Life Science - 8th Grade - Chapter 4-6 Review

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 Life Science - 8th Grade - Chapter 4-6 Review
Life ScienceSeton Home Study School EditionAll Creatures Great and Small

  
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  • 1. 
    Which of the following is incorrect?
    • A. 

      The triple beam balance is also called the pan balance

    • B. 

      The triple beam balance measures the mass of an object

    • C. 

      The pan balance measures the weight of an object


  • 2. 
    A thermometer is used to measure calories.
    • A. 

      True

    • B. 

      False


  • 3. 
    The Bunsen Burner is used in many laboratories to
    • A. 

      Measure temperature.

    • B. 

      Magnify objects so they may be more easily seen.

    • C. 

      Measure liquids.

    • D. 

      Provide heat.


  • 4. 
    Which of the following is not a part of the compound microscope?
    • A. 

      Eyepiece

    • B. 

      Objective lens

    • C. 

      Stage

    • D. 

      Rider

    • E. 

      Arm

    • F. 

      Nose piece


  • 5. 
    A carefully marked tube of glass or plastic that is used to determine the volume of a liquid is called a
    • A. 

      Compound microscope

    • B. 

      Graduated cylinder

    • C. 

      Compound cylinder

    • D. 

      Graduated microscope

    • E. 

      Granulated cylinder

    • F. 

      Bunsen Burner


  • 6. 

    What is this instrument?
    • A. 

      Bunsen Burner

    • B. 

      Compound Microscope

    • C. 

      Graduated Cylinder

    • D. 

      Thermometer


  • 7. 
    A compound microscope is used to measure very small objects or organisms.
    • A. 

      True

    • B. 

      False


  • 8. 
    Bright light will "scare" many microbes away, which part of the compound microscope allows you to reduce the light?
    • A. 

      Stage

    • B. 

      Diaphragm

    • C. 

      Mirror

    • D. 

      Nose piece

    • E. 

      High power objective

    • F. 

      Body tube

    • G. 

      Coarse adjustment


  • 9. 
    Which of the following is the smallest?
    • A. 

      Neutron

    • B. 

      Electron

    • C. 

      Atom


  • 10. 
    Which of the following is the smallest?
    • A. 

      Neutron

    • B. 

      Nucleus

    • C. 

      Molecule


  • 11. 
    Which of the following is the smallest?
    • A. 

      Atom

    • B. 

      Nucleus

    • C. 

      Molecule


  • 12. 
    Which of the following are elements? (check 4)
    • A. 

      Hydrogen

    • B. 

      Seawater

    • C. 

      Oxygen

    • D. 

      Plasma

    • E. 

      Protoplasm

    • F. 

      Sulfur

    • G. 

      Air

    • H. 

      Carbon


  • 13. 
    Which of the following are compounds? (check 4)
    • A. 

      Sodium

    • B. 

      Seawater

    • C. 

      Oxygen

    • D. 

      Plasma

    • E. 

      Protoplasm

    • F. 

      Chlorine

    • G. 

      Air

    • H. 

      Carbon


  • 14. 
    An atom is the smallest part of an element with all the properties of the element.
    • A. 

      True

    • B. 

      False


  • 15. 
    An atom is the smallest part of a compound with all the properties of the compound.
    • A. 

      True

    • B. 

      False


  • 16. 
    An molecule is the smallest part of a compound with all the properties of the compound.
    • A. 

      True

    • B. 

      False


  • 17. 
    A molecule is the smallest part of an element with all the properties of the element.
    • A. 

      True

    • B. 

      False


  • 18. 
    Mass is the downward force of an object due to gravity.
    • A. 

      True

    • B. 

      False


  • 19. 
    Weight is the downward force of an object due to gravity.
    • A. 

      True

    • B. 

      False


  • 20. 
    Weight is the amount of matter in an object.
    • A. 

      True

    • B. 

      False


  • 21. 
    The nucleus of an atom is the ______________________.
    • A. 

