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Procedures in the Physical Science

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Procedures in the Physical Science
Erica Taylor

Introduction to Physical Science
April 25, 2013

Procedures in the Physical Science Science is defined as the systematic knowledge of the physical or material world gained through observation and experimentation (science, n.d.). Science is an ongoing quest for knowledge and understanding of not only the world itself, but the universe as well. In order to accomplish this quest, scientists use many tools to measure and analyze a variety of elements and phenomena in order to have a clear understanding of why things are the way they are. There are times however when direct measurement of something is not an option requiring scientists to find alternate solutions. Astronomy is the scientific study of the universe and what it is comprised of such as stars and planets. A scientist cannot simply use a ruler to measure how far away a star actually is and therefore indirect measurement techniques are needed. One such technique is the parallax method which involves triangulation. By looking at a star and record its location and then looking at it again six months later, astronomers can measure the distance of the angle of viewing. Combining this information with the orbital diameter of Earth to the sun and a little bit of geometry, astronomers can see that the different angles produce different distances (How are astronomers, 2000). Objects in space aren’t the only challenges scientists face when trying to obtain measurement data. Earthquakes are a dangerous phenomenon caused by the shifting of Earth’s tectonic plates along its fault lines. Fault lines are many kilometers below the surface of the earth making any direct measurement methods extremely difficult. When the tectonic plates shift to cause an earthquake, energy is released and radiates out from the fault line similar to ripples in a pond. These energy...

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