·
disappearing test tubes (showing the effect of
similar refractive indices),
·
the pop-pop boat (Newton ’s Third law of motion in action and the difference between speed and velocity),
·
melting and non-melting ice cubes on blocks of
different materials at the same temperature,
·
popping a balloon with one nail is easier
than with a dozen nails (illustrating pressure = force / area)
·
how to make a loudspeaker.
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