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30 objects that float or sink in a fun online
physics learning quiz.

"Sink or Float" is a free online knowledge level game to select which objects sink and which floats in water. Physics learning game, suitable for online classes and interactive lessons. Fun physics educational game to explore and study density of objects. Part of the Interactive Physics Workshop educational tools. Online physics educational game. Fun physics quiz.

This physics class game include the following objects an their behavior in water:
  • Plank - Float
  • Apple - Float
  • Pen - Sink
  • Brick - Sink
  • Poop - Float
  • Sponge - Float
  • Gold - Sink
  • Sugar - Sink
  • Banana - Float
  • Leaf - Float
  • Lego - Float
  • Anvil - Sink
  • Feather - Float
  • Cucumber - Float
  • Potato - Sink
  • Avocado - Sink
  • Diamond - Sink
  • Marble - Sink
  • Polystyrene - Float
  • Ice Cube - Float
  • Pumpkin - Float
  • Chocolate - Sink
  • Fresh Egg - Sink
  • Spoled Egg - Float
  • Lemon - Float
  • Mango - Sink
  • Orange - Float
  • Glass - Sink
  • Coal - Float
  • Plasticine - Sink
Sink or Float Picture

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How to play Sink or Float Quiz.

An object will be shown on the screen and the player must define if it floats or sinks in water. At the bottom left is the button for the floating objects and at the bottom right is the button for the sinking objects. When selected the object will appear at its correct side and it will be framed in green if answered correctly and in red if incorrectly. Define all 30 objects to win the game.

Knowledge Achievements:
Know 10 things that sink or float and get +1 Knowledge Level.
Difficulty: Medium.

Sink or Float Game

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Class subject: Density.

As a basic rule, objects that are denser than water density will sink and the ones that have less density will float. In reality things are not so simple, because there are more physical forces and phenomenas that takes effect. For example if you throw a book in the water at first it will float and when the pages soak with water it will sink. If you place a CD horisontaly in the water it will float, but if put verticaly with the thin edge it will immediately sink. Also objects which hold air, like bottles and canteens are tricky to say exactly if they floats or sinks. Constructions like ships, which have specific forms to displace water also floats, although they are denser and heavier. The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume.

This fun physics quiz may answer the following questions:
  • Do cucumbers sink or float in water?
  • Does potato sink or float in water?
  • Do eggs sink or float in water?
  • Does coal sink or float in water?
  • Do oranges sink or float in water?
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