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Review Unit 5 Forces and Forcemetes

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  • Why do magnets not attract paper?
    Because paper is not magnetic
  • Name TWO magnetic materials.
    Iron, steel (or nickel, cobalt)
  • Which object is magnetic: wood, steel, or plastic?
    Steel
  • What happens when a north pole meets a south pole?
    They attract
  • What is the standar unit of force?
    Newton (N)
  • What happens when two north poles meet?
    They repel
  • If you pull an object and it is hard to move, what force is acting?
    Friction
  • What tool is used to measure force?
    Forcemeter
  • Which surface has more friction: smooth or rough?
    Rough
  • What type of scientific enquiry is grouping objects into magnetic and non-magnetic?
    Identifying and classifying
  • Does a magnet attract plastic?
    No
  • A magnet has how many poles?
    Two
  • A bag measures 10 N and a shoe measures 5 N. How much heavier is the bag?
    5 N
  • A book weighs 6 N and a pencil weighs 2 N. Which is heavier?
    Book
  • Why do rough surfaces have more friction?
    Because they have more bumps / resistance
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