      Dense center region

    • B. 

      Very tiny negative particles

    • C. 

      Orbit that the particles follow around the dense center region

    • D. 

      Empty space within it


  • 22. 
    Atoms are mostly made up of empty space.
    • A. 

      True

    • B. 

      False


  • 23. 
    Select all that are correct.
    • A. 

      Neutrons have a positive charge

    • B. 

      Neutrons have a negative charge

    • C. 

      Neutrons do not have a charge

    • D. 

      Protons have a positive charge

    • E. 

      Protons have a negative charge

    • F. 

      Protons do not have a charge

    • G. 

      Electrons have a positive charge

    • H. 

      Electrons have a negative charge

    • I. 

      Electrons do not have a charge


  • 24. 
    There are more than __________ kinds of atoms.
    • A. 

      10000

    • B. 

      1000

    • C. 

      100

    • D. 

      10


  • 25. 
    Na is the symbol for _______________.
    • A. 

      Nitrogen

    • B. 

      Sulfur

    • C. 

      Iron

    • D. 

      Sodium


  • 26. 
    Fe is the symbol for ________________.
    • A. 

      Zinc

    • B. 

      Iron

    • C. 

      Phosphorous

    • D. 

      Iodine


  • 27. 
    The symbol for oxygen is __________.
    • A. 

      O

    • B. 

      X

    • C. 

      Y

    • D. 

      N


  • 28. 
    The symbol for potassium is ________________.
    • A. 

      P

    • B. 

      O

    • C. 

      T

    • D. 

      K


  • 29. 
    Approximately how many atoms can be found in a single drop of water?
    • A. 

      15 million

    • B. 

      15 billion

    • C. 

      15 trillion

    • D. 

      15 billion trillion

    • E. 

      15 trillion gazillion


  • 30. 
    An element is ________________________________________.
    • A. 

      The smallest part of an atom with all the properties of an atom

    • B. 

      A simple substance that cannot be broken down by ordinary chemical means.

    • C. 

      An individual piece of a compound

    • D. 

      A group of different kinds of compounds that are together but keep their own properties


  • 31. 
    A molecule is ________________________________________.
    • A. 

      The smallest part of an atom with all the properties of an atom

    • B. 

      A simple substance that cannot be broken down by ordinary chemical means.

    • C. 

      An individual piece of a compound

    • D. 

      A group of different kinds of compounds that are together but keep their own properties


  • 32. 
    Check each item if it is part of the structure of an atom.
    • A. 

      Protons

    • B. 

      Hydrons

    • C. 

      Electrons

    • D. 

      Neutrons

    • E. 

      Cyclons


  • 33. 
    What percent of your body weight is water?

  • 34. 
    Which element is the most abundant in your body?
    • A. 

      Water

    • B. 

      Oxygen

    • C. 

      Hydrogen

    • D. 

      Sodium


  • 35. 
    Protoplasm is living matter.
    • A. 

      True

    • B. 

      False


  • 36. 
    Protoplasm is a cell wall.
    • A. 

      True

    • B. 

      False


  • 37. 
    Osmosis is ___________________________________.
    • A. 

      Where the cell releases energy

    • B. 

      A constant circular motion

    • C. 

      Living material

    • D. 

      Diffusion of water through a cell membrane


  • 38. 
    Chromosomes are ______________________________.
    • A. 

      Where the cell releases waste

    • B. 

      Tube like parts where reactions take place

    • C. 

      Long thread-like chemicals that contain the instructions for the cell

    • D. 

      Used by plants to capture sunlight


  • 39. 
    Mitochondrion is ___________________________________.
    • A. 

      Where the cell releases energy

    • B. 

      A constant circular motion

    • C. 

      Living material

    • D. 

      Diffusion of water through a cell membrane


  • 40. 
    All living things are made up of more than 15,000,000,000 cells.
    • A. 

      True

    • B. 

      False


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