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        Dear Guest, Only one of the three possible answers for each question is the right one. Find out how much you really know about Science One. You have to be a registered user if you would like to take this test.

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        What happens to objects in zero gravity?


        They float

        They rise

        They drop

        What do you call the thin coil of wire inside a light bulb?


        A horux

        An enzyme

        A filament

        Why do water pipes often burst in freezing weather?


        Because the pipe material shrinks when it freezes

        Because water becomes an acid when it freezes

        Because water expands when it turns into ice

        What happens if you push a north pole of one magnet towards a north pole of another magnet?


        They attract each other

        They repel each other

        They become hot

        Which are the primary colors?


        Red, yellow, and blue

        Red, Green, Blue

        Pink, green, and purple

        Which instrument would you use to measure air pressure?


        A thermometer

        A barometer

        A thermostat

        Why would a balloon filled with hot air fly better on a cold day than a warm day?


        Hot air always rises, and the difference in temperature is greater on a cold day.

        Because the gravity of the earth is lower when it is cold

        Because ballons like cold weather better

        What do vibrations in the air produce?


        Light

        Water

        Sound

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