Science 8 Semester 2 Final

50 Questions | Total Attempts: 39

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Science 8 Semester 2 Final

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Questions and Answers
  • 1. 
    One way to kill harmful insects while protecting beneficial insects is to use _________.
    • A. 

      Natural pesticides

    • B. 

      Nonaerosol insecticides

    • C. 

      Spray pesticides

    • D. 

      Inexpensive pesticides

  • 2. 
    Waste that can catch fire, eat through metal, explode, or make people sick is called __________.
    • A. 

      Hazardous waste

    • B. 

      Garbage

    • C. 

      A pesticide

    • D. 

      Critical waste

  • 3. 
    The process of recovering valuable or useful materials from waste or scrap is called ________.
    • A. 

      Reducing

    • B. 

      Rethinking

    • C. 

      Reusing

    • D. 

      Recycling

  • 4. 
    What do scientists call the rock that is formed when magma cools below Earth's surface?
    • A. 

      Volcanic rock

    • B. 

      Eruptive rock

    • C. 

      Intrusive igneous rock

    • D. 

      Extrusive igneous rock

  • 5. 
    The number and variety of organisms in a given area at a certain time is called _______.
    • A. 

      Kingdoms

    • B. 

      Overpopulation

    • C. 

      Ecology

    • D. 

      Biodiversity

  • 6. 
    Which of the following is NOT true regarding cellular respiration?
    • A. 

      It creates carbon dioxide.

    • B. 

      It uses sunlight to help convert glucose into energy.

    • C. 

      It happens on the mitochondrion.

    • D. 

      It occurs in animal cells.

  • 7. 
    The way a surface reflects light is called a mineral's _____.
    • A. 

      Streak

    • B. 

      Magnetism

    • C. 

      Color

    • D. 

      Luster

  • 8. 
    One type of competition involves individuals competing for resources. The other involves competition between different
    • A. 

      Environments.

    • B. 

      Relationships.

    • C. 

      Organisms.

    • D. 

      Populations.

  • 9. 
    When looking at a mineral, the best way to tell its true color is to look at the mineral's _____.
    • A. 

      Reflection

    • B. 

      Luster

    • C. 

      Streak

    • D. 

      Color

  • 10. 
    Besides texture, how else are rocks classified?
    • A. 

      By their composition

    • B. 

      By their grain shape

    • C. 

      By their grain size

    • D. 

      By the amount of foliation

  • 11. 
    After one species disappears, the other species in the ecosystem
    • A. 

      Benefit.

    • B. 

      Are unaffected.

    • C. 

      Die.

    • D. 

      Are thrown out of balance.

  • 12. 
    During the rock cycle, what forms when magma cools?
    • A. 

      Foliated rock

    • B. 

      Metamorphic rock

    • C. 

      Sedimentary rock

    • D. 

      Igneous rock

  • 13. 
    A bird eats a worm. Who is the predator?
    • A. 

      The worm

    • B. 

      Both are the predators

    • C. 

      The bird

    • D. 

      Both are prey

  • 14. 
    How are rock layers arranged in the geologic column?
    • A. 

      The oldest rocks are on the top.

    • B. 

      The youngest rocks are on the bottom.

    • C. 

      The youngest rocks are in the middle.

    • D. 

      The oldest rocks are on the bottom.

  • 15. 
    A naturally occurring solid mixture of one or more minerals and organic matter is called _____.
    • A. 

      Erosion

    • B. 

      Texture

    • C. 

      The rock cycle

    • D. 

      A rock

  • 16. 
    Developing alternative energy sources will reduce our need for __________.
    • A. 

      Electricity

    • B. 

      Fossil fuels

    • C. 

      Habitats

    • D. 

      Cars

  • 17. 
    Photosynthesis allows
    • A. 

      A plant leaf to turn green.

    • B. 

      A plant to produce food (glucose).

    • C. 

      A cell to produce energy without oxygen.

    • D. 

      An animal cell to get energy from food.

  • 18. 
    Organisms that can make their own food from sunlight are called 
    • A. 

      Decomposers.

    • B. 

      Scavengers.

    • C. 

      Producers.

    • D. 

      Consumers.

  • 19. 
    Which of the following is an example of mineral replacement? 
    • A. 

      Petrified wood

    • B. 

      La Brea asphalt

    • C. 

      A frozen mammoth

    • D. 

      Hardened tree sap

  • 20. 
    Cells need to produce new cells in order to
    • A. 

      Create new chromosomes.

    • B. 

      Replace cells that have died.

    • C. 

      Release energy from food.

    • D. 

      Obtain energy from sunlight.

  • 21. 
    Which statement is true about the process of determining whether an object is older or younger than another?
    • A. 

      The process is an exact science.

    • B. 

      The process is called absolute dating.

    • C. 

      The process is only done in certain parts of the world.

    • D. 

      The process is called relative dating.

  • 22. 
    Something that can be broken down by living organisms is ____________.
    • A. 

      Ecological

    • B. 

      Renewable

    • C. 

      Biodegradable

    • D. 

      Economic

  • 23. 
    The process by which land used for mining is returned to its original state is called _____.
    • A. 

      Renovation

    • B. 

      Regeneration

    • C. 

      Reclamation

    • D. 

      Recycling

  • 24. 
    A silicate mineral must contain __________.
    • A. 

      Silicon and carbon

    • B. 

      Carbon and hydrogen

    • C. 

      Oxygen and carbon

    • D. 

      Silicon and oxygen

  • 25. 
    Herbivores, carnivores, and scavengers are all examples of
    • A. 

      Decomposers.

    • B. 

      Producers.

    • C. 

      Omnivores.

    • D. 

      Consumers.

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