Science
The scientific world contains a wealth of knowledge that enables mankind to live the way it does. EssaysForStudent.com can help you close the gaps in your knowledge.
4,609 Essays on Science. Documents 3,121 - 3,150
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Planetary Comparison
Planetary Comparison Paper Properties of Earth Earth is the fifth largest planet in our solar system and the third planet from the Sun. Earth’s diameter is 12,756.3 km. Earth’s average distance from the Sun is 149,600,000 km, and Earth has one moon. Earth is comprised of rock and metals. Fortunately, for the inhabitants of Earth, Earth has an ozone layer which keeps dangerous solar radiation out and healthy oxygen in. The oxygen contained on
Rating:Essay Length: 1,485 Words / 6 PagesSubmitted: May 14, 2010 -
Planned Parenthood Federation of America
Planned Parenthood Federation of America (PPFA) is the nation’s leading women’s health care provider, educator, and advocate, serving all women, men, teens, and families. PPFA has been serving many American communities for the past 90 years. Planned Parenthood has 860 affiliate health centers all across the country and the biggest organization to improve women’s health and safety, prevent unintended pregnancies, and advance the right and ability of individuals and families to make informed and responsible
Rating:Essay Length: 640 Words / 3 PagesSubmitted: December 2, 2009 -
Planning Coursework-Starch and Amylase
PLANNING COURSEWORK- STARCH AND AMYLASE AIM The aim of this coursework is to investigate the effect of temperature change, on the rate of hydrolysis of starch catalysed by amylase. PREDICTION I think that as the temperature increases, the rate of reaction also increases, to a point when it dramatically decreases. On graph 1, you will see a sketch of the graph which I expect to be the result of the experiment. SCIENCE REASONING I think
Rating:Essay Length: 1,129 Words / 5 PagesSubmitted: April 19, 2010 -
Plant and Animal Cells
I. Introduction All organisms in life are composed of at least one or more cells. Cells are the basic units of life. There are three main features of a cell. First, all organisms consist of one or more cells. Second, cells are the smallest units of life and third, cells arise only from preexisting cells. These three facts are referred to as the cell theory. All cells can be categorized into two basic cell types.
Rating:Essay Length: 1,527 Words / 7 PagesSubmitted: December 27, 2009 -
Plant Cell
Plant Cell Plant cells have many different parts that are need to work together and function as a whole. These parts are the cell membrane which can be compared to a “Condom” due to the fact that is a very thin protective layer that lets certain substances to pass through. Cell wall is a thicker rougher membrane, which gives the plant most of its structure and support, the cell wall also bond with other
Rating:Essay Length: 969 Words / 4 PagesSubmitted: November 10, 2009 -
Plant Cells Vs. Animal Cells
Plant Cells vs. Animal Cells The plasma membrane is the outer membrane of a cell that is composed of a bilayer of phospholipids in which proteins are embedded. The plasma membrane allows certain things to enter the cell and other things not. A cell wall is a layer of material normally made up of cellulose or cellulose-like materials that is outside the plasma membrane of plants, fungi, bacteria and some protests. The nucleus is the
Rating:Essay Length: 414 Words / 2 PagesSubmitted: February 24, 2010 -
Plant Hormones
Plant hormones are specialized chemical substances produced by plants. They are the main internal factors controlling growth and development. Hormones are produced in one part of a plant and transported to others, where they are effective in very small amounts. Depending on the target tissue, a given hormone may have different effects. Plant hormones play an integral role in controlling the growth and development of plants. A plant hormone is generally described as an organic
Rating:Essay Length: 1,538 Words / 7 PagesSubmitted: December 20, 2009 -
Plant Hormones - an Overview of There Functions
PLANT HORMONES: AN OVERVIEW OF THERE FUNCTIONS Submitted By: Kanika Calvin Submitted to: M. Manoharan, Ph.D Submitted: Fall 2005 INTRODUCTION Plant hormones (or plant growth regulators, or PGRs) are internally secreted chemicals in plants that are used for regulating their growth. According to a standard definition, they are signal molecules produced at specific locations, occur in low concentrations, and cause altered processes in target cells at other locations. It is accepted that there are
Rating:Essay Length: 767 Words / 4 PagesSubmitted: April 3, 2010 -
Plant Propagation
When I was younger, I enjoyed working in the garden with my mother. Plants have been a part of my life since I was born. My mother has a huge garden, so I have spent many hours observing the way she plants and watching things grow. This interest and background has caused me to ask the question of how plants grow and how they are propagated. There are different ways in which plants can grow
Rating:Essay Length: 1,419 Words / 6 PagesSubmitted: November 30, 2009 -
Plant Ritual in My Life
I weighed only 6 pounds when I was born. Until 7th grade in middle school, I was always the first one in a row when my class lined up in order of height. I got sick often. It was not that I had suffered any particular disease but it was more like fatigue or cold. My parents thought that it is because my soul was weak. So they took me to the deer farm and
Rating:Essay Length: 357 Words / 2 PagesSubmitted: February 9, 2010 -
Plant Tax Refecltion
