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Science Essay Examples

Amplitude and period relationship

Oscillation is a motion, which repeats itself. A simple harmonic motion is when object moves back and fourth within a stable equilibrium position. In a perfect situation, where friction plays no part the ball will continue oscillating continuously. However in real life this is not possible, instead objects face damping due to friction. Any system…

The relationship between the angle of a slope incline and the acceleration

As the angle of the slope incline increases, the acceleration of the model cart moving down it will also increase. I have predicted that acceleration is directly linked with the angle of the slope on which the object is moving. When coming up with this hypothesis, I asked myself the following question, “what forces actually…

The Refraction of Light Lab

The results we obtained show that on average, we calculated a sin i over sin R to be 1.34 units. Also we can say that as the angle of incidence increased, the angle of refraction tended to increase proportionally. As the sin of i increased, the sin of R also increased. Below you can see…

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The letter box

John Searle’s ‘Chinese room’ argument attempts to explain the difference between working machines and the human mind. Let us imagine that an English speaking man who knows no other language has been put in a small room. On the wall is a letter box and on the floor is a book of rules and a…

Does the Mass of a Material Affect it Aerodynamics?

Does the Mass of a Material Affect it Aerodynamics? There are five basic steps of the scientific method, step one Is to make observations step two is to come up a hypothesis. Step three is to make a experiment to test the hypothesis, step four Is to test the hypothesis and step five Is to…

Experiment Onion Cell-Biology

Obtain a sheet of lens tissue paper with lens cleaning solution and clean all the lenses of your microscope gently. Obtain a microscope glass slide. Hold It by the edges and wet It with water. Wipe both sides dry with a paper towel. Always hold the slide by the edges or you will leave fingerprints…

Gadgets: Time and Elementary Pupils Definition

Terms Addicted. In this study, it means to devote or surrender to something habitually or obsessively, addicted with gadgets. Attribute. This refers to an object closely associated with or belonging to a specific person, thing. Engage. This was used in this study to attract and hold by influence or power. Extreme. In this study, it…

Strong evidence

One definition of knowledge is true belief based on strong evidence. What makes evidence “strong” enough and how can this limit be established? The Oxford Dictionary states evidence as “Anything that gives people reason to believe in something” . This is however incorrect, as one can provide strong evidence and not change people’s beliefs, if…

Micro lab quiz

The Gram Stain Compare and contrast simple and differential stalling techniques. Simple Stalling Simple stalling Is useful In determining the basic morphology of an organism. Simple stalling Involves only one reagent I. E. Crystal violet, basic fuchsia, or methyl blue. Simple dyes used to stain bacteria have a positive charge cationic (+), therefore, they are…

Disappointment and frustration are all emotions

“A fool sees not the same tree as the wise man sees. “-William Blake. This gives rise to the problem of perception. Different people see and perceive different ideas, objects and items differently, leading to varying beliefs. Perception is basically awareness of things through our five senses; touch, taste, smell, sight and sound. Though perception…

Sodium Borohydride Reduction: Diphenylmethanol from Benzophenone

Megan Entwistle, Maria Amos, and Paul Golubic CHEM 0330 Organic Lab 1 Sodium Borohydride Reduction: Diphenylmethanol from Benzophenone 11/16/11 Introduction Redox (shorthand for REDuction-OXidation) reactions are chemical reactions in which the oxidation state (or oxidation number) of atoms has changed. Oxidation can be observed through the loss of electrons or an increase in oxidation state…

Conservation of Momentum Experiment

Propagation of Uncertainties for Velocity of Pucks for Final Momentum:  Cue Puck: Stationary Puck: Since we have done the have already calculated the percent uncertainty for the velocity of the pucks, we can now add these uncertainties up. Final Percent Uncertainty for Average Initial Velocity of Cue Puck: 1.136…%+0.180…%=1.317% Final Percent Uncertainty for Average Initial Velocity of Stationary Puck: N/A…

Nichrome wire by determining its resistivity

Metals have low resistance due to their delocalized field of electrons. However, different metals have different values of resistance. In this experiment, the students were given a spool of Nichrome wire to determine its diameter. Nichrome, as the name suggests, is an alloy of Nickel, Chromium and Iron. The resistance of a conductor depends on its…

Ap Biology Lab Report 4

Introduction This study was performed in order to gain more knowledge on mitosis and meiosis. This lab was done by observing mitosis in plant and animal cells, comparing the relative lengths of the stages of mitosis in onion root tip cells, stimulating the stages of meiosis, observing evidence of crossing-over in meiosis using Sordaria fimicola,…

Specific Heat Capacity

In this experiment, we are going to use a calorimeter (a solid metal block of aluminium). And we are going to expose it to different temperatures and measure the difference in temperature over time. We will also measure the changes in electric properties from the heater over time: Volts and Amperes. In order to get more…

