Science can be defined to be a systematic knowledge of the physical material contained on earth and even beyond. This knowledge is gained through experiments and observations. Identify three (3) specific challenges to making direct measurements in the fields of astronomy, chemistry, physics, or earth science. Describe how scientists have utilized indirect forms of measure to overcome these challenges. Challenges’ arise in the quest to gain this knowledge, for example, ; it becomes difficult sometimes to measure some elements and phenomena directly. Astronomy as a science has been around for quite a while. Astronomy is defined as a natural science that studies objects in the universe such as planets, stars galaxies, moons and even nebulae. This study involves the physics chemistry mathematics and evolution associated with this objects not excluding the phenomena that originates outside the atmosphere of the earth (Neugebauer,50). Astronomy provides an opportunity for armatures to contribute. These contributions are responsible for major developments in this field. This does not imply that all or most discoveries have been carried out. Challenges have risen from different angles, for instance one of the major problems they have encountered is finding the accurate distance of planets and stars from planet earth. However, with the advancements made in the field discoveries such as the use of luminosity and brightness of the astronomical objects to figure out their distance from the earth. Luminosity is a way of measuring the amount of brightness or energy emitted by any form of matter in the universe (Salpeter,10-30). This implies that light that travels to reach the earth can be measured. A hypothesis is made that stars shift off the main sequence after they burn up to about 10% of the hydrogen they contain and that there is an uniform creation of stars in the universe. Using this hypothesis and the luminosity function that has been observed, the rate that stare created as a function of stellar mass is then calculated. These calculations are deemed to assist to indirectly give the distance of a body from the earth. Another possible indirect way of doing this is a method called parallax, which involves triangulation. The major process involved is looking at the records of a star and then looking at it six months later. Astronomers can measure the distance of the angle of viewing .the combination of this work with the orbital diameter of the earth to sun and some involved produces the distance of that body. Objects in space are not the only challenge that astronomers face. Another challenge that astronomers have faced is the determination of the age of the universe. There is no direct way of measuring how long the universe has been around. For a while in the 90s the estimated age of the universe was ten billion years, however, age estimates for the stars and the galaxy were about 13 and 18 billion years respectively. This implies that some bodies in the universe are older than the universe itself. Better estimates of distance to the stars used in measuring age have reduced the disparities down to only a few billion years. Giving a consideration at dark energy into the cosmological model pushed the age estimates of the universe to the current value of 13.80 billion years. Choose two (2) of the most historically influential tools or techniques in the physical sciences. Explain how these techniques or tools work, and how they helped to advance our
Class name: Date when due: Procedures in Physical Sciences Introduction It’s the nature of human beings to question every aspect of their lives since ancient times .people want to understand why thins and structures are the way they are…
Effective and efficient use of physical resources in line with organizational policies and procedures Physical resources are needed in the aerospace sub-contractors trade setting to pledge the association that has specific places or buildings to labour economically.
It presents a critical reflection of all the modules I undertook in my first academic year during both the first and the second semesters. It reflects on the lessons learnt from each of the modules and the personal objectives, aspirations, and goals both achieved and unachieved.
Every human being has a different body and thus different physical attributes. The study demonstrates the relationship between physical activities and sleep duration as exhaustion often demands for physical rest and sleep is considered as the best way of offering some rest to the body (Wolfson, et al, 2003).
An individual who specializes in this field is known as a physical therapist and performs medical examinations, diagnosis and the appropriate physical interventions to ensure that the musculoskeletal structures function effectively and efficiently. The field also includes consultation, research, education and administration.
In order to understand physical science various scientific mechanisms have been developed. These include observations, measurement, enactment of laws and theories, experimentation as well as formulation of hypothesis. Measurement is a very important aspect of physical sciences that rely on set out procedures that are used in standardization of the method used as well as the findings.
“The social sciences are a group of academic disciplines that study human aspects of the world. They diverge from the arts and humanities in that the social sciences tend to emphasize the use of the scientific method in the study of humanity, including quantitative and qualitative methods.
Today, physical activity features high on the list of priority health behaviors for government campaigns aiming to improve health in industrialized nations. Sport, on the other hand, has always been a conduit for a nation to express its identity. As exercise and sport are behaviors conducted in social contexts, social psychology has a significant role to play in understanding the motivation and behaviour of people involved in both recreational exercise for health and competitive sport.
In a typical workplace, there is a lot of interaction among the employees, the executive, and between the employees and the employer. This interaction has mixed results, including improved interpersonal relationships and often, conflict. When there is a difference in opinion and interests, workers may resort to inappropriate methods to settle scores.
6 pages (1500 words)Essay
Hire a pro to write a paper under your requirements!
Win a special DISCOUNT!
Put in your e-mail and click the button with your lucky finger
Apply my DISCOUNT
Got a tricky question? Receive an answer from students like you!Try us!
Let us find you an essay for FREE
Contact us via Live Chat, call us at +16312120006or send an email to email@example.com