7th Grade Science Class - Analyzing an Ecosystem Part 2
Quiz by Carolina Carner
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25 questions
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- Q1The Pineywoods region of Texas has over 85 species of trees and over a thousand species of flowering plants. What is true about erosion in this region?The plants soak up all the water drying the soil leaving it exposed to erosionThere is lots of soil erosion due to the large amount of vegetationThe falling leaves act as compost and fertilize the soilThere is little soil erosion due to the large amount of vegetation, Plants roots keep the soil in place.30s
- Q2Why is soil erosion more common in ecoregions that lack adequate vegetation?because plant roots help keep the soil in placebecause soil erosion is stopped by reduced vegetationbecause gravity pulls on the plants and increases erosionbecause the lack of adequate vegetation affects the soil pressure and erosion rate30s
- Q3Sixty percent of the Texas Gulf Coast shoreline erodes from 30cm to 15m per year. This results inThe formation of barrier islandsFertile soils for plant growthThe formation of canyonserosion changing the shoreline.30s
- Q4According to the figure, which eco-region in Texas would see the most erosion by running water?Panhandle PlainsGulf CoastHill CountrySouth Texas Plains30s
- Q5The gulf side of Padre Island have smoother coastlines than their inland coastlines because of the erosional effects ofWave actionTornadoesHuman pedestriansMigration of animals30s
- Q6A teacher used a stream table to model how a Texas river changes the surface of the Earth. When the teacher finishes pouring the water, which change will most likely have taken place?The largest pieces of sediment will dissolve in the waterThe height of the pile of sediments will increase at the top of the hill.The land area will build up where the river meets the ocean.New mountains will form on the ocean floor.30s
- Q7How has weathering affected Enchanted Rock?The breakdown of surrounding sedimentary rock has exposed the huge granite domeLarge cracks appear due to the rocks heating by day and contracting in the cool nightThe growth of plant roots wedging apart rocks as they growAll of the answers30s
- Q8The best choice to place in Box Y of the graphic organizer is __ErosionPhysical weatheringChemical weathering30s
- Q9Which of the following would be the most effective way to prevent environmental damage from floods?Digging up the soil along the banks of rivers so that it will absorb more waterPeople should not move buildings and roads above the flood levelAvoiding construction that destroys dunes, swamps and flood plains30s
- Q10In late 2004, an earthquake occurred on the bottom of the ocean near the west coast of Indonesia. It was so strong that is caused the entire planet to vibrate 1 cm. What catastrophic events did this create?Volcanoes erupted worldwide destroying plant life on the slopes of the volcanoes.Typhoons destroyed coastline communities and damaged property.Tsunamis eroded beach environments and killed coastal wildlife.The speed of continental drift increased dividing ecosystems.30s
- Q11Earthquakes, volcanic eruptions, tsunamis, and wildfires which impact ecosystems are all examples ofcatastrophic eventsprimary successionenergy sources for producers30s
- Q12Predict which ecosystems in Texas would face the greatest damage due to potential erosion from a hurricaneEcosystems near AustinEcosystems near LaredoEcosystems near Corpus ChristiEcosystems near San Antonio30s
- Q13Which of the following best describes how a hurricane can affect a marine ecosystem?Added rainfall increases marine plant growth.Tide surges rip out and kill many marine plants and displace many marine organisms.Heavy precipitation flood roads, towns, and cities, destroying property.30s
- Q14How would a hurricane most likely affect the Costal Prairie?Storm surge, waves, and high winds would result in erosion that would destroy the Coastal Prairie.Storm surge, waves, and high winds would not affect to Coastal Prairie30s
- Q15The diagram below shows a sequence of environmental changes in an area over a long period of time. Which statement best describes the changes shown in the diagram?Over time, the number of fish increases.Precipitation follows cloud formation.Over time, one natural area is replaced by another.30s