Prior to taking Plant Taxonomy, I wasn't aware of all of the possibilities and obstacles I would have to face on the way. I was taught how to correctly identify plants by putting together their characteristics, habitats, range distribution and other relating factors. In order to become more hands on in our process of achieving this, our class went out to Timucuan National Park to collect different species for our labs. This experience every Thursday
Rating:Essay Length: 554 Words / 3 PagesSubmitted: November 15, 2009 -
Plasma Membrane
AP Biology 9/14/01 Plasma Membrane The fluid mosaic of a plasma membrane is made up of a semi permeable double barrier of phospholipids called a bilayer. A phospholipid is a phosphorus element with two fatty acids acting as tails. Due to the hydrophilic property of phosphorous, and the hydrophobic property of the fatty acids, this causes the phospholipids to line up in two rows with the tails in together because there are aqueous solutions on
Rating:Essay Length: 310 Words / 2 PagesSubmitted: November 11, 2009 -
Plasma Membrane
The cell, which is the smallest unit of life, is surrounded by a plasma membrane. The plasma membrane functions somewhat like a wall, as it keeps the internal contents from the external environment. Just like a wall, the membrane is also somewhat permeable, except that the membrane takes a much more active role in determining what is allowed in to the cell and what is kept out. The plasma membrane is a very thin structure,
Rating:Essay Length: 888 Words / 4 PagesSubmitted: March 25, 2010 -
Plastic Surgery
Peale, R. Live Longer Better. New Jersey: Englewood Cliffs. This book shows different ways on how to fight obesity. It provides different suggestions on how people can stay and live a healthy life. Shortt, J. (2004, December). Obesity- a public health dilemma. AORN Journal. This article talks about the rapid increase of obesity cases. It also deals with the risks involve with obesity and the possible results of being obese. It noted, as well, how
Rating:Essay Length: 369 Words / 2 PagesSubmitted: March 26, 2010 -
Plastics
INTRODUCTION TO PLASTICS A material that contains as an essential ingredient one or more organic polymeric substances of large molecular weight, is solid in its finished state, and, at some stage in its manufacture or processing into finished articles, can be shaped by flow. It smells similar like new polyethylene plastic bags. This smell hints either to a sort of smooth plastic coating or is caused when the very fresh latex was sealed into a
Rating:Essay Length: 1,508 Words / 7 PagesSubmitted: May 23, 2010 -
Plate Movement
The earth is made up of many parts with layers of rocks, lava and minerals put equal amount of pressure on all sides of the earth. The earth has many layers such as the inner core outer, core mantle, crust and oceanic plates with each having their own order. Each plate offers to have different materials but the main factor is that the inside of the earth is very hot making it unbearable to go
Rating:Essay Length: 298 Words / 2 PagesSubmitted: May 9, 2010 -
Plate Tectonics
The oceans are a vast part of Planet Earth, taking up 75% of the surface. Though that is a clear and known fact the oceans hold more than just that. Within the realm of the ocean underlying to a depth of which we cannot see, some of the oceans great features are do to a phenomenon called plate tectonics. The theory of plate tectonics has been formed through the idea of a super continent, Pangaea,
Rating:Essay Length: 542 Words / 3 PagesSubmitted: November 23, 2009 -
Plate Tectonics
is a therory of which was developed to explain the observed evidence for large scale motions of the earths crust The theory surpassed the older theory of continetial drift from the first half of the 20th century and the concept of sea floor spreading developed during the 1960s. earth interior is made up of two layers: above is the lithosphere comprising the crust. The lithosphere is broken up into what are called tectonic plates. There
Rating:Essay Length: 517 Words / 3 PagesSubmitted: January 16, 2010 -
Plate Tectonics
Plate Tectonics By; Jason Caruso Period: 6 The beginnings of the theory of plate tectonics date to around 1920, when Alfred accounts of how today's continents were once a large supercontinent that slowly drifted to Wegener. The German meteorologist and geophysicist, presented the first detailed the positions there at today. Others created evidence, but continental drift did not attract wide interest until the late 1950s.When scientists found the alignment of magnetic particles in rock
Rating:Essay Length: 1,221 Words / 5 PagesSubmitted: May 16, 2010 -
Plate Tectonics and the Scientific Method
Plate Tectonics and the Scientific Method The scientific method is a method used in certain fields of study to confirm or disprove of what is being looked at. It is a way of knowing and attempting to understand something that may seem out of our reach. This method can be used for any type of theory based claims not only in science, but in other fields as well. In this particular case, the scientific method
Rating:Essay Length: 1,308 Words / 6 PagesSubmitted: April 5, 2010 -
Plate Tectonics Explained
The interior structure of Earth is chemically divided into an outer solid crust, the mantle, a liquid outer core, and a solid inner core. The core is largely composed of iron, along with nickel and silicon. Other lighter elements are usually in the crust. The core is divided into two parts, the solid inner core and the liquid outer core. The inner core is thought to be solid and primarily made up of iron and
Rating:Essay Length: 1,395 Words / 6 PagesSubmitted: December 18, 2009 -
Please Relate Your Interest in Studying at Georgetown University to Your Future Goals. How Do These Thoughts Relate to Your Chosen Course of Study?
