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STD 4 Science set 3

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1) . What is the water cycle?

 

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2) What percentage of the Earth's surface is covered with water?

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3) Which is the largest ocean on Earth?

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4) . What is the name for a large body of water surrounded by land?

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5) . What is the main source of water on Earth?

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6) . Which part of the body helps you breathe?**

 

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7) . What do we call the tiny drops of water that form on cool surfaces at night?

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8) . What happens to water when it is heated?

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9) Which of the following is a natural source of freshwater?

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10) What is the process of water falling from the sky as rain, snow, sleet, or hail called?

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11) What is everything around us made of?

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    12)
  1. Which of the following is a man-made source of water storage?

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13) 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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14) . What is the chemical formula for water?

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15) . In which state is water a liquid?

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16) . Which gas do plants release during photosynthesis that involves water?

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17) . What is the color of pure water?

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    18)
  1. What is the process of water moving through the soil and rocks called?

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19) . What is the freezing point of water on the Celsius scale?

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20) . Which of the following is NOT a source of water?

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21) Which of the following is a form of water?

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    22)
  1. What is the main purpose of drinking water?

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23) . What is the process of water turning into vapor called?

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    24)
  1. What happens when water is cooled below its freezing point?

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25) . In which state is water a liquid?

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