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Duplicate of 8th Grade Science Review

  • Game Code: 1035885
  •  52     Public
    Review for 8th grade Science EOG - Released test 2013
  •   Study   Slideshow
  • Why is a healthy diet important?
    It prevents damage to internal organs.
    It maintains a constant body temperature.
    It makes oxygen for all the cells in the body.
    It supplies the body's need for growth and energy.
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  • What happens to water molecules during the boiling process?
    They move faster & remain close tog. as they absorb heat.
    They move faster & move  farther apart as they absorb heat.
    They move faster & farther  apart as they  lose heat.
    They move slower but move farther apart as they lose heat.
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  • If a chem reaction begins w/ 6 atoms of carbon, how many carbon atoms will be in the products?
    12 atoms of carbon
    2 atoms of carbon
    6 atoms of carbon
    3 atoms of carbon
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  • Which is a possible disadvantage of using flowing water to produce electricity?
    creates reservoirs
    only suitable for industrial use
    ecosystem damage and loss of land
    reduced carbon dioxide emission
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  • Why is water from an aquifer more likely to be cleaner than water from other sources?
    b/c it receives water directly from precipitation
    b/c pollutants are filterd by rock and soil  deep w/i Earth
    b/c it forms where fresh and salt water meet
    b/c it rises to the surface near the ocean
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  • In which oceanic zone do clams and crabs survive by burrowing in the sand?
    intertidal
    oceanic
    deep ocean
    open ocean
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  • If a body of water has high turbidity levels, what can most likely be conluded?
    It has low pH.
    It contains a lot of chemicals.
    It is too hot to drink.
    It is unsafe to drink.
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  • Dino fossils are found in the btm layers of a rock cliff & mammal fossils in the mid layer.Why?
    Dinosaurs lived on Earth before  mammals.
    Dinosuars were eaten by mammals.
    Dinosaurs ate plants.
    Dinosaurs and mammals lived at the same time.
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  • 10 people got sick with flu after attending a dance. What best explains how they got sick?
    contact with infected animals
    contact with an object
    contact with an infected person
    contact with environmental sources
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  • Which is the best way to help prevent the flu from becoming a pandemic?
    taking antibiotics
    washing hands often
    eating fruits and vegetables
    getting a vaccination
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  • Which best explains the importance of nitrogen in the cycling of energy and matter?
    Nitrogen decreases the effectiveness of photosynthesis.
    Nitrogen decreases protein production in plants.
    Nitrogen increases protein production in plants.
    Nitrogen increases the effectiveness of photosynthesis.
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  • Which is the way the agricultural biotech industry could have a positve impact on the envir?
    by increasing the use of wind farms that produce eletricity.
    by making robots to replace  large farm machines
    by reducing the need for countries to import food
    by producing crops that are virus resistant
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  • If wolves prey on deer, what will most likely happen to the deer pop. if wolves are removed?
    The population of deer will remain the same.
    The population of deer will decrease.
    The population of deer will increase.
    The population of deer will become extinct.
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  • Where do plants get most of the energy they need to grow and live?
    water
    soil
    air
    sunlight
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  • Scientists believe dolphins & whales evolved from a common ancestor. Which evidence supports?
    They swim the same way.
    They eat the same food.
    They have similar anatomies.
    They live in the same area of ocean.
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  • In winter, the arctic fox has white fur. In summer, it is red/brown. What causes this change?
    the amount of sunlight present
    the fox's habitat
    the fox's genes
    the fox's age
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