I plan to prepare for medical school by taking the required undergraduate courses for admission. However, because the University allows individuals planning on continuing pre-professional studies to select a major within any department of the college, I plan to declare a major in psychology with a concentration then in the field of neurological research. My life has been greatly influenced by the fact that I have twin cousins afflicted with severe autism. Therefore, my interest
Rating:Essay Length: 452 Words / 2 PagesSubmitted: May 1, 2010 -
Pluralism
There are 4 diff. schools of thought about pol. Elits and how power has actually been distributed: Marxist, power elite, bureaucratic and pluralist. Marxist view is the view that gov. is dominated by capitalist who control the economic will control the politic one. Power elite view is the view that the gov. is dominated by a few top leaders who make the key decisions w/out reference to popular desires. Bureaucratic view is the view that
Rating:Essay Length: 254 Words / 2 PagesSubmitted: May 17, 2010 -
Pluto
In the outer limits of our solar system there is a planet unlike any other, Pluto. Pluto was discovered in February of 1930 by an American astronomer, Clyde Tombaugh. It is the only planet to have been discovered by an American. All though we have known of the existence of Pluto for over thirty years now, there are still many mysteries surrounding this celestial body. Being the farthest planet has made it difficult to study
Rating:Essay Length: 1,516 Words / 7 PagesSubmitted: February 21, 2010 -
Pluto's Characteristics and Discovery
Introduction My project is about Pluto. It is the ninth planet from the sun and the smallest. Pluto is also the planet least known about, so in the following pages you will read the information gotten by scientists over the last years. PlutoЎ¦s Characteristics and Discovery Pluto as you already must know is the ninth planet and the smallest. Its surrounded by only a thin atmosphere and has a solid, icy-rock surface. Pluto is the
Rating:Essay Length: 653 Words / 3 PagesSubmitted: June 13, 2010 -
Pluto: A Planet?
Pluto: A Planet? Many issues have arisen from the debate whether or not Pluto is a planet. Some astronomers say that Pluto should be classified as a “minor planet” due to its size, physical characteristics, and other factors. On the other hand, some astronomers defend Pluto’s planet status, citing several key features. Indeed, most of the problem is that there is no formal definition of a planet. Furthermore, it is very difficult to invent one
Rating:Essay Length: 1,641 Words / 7 PagesSubmitted: December 28, 2009 -
Pluto: No Longer a Planet
Once known as the ninth planet of the solar system, Pluto is now the second-largest dwarf planet. Composed primarily of ice and rock, Pluto took part of our Solar System for 76 years. It was discovered on January 23, 1930 by Clyde Tombaugh. Tombaugh was an American astronomer who worked at the Lowell Obeservatory. Tombaugh had been working on a project when he came across a moving object in photographs he had taken of
Rating:Essay Length: 548 Words / 3 PagesSubmitted: January 2, 2010 -
Polar Bears
Habitat Polar bears prefer to live in extremely cold artic climates. They live only in the Northern Hemisphere, on the arctic ice cap, and they spend most of their time on coastal areas. Polar bears are widely spread in Canada, extending from the northern arctic islands south to the Hudson Bay area. They are also found in Greenland, on islands off the shore of Norway, on the northern coast of the former Soviet Union, and
Rating:Essay Length: 715 Words / 3 PagesSubmitted: March 8, 2010 -
Police Relations
Broken Windows James Q. Wibson and George L. Kelling In the 1970’s New Jersey announced a “Safe and Clean Neighborhoods Program,” this program was designed to improve the community in twenty-eight cities. A Major part of this program was to take the police from patrol cars to foot patrol. Even though this left foot patrol men at a disadvantage it reduced mobility, they also had trouble getting to calls fast enough, and during cold weather
Rating:Essay Length: 796 Words / 4 PagesSubmitted: May 21, 2010 -
Political Correctness: The End of Intelligent Thought?
Political Correctness: The End Of Intelligent Thought? Political correctness is a political ideology, nothing more. It cannot be correct unless it is linked to genuine transformation. First, I will examine the origins and causes of PC in an attempt to get a clear understanding of what this movement truly is. Second, I will examine the possible negative effects that political correctness can have on our society. And finally, I shall discuss why this cultural ideology
Rating:Essay Length: 2,604 Words / 11 PagesSubmitted: May 5, 2010