How is observation different from imagination?
The American Heritage dictionary defines observation as the “act of noting and recording something, such as a phenomenon with instruments”. It relies on any one of our five senses to infer ideas through a systematic thought process. On the other hand, imagination is mental imaging. Although it is based on founded concepts, it is geared more towards creative thinking. Chapter 4 Question 4: Describe three common temperature scales. What fixed points are used to calibrate them? The three most common temperature scales are the Fahrenheit Scale, the Centigrade Scale, and the Kelvin Scale (www. thermometricscorp.com).
Fahrenheit is the temperature reference used in the United States. Its freezing point is at 32 degrees while its boiling point is at 212 degrees. The Centigrade Scale, or otherwise known as the Celsius Scale, is easily calibrated at 0 degrees to freeze and 100 degrees to boil. While the Kelvin Scale shares the same points as its Centigrade brother, the Kelvin Scale 0 point is considered absolute. Absolute zero is the lowest possible temperature point that translates to -273. 15 degrees (www. thermometricscorp. com). This is the reason why the Kelvin Scale is also known as the “Absolute Temperature Scale”.
Chapter 2 Question 7: According to Newton what are the two types of motion in the Universe? How did this view differ from those of previous scholars? Newton’s first law of motion (Henderson, 2007) is simply the movement of an object in a constant fashion unless otherwise redirected by another object that crosses it path. So say an arrow is shot, its movement will stay constant on its path unless otherwise deflected. His second law focuses on the impact of external force on an object, whether by pulling or pushing. The acceleration, path and quality of motion depend on force applied to the object.
These two laws differ from what Aristotle claimed that motion is all “natural” (www. scienceclarified. com). A rock falls to the ground because rocks belong on the ground. And object heated rise to the air because the sun is hot therefore heat always rises. Chapter 23 Question 3: What is the difference between a dominant and a recessive gene? A dominant gene is one that produces the same phenotype even when its allele is not identical. A recessive gene then is otherwise defective. It is not enough to maintain a trait structure in an organism (Wassenaar, 2007).
As the names imply, it is the dominant gene that defines the genetic trait of an organism. Chapter 24 Question 5: What is a genetic disease? Give an example. A genetic disease is caused by abnormalities in the genetic make-up of an individual. There are four subtypes of such diseases, single-gene, multi-factorial, chromosomal and mitochondrial (Human Genome Project Information, 2003). A genetic disease, regardless of type happens usually during conception. One of the most common conditions is Down Syndrome. It is a condition where the presence of an extra 21st chromosome lowers the development of mental ability.
Chapter 5 Question 11: Under what circumstances can a magnetic field produce electric charge? Only a fluctuating magnetic field can produce an electric charge (Stern & Peredo, 2004). The voltage created from the fluctuation produces current that then creates an electric charge. Otherwise a steady magnetic field remains dormant. Chapter 6 Question 16: Describe the Doppler Effect. Give an example of how you can experience this effect. The Doppler Effect is the change in frequency and wavelength of waves as a result of motion of the source (Russell, 2007). It was named after Christian Doppler who introduced this phenomenon in 1842.
The most common example is the sound of an ambulance siren that goes from a low tone to a high tone and vibrates while in motion.
American Heritage Dictionary Online (2007 edition). ‘Act of noting and recording something, such as a phenomenon with instruments’. Retrieved on February 7, 2008 from www. Answers. com Thermometrics Corporation (1995-2010 copy write). ‘Fahrenheit scale, Centigrade Scale, Kelvin Scale’. Retrieved on February 7, 2008 from www. thermometricscorp. com Henderson, T. (2007). ‘Newton’s first law of motion’. The Physics Classroom Tutorial Encyclopedia of Science (2007).
‘Aristotle claimed that motion is all “natural”. Laws of Motion (History). Retrieved on February 7, 2008 from www. scienceclarified. com Wassenaar, T. (2007). “Trait structure in an organism’. Recessive and Dominant Gene Action. Ask a Scientist Human Genome Project Information (2003). ‘Four types of such diseases’. Retrieved on February 7, 2008 from www. genomics. energy. gov Stern, D. and Peredo, M (2004). ‘Fluctuating magnetic field’. FAQ: Exploration of the Earth’s Magnetic Sphere Russell, D. (2007). ‘Change in frequency and wavelength’. The Doppler Effect and Sonic Booms.Sample Essay of StudyFaq.com