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NATURAL SCIENCE UNIT 6 REVIEW

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  • say two discoveries
    ...
  • Which simple machine helps us to split objets?
    Wedge
  • What are machines?
    Machines are devices which help us in our daily lifes
  • which tool is used to cut objects like wood?
    hand saw
  • What are the two types of machines?
    SImple and coplex machines
  • When using machines, why do we need a hard hat?
    To protect your head
  • what is a discovery?
    when someone discovers how to use something that already existed
  • When using machines, why do we need safety boots?
    to protect your feet
  • What do we use an inclined plane for?
    To lift or lower objects to a different level
  • What do we use a wheel and axle for?
    To move objects easily
  • Which simple machine help us to hold two objects together?
    Screw
  • When using machines, why do we need gloves?
    to protect your hands from cuts
  • say two inentions
    ...
  • When using machines, why do we need safety glasses?
    to protect your eyes
  • what do we use the pliers for?
    to cut small things like wire
  • Say three examples of complex machines
  • What do we use a pulley for?
    To lift or lower objects easily
  • Which simple machine is a long bar that moves around a fulcrum?
    Lever
  • When using machines, why do we need earmuffs?
    to protect your ears from loud noises
  • what is an invention?
    when someone makes something new that didn't exist before
  • What are complex machine?
    It is made up of two or more simple machines
  • When using machines, why do we need a high visibility vest?
    to make yourself visible to others
  • which tool is used to turn screws?
    screwdriver
  • What are simple machines?
    They are devices made up of one or two parts
  • Which tool is used to hit nails into the wall?
    hammer
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