Translocation

Translocation A. The Munch pressure flow model The Principal of Pressure-Flow Model of Phloem Transport The Munch pressure-flow model is an explanation for the movement of organic materials in phloem . By the Munch pressure-flow experiment, two dialysis tubings are connected by a glass tube. The dialysis tubings only permeable to water or particles which…

Roller Coasters and Their Theory

2010 NAME: CAROLENA SEEREERAM DINESH TEELUCKSINGH DEVIANN SINGH VINCENT BAHADUR KERLON MOORE INSTRUCTOR: MR. RISHI RAMPERSAD COURSE: ENGINEERING SCIENCE COURSE: ENGINEERING SCIENCE CLASS: COMPUTER ENGINEERING (YEAR 1) INSTRUCTOR: RISHI RAMPERSAD GROUP MEMBERS: CAROLENA SEEREERAM DINESH TEELUCKSINGH DEVIANN SINGH VINCENT BAHADUR KERLON MOORE ABSTRACT A roller coaster is an amusement park ride where passengers sit in…

Standing Waves on a String

The objective of this experiment is to study the resonance modes of a stretched string by measuring directly in order to test the theoretical formula which relates the tension in the string to its length, mass, resonance frequency, and mode of vibration. Definition of Standing Waves: An oscillation pattern that has an outline which is resulting from…

Circular Motion

Circular motion is the motion that links velocity, mass, and radius of the string of an object. If any one of the factors is changed, the motion of the object gets affected or the velocity/acceleration gets affected. All objects going through circular motion experience a force called the centripetal force. Centripetal force is the force…

Hooke's Law

The aim of this experiment is to investigate Hooke’s law for simple springs of rubber. The relationship between a load force and a light spring (F=k. x) was first determined by Robert Hooke in the 17th century. Where F is the force applied to the spring, k is the spring constant, and x is the…

The drop time of the paper helicopter

If the mass of the paper helicopter increases, then the drop time of the paper helicopter will decrease because the paper helicopter with the greater mass will take a longer time to reach terminal velocity ( when there is a balance of forces and thus zero acceleration) which results in a shorter drop time because…

Hydrogen spectrum

A hydrogen discharge tube is a device that can trap small amount hydrogen in a sealed tube of glass, and if potential difference is applied to that tube an emission of an atomic spectrum can be produced. The emission of the spectrum is produced from the excitation of the hydrogen electron (by the voltage) to…

Rubber bands

The aim of this experiment is to find how the amount of stretching, when shooting a rubber band, affects the length of the shot. Hypothesis When you stretch an elastic rubber band, you store potential elastic energy inside it. When the rubber band is released, the potential elastic energy will be transformed into the same…

Latent Heat of Vaporization of Water

Uncertainty in measuring time was ±0. 01s according to the stopwatch but while measuring mass you have to first look at the time in stopwatch and then the mass in the electronic balance and because humans cannot react instantly it is estimated to be ±1s. Uncertainty in measuring mass of the water was ±0. 1g…

Physics-Inclined Plane Lab

If an object is placed upon a surface that is inclined at a certain angle then that will decide the acceleration in which the object is going down the inclined plane. When looking at an inclined plane it is important to see what forces are acting upon it to see what the object is doing….

How can visual illusions illustrate top down processes in perception

There are many different types of visual illusions, many of which can be shown to illustrate different mental processes in perception. Types of illusion including those involving ambiguity, distortion and fiction can be seen to be processed using varied mental methods and can be categorised into physical, physiological, and cognitive illusions. Physiological, or bottom up…

The structure of keratin and collagen and show how their structures are suited to their biological functions

Keratin and collagen are very vital within the body’s structure; both are very similar in nature, being that they derive from amino acids, which make up their respective proteins. They both fall under a group of particular proteins known as scleroproteins or fibrous in nature. Majority of their structure consist of left-handed helix structures1. Scleroproteins…

Isolation and Analysis of Essential Oils Using Gas Chromatography

Isolation and Analysis of Essential Oils using Gas Chromatography Lyndon Justin T. Guzman Institute of Chemistry, University of the Philippines, Diliman, Quezon City Date Performed: February 2; February 4, 2011 Date Submitted: February 18, 2011 Abstract The purpose of this experiment is to isolate the essential oil from eucalyptus leaves as a pure compound; moreover,…

Chapter 1 great review of the basic anatomical areas of the body 1. Metabolism, anabolism, catabolism 2. ICF, ECF 3. True 4. False 5. False 6. Parasagittal 7. D, effectors 8. A, differentiation 9. C, hypogastric 10. C, 3 11. Axillary-armpit, inguinal-groin, cervical-neck, cranial-skull, oral-mouth, brachial-arm, orbital-eye, gluteal-buttock, buccal-cheek, cixal-hip 12. 1 superior, 12 superficial,…

The selfish gene theory

Therefore, if people acted purely in their self-interest as relayed in the often misunderstood purest form of the selfish gene theory, this person would not contribute to the common account in the first place and would reap the rewards of everyone else’