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<td>Why does a helium balloon defy gravity?</td>
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<td>Which planet is the closest one to us?</td>
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<td>What would a helium balloon experience if it was let go?</td>
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<td>Why is it easier to ride a bike downhill than uphill?</td>
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<td>How does depth affect hydrostatic pressure?</td>
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<td>How do windmills work?</td>
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<td>How do solar panels work?</td>
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<td>How do water power plants work?</td>
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<td>Why do most snowflakes have repeating patterns in 6's?</td>
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<td>Is perpetual motion possible?</td>
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<td>How cold would a popsicle need to be if eating it would consume more energy than eating it would release?</td>
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<td>Why does the climate on the equator involve a lot of rainfall?</td>
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<td>How much money do you save in a year if you sweep the floor of your shower area after a shower?</td>
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<td>By how much would the ocean surface level rise if all polar ice melted?</td>
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<td>Why do we have annually repeating seasons?</td>
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<td>Find the rate of change in mass [[$\Delta m$]] of a bunsen burner change relative the rate of change in temperature [[$\Delta T$]] of water heated by it?</td>
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<td>How does facial recognition in modern smartphones work?</td>
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<td>Considering that it is impossible to exit a black hole after entering it, how is it possible that black holes radiate energy?</td>
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</table>2019-05-13T07:35:51+03:00