Review Of Some Science Facts .

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1. The theory of relativity was propounded by Albert Einstein
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2. The principal metal used in manufacturing steel is Iron.
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3. An altimeter is used for measuring altitude
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4. Oology is the study of Birds eggs
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5. Radioactivity was discovered by Henry Bacquerel
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6. The instrument used to measure the relative humidity of air is Hygrometer.
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7. Barometer was invented by Torricelli.
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8. The unit of power is Watt.
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9. Radium was discovered by Marie and Pierrie Curie.
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10. The existence of isotopes was discovered by Frederick Soddy.
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11. Dynamo was invented by Michael Faraday.
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12. The nuclear reactor was invented by Enrico Ferni.
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13. The law of gravitation was propounded by Sir Isaac Newton.
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14. Crescograph was invented by J.C.Bose.
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15. Crescograph is used to measure the Rate of growth of a plant.
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16. Galileo’s first scientific discovery was Pendulum..
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17. Microscope was invented by Aaton Van Leewen Hock.
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18. The scientist who is known as father of modern biology is Aristotle.
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19. The first person to see a cell under microscope was Robert Hooke.
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20. The smallest flowering plant is Wolffia.
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21. The four blood groups were discovered by Karl Landsteiner.
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22. Sodium was discovered by Sir Humphry Davy.
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23. The atomic number of oxygen is Eight.
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24. The basic building blocks of proteins are Amino acids.
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25. The botanical name of the cotton plant is Gossipium Hirsutum.
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26. An Electroscope is used to Detect charges on a body.
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27. The unit of loudness level is Phon.
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28. An ammeter is used to measure Electric current.
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29. Plant that eat insects are called Insectivorous plant.
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30. The metal used in storage batteries is Lead.