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4th Science Review

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  • Name this state of matter.
    Liquid
  • Name this state of matter.
    Gas
  • Name this state of matter.
    Solid
  • True or false: "Mass is the amount of matter in an object" True
    True
  • How many states of matter are there?
    3
  • Solid >>>>>> Liquid
    Melting
  • Gas>>>>>>Liquid
    Condensing
  • Mass is the amount of ____________ in an object.
    matter
  • How can we change states of matter?
    By melting, evaporating, condensing, or solidifying
  • Liquid>>>>>>>>Solid
    Solidifying
  • The amount of space an object occupies is called __________.
    volume
  • Magnets have two poles: _______ and ______.
    North and south
  • Liquid>>>>>>Gas
    Evaporating
  • What forces can you see in the picture?
    Push & Pull
  • The same poles of a magnet __________. repel or attract ?
    repel
  • Forces make things float or _________.
    sink
  • How many types of forces are there? Name them.
    2: contact forces & non-contact forces
  • We can´t see forces but we can feel their__________.
    effect
  • Everything in the Universe is made of ______________.
    matter
  • True or False: Friction is a non-contact force.
    False
  • What force is very weak in space?
    Gravity
  • True or false: "Weight is equal to mass"
    False.
  • What two forces are acting on this floating log?
    Gravity & Buoyancy
  • What units do we measure volume in? Kg? g? ml? l?
    millilitres (ml) & litres (l)
  • True or False: "The Earth´s gravity pull the Moon towards its centre"
    True
  • Gravity is a ________ pull force.
    non-contact
  • True or false: Mass is measured in millilitres (ml) and litres (l).
    False. grams (g) and kilograms (kg)
  • When temperature increases do atoms move closer together or further apart?
    further apart
  • True or False: Mass is anything that occupies space and has mass.
    False: *Matter* is anything that occupies space and has mass.
  • Name two non-contact forces.
    Gravity & Magnetism
  • Opposite poles of a magnet ________.
    attract