know what physical science is / meaning (or definition) for physical science
In order to know what physical science is, you just need to look around you. Physical science is everywhere and plays a vital part in your life. Let me run you through the topics that this stream of science deals with and so hope you will be able to form a definition on your own. Movement and ForcesThe topic of “forces” deals with everything that moves (and that also stays in one place). A boulder on a mountain-side will stay there because there are forces holding it in place. Change one of those forces so that they are out of balance and you better make sure you are not at the bottom of the mountain in it's path - otherwise you will really know what physical science is!Gravity is the force that ensures you don't float off into space. Friction is the force that holds a cyclist back from breaking the land speed record. Go into space and because there is no air, there is no friction and so you can go faster and faster – you accelerate. In order to accelerate on earth, more force needs to be applied – in a car this is from the engine, which responds to a force applied by your foot on the accelerator... etc. etc. etc. WavesHow waves move and interact with each other and other objects placed in their way is the subject matter of this section of physics. Standing in front of a seven foot wave while in the surf is going to affect you somewhat! You will experience certain unpleasant forces on your body, and again, you will know what physical science is, personally!Alternatively you may enjoy such a wave if you have a surf board and know how to use it. As you can see, this “section” of physics links up with “Movement and Forces”. It also links up with the next section... Sound and LightLight and sound behave like waves. Play a sound system loud enough and you will know what physical science is because you will feel the force it can put out.Light can be split into it's various components using a prism. Light can be bent and reflected. Sound can also be reflected (that is how bats “see”). Sound and light can be absorbed too. Incidentally, light can also behave as a whole lot of particles. ElectricityHow does electricity flow and what exactly static electricity is, is covered in this section of physics. The study of electricity will explain why your house is wired, or should be wired, in parallel as opposed to being wired in a serial fashion, allowing you to turn on more than one bulb without dimming the next one.It also explains why you should wear rubber soled shoes on new carpets in order to give your “best friend” a bit of a shock and so that he will also know what physical science is! MagnetsMagnets, and how they interact with each other, and magnetic force fields(there is that force thing again) are covered in this part of physics. Did you know that the biggest magnet is the earth! Hence why a magnet, like the earth, has a north and a south pole.Wrapping it up...So...Physical science is the science that deals with the natural world around us, excluding the chemical/element side of things. It also has overlaps with all other sciences – math in particular (formulas play a big part in physics), but earth science (for example magnets, gravity and ocean waves), chemistry (for example forces holding crystals together), biology (for example energy in an ecosystem) all overlap with physics. Some famous physicistsIsaac Newton, the guy who had an apple fall on his head during his siesta and hence came up with the idea of gravity, was into physics. He also was responsible for showing us how to split light using a prism.Benjamin Franklin made the shocking discovery that lighting was electricity. Thomas Edison – famous for amoungst other discoveries and inventions – the modern light bulb. Albert Einstein came up with the famous equation E=MC2 – the theory of relativity. The guys at NASA who build shuttles know what physical science is.
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