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what causes earthquakes.
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newtons 3rd law - why does a swimmer push the water backward.
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refraction of light - why does a pencil look bent in water.
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lunar eclipse - why does the moon turn red.
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how do stars form.
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how do microwave ovens work.
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lateral inversion - why is ambulance written in reverse.
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how do straws work.
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how do igloos keep you warm.
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how do x-rays work.
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has the bermuda triangle mystery been solved.
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gravitational force - why do you weigh less on the moon.
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can we travel faster than light.
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gravity - why are planets spherical.
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how do chameleons change color.
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how do glasses work.
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diffusion - why can we smell hot food from a distance.
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the 3 rs for kids _ .
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friction - why is it difficult to pull a boat on the beach than on the sea.
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earthing - why do buildings have lightning rods.
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frequency - why do women have shriller voices than men.
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forced vibrations - why does a guitar have a hollow box.
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are einsteins gravitational waves real.
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density - why does an iron nail float on mercury and sink in water.
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density - why do firemen crawl in smoke filled rooms.
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buoyancy - can you drown in the dead sea.
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convex lens - can a magnifying glass burn paper.
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concave mirror - why is your reflection upside down on a spoon.
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archimedes principle - why do ships float.
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archimedes principle - why do we weigh less in water.
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physical and chemical changes for kids _ .
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atmospheric refraction - why do stars twinkle.
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water pollution for kids _ .
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states of matter for kids _ .
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layers of the earth for kids _ .
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tooth structure for kids _ .
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seasons on earth _ videos for kids _ .
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parts of the body for kids _ .
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planets of the solar system _ videos for kids _ .
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layers of soil for kids _ .
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phases of moon _ .
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living and nonliving things for kids _ .
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how do birds fly for children _ .
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light _ videos for kids _ .
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parts of a plant _ videos for kids _ .
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modes of transportation _ videos for kids _ .
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balanced diet _ .
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air pollution for kids _ .
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