STD 4 Science set 3
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1) Which is the largest ocean on Earth?
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3) . What is the main source of water on Earth?
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4) . In which state is water a liquid?
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7) . What is the process of water turning into vapor called?
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8) What is everything around us made of?
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9) Which of the following is a natural source of freshwater?
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10) Which of the following is a form of water?
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11) What percentage of the Earth's surface is covered with water?
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13) . Which part of the body helps you breathe?**
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14) . What is the chemical formula for water?
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15) . Which gas do plants release during photosynthesis that involves water?
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16) . What is the freezing point of water on the Celsius scale?
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17) . In which state is water a liquid?
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18) What is the name for the continuous movement of water from the Earth's surface to the atmosphere and back again?
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19) What is the process of water falling from the sky as rain, snow, sleet, or hail called?
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20) . What is the water cycle?
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21) . What is the color of pure water?
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22) . Which of the following is NOT a source of water?
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23) . What happens to water when it is heated?
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24) . What do we call the tiny drops of water that form on cool surfaces at night?
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25) . What is the name for a large body of water surrounded by land?
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