Physical Sicence

 Physical science is the science of the inorganic world.  The four main branches of physical science are 

  • Astronomy
  • Physics
  • Chemistry
  • Earth Science (Meteorlogy and Geology)

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Physics facts

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  Physics is the science of matter and its behaviour Comes from the Greek word, physikḗ , which means “ science of nature .” Physics was recognized as a discipline in the 19th century. It aims to understand how the universe works. It originated from astronomy, mathematics, and natural philosophy in 3000 B.C. Galileo discovered the law of free fall after dropping two spheres from the  Leaning Tower of Pisa . An apple didn’t fall on Newton’s head when he discovered the law of universal gravitation. He simply wondered why apples fall downward rather than sideways. A “Eureka moment” references Archimedes’ enthusiasm when he discovered buoyancy (The fact that he ran out naked is a minor detail.). The universe is constantly expanding, getting faster and colder as time passes. Time travel is possible – you’re doing it now, moving forward in time.
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chemistry

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  Chemistry is a fascinating science full of unusual trivia. Some of the most fun and most interesting chemistry facts include: The only solid elements that assume liquid form at room temperature are Bromine and mercury   However, you can melt  Gallium by holding a lump in the warmth of your hand. Unlike many substances, water expands as it freezes. An ice cube takes up about 9% more volume than the water used to make it. If you pour a handful of salt into a full glass of water, the water level will actually go down rather than overflowing the glass. Similarly, if you mix half a litre of alcohol and half a litre of water, the total volume of the liquid will be less than one litre. A pure element takes many forms. For example, diamond and graphite both are forms of pure carbon. Many radioactive elements actually   glow   in the dark. The chemical name for   water   (H 2 O) is dihydrogen monoxide. The only letter not appearing on the   periodic table   is J. Lightning strikes produce O 3
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