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4° SCIENCE REVIEW 1st TERM

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  • Crabs, spiders, and insects belong to the invertebrate group called ______.
    Arthropods.
  • ______ connect muscles to bones.
    Tendons.
  • What are the three main parts of the skeleton?
    Head, torso, and limbs.
  • What are the three main functions of the human skeleton?
    Support, give shape, and protect organs.
  • An ______ is a hard covering that protects the soft bodies of some invertebrates.
    exoskeleton.
  • Snails and clams belong to the invertebrate group called ______.
    Mollusks.
  • The muscular system is made up of ______ and ______.
    muscles and tendons.
  • Mention the 3 types of bones (f)
    Flat bones Example: Skull or ribs.
  • Scientists classify animals into two big groups: ______ and ______.
    Vertebrates, Invertebrates.
  • Mention the 3 types of bones (s)
    Short bones Example: Hands or feet.
  • Many mollusks have a ______.
    shell.
  • Which bones protect your heart and lungs?
    The ribs (or rib cage).
  • The process where an arthropod grows a new exoskeleton is called ______.
    molting.
  • Muscles work in ______.
    pairs.
  • Mention the 3 types of bones (l)
    Long bones Example: Arms or legs.
  • When one muscle __________ (gets shorter), the other one __________ (gets longer).
    contracts, relaxes.
  • When you bend your arm, your ______ muscle contracts.
    biceps.
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