1) Air is a: a) Liquid b) Solid c) Gas 2) Water can be: a) Liquid b) Solid c) Gas d) Liquid, solid and gas. 3) When water changes from liquid to solid, is called: a) Freezing b) Melting 4) When water changes from solid to liquid, is called: a) Freezing b) Melting 5) Snow and rain are water falling in different ways. These are axamples of: a) Evaporation b) Condensation c) Precipitation 6) The water we drink is treated to make it __________. a) safe b) dirty c) orange 7) Clean water and air are important for all living things. When the water is not clean, we call water: a) crystal b) polluted c) liquid 8) Which of these statements is NOT something we need to do to protect air and water: a) Turn off the tap when we brush our teeth. b) Walk or bike instead of drive. c) Pour oil into the sink. d) Recycle plastic and paper.

science air and water review

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