Physics
Steel is more elastic than rubber because it :

Is harder than rubber
Is never deformed
Is deformed very easily
Requires larger deforming force

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Physics
Skating on ice is possible because

The pressure on the ice due to skate raises its melting point
Ice is cold
The pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water
The surface of ice is smooth

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