by water?
    The roots hold the soil particles together
    The soil is compact and hard to break.
    The roots absorb the water
    The soil stops the water from seeping into it.
    30s
    7.8b
  • Q6
    Which Catastrophic Event has the biggest impact on Texas?
    Hurricanes
    Tornadoes
    Floods
    Earthquakes
    30s
    7.8a
  • Q7
    What is the definition of ecological succession?
    Occurs when there is a heavy rainfall or when there is a dam or levee failure
    Pioneer species plant called lichens begin to grow on the rock
    Ecological succession includes changes that occur gradually or suddenly in an area
    An underground layer of rock or soil which holds water
    30s
    7.8a
  • Q8
    What are Catastrophic Events?
    The removal of soil and rock by water, wind, or other forces.
    The type of weathering in which rock is physically broken into smaller pieces
    Extreme weather events such as floods, hurricanes, and tornadoes; classified by the extent and intensity of their impact on the ecosystem.
    A land form caused by the deposition of sediment from wind
    30s
    7.8a
  • Q9
    Which of the following is most likely to cause the greatest disruption to an ecosystem?
    Emptying an aquarium containing non-native species into a local waterway
    Cleaning the windshield of a car with an alcohol-based glass cleaner
    Cutting down a small cedar tree to make holiday decorations
    Mowing the lawn in a city park
    30s
    7.8c
  • Q10
    Deforestation affects both the people and animals in which trees are removed. How does deforestation affect the animals?
    It increases the number of animals
    Animals increase their source of food.
    It destroys the habitat of animals.
    It destroys the habitat of animals.
    30s
    7.8c

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