Game Preview

Water

  •  English    20     Public
    Properties of water, water distribution, water cycle
  •   Study   Slideshow   Edit
  • What percentage of the Earth's water is salt water?
    About 97 %
  •  15
  • What percentage of the Earth's surface is covered in water?
    About 70%
  •  15
  • What is water found below the surface called?
    Groundwater
  •  20
  • Icebergs are water in _____________ state
    solid
  •  10
  • What elements make up a water molecule?
    Hydrogen (2 atoms) and oxygen (1 atom)
  •  15
  • Water molecules stick to other materials due to its polar nature. This property is called...
    Adhesion
  •  20
  • TRUE OR FALSE: One side of the water molecule has a small positive charge and the other side has a small negative charge.
    True. Water is a polar molecule.
  •  15
  • Why is water called the "universal solvent"?
    It dissolves more substances than any other liquid.
  •  20
  • What property of water allows insects to walk on water?
    High surface tension
  •  20
  • Plants release water to the air through...
    (Evapo)transpiration
  •  20
  • When we hang the washing on the line, the clothes dry because of...
    evaporation
  •  15
  • Should we drink salt water?
    No
  •  10
  • The property by which water molecules bond to each other is called...
    cohesion
  •  15
  • TRUE OR FALSE: Water heats up and cools quickly.
    False. Water has resistance to change its temperature.
  •  15
  • TRUE OR FALSE: Water expands when it freezes.
    True. Ice is less dense than water (and that is why ice floats on liquid water).
  •  15
  • What is condensation?
    The change from gas (water vapour) to liquid
  •  15
  • Water that is released from clouds in the sky; includes rain, snow, hail...
    Precipitation
  •  15
  • How can we find most of the fresh water on earth?
    Frozen, as ice. Solid state.
  •  15
  • Why does water move from the roots to the leaves of plants?
    Capillary action (because of adhesion and cohesion)
  •  20
  • Water is the only natural substance that can be found in the three states: ______. ___________ and ___________
    solid, liquid and gas
  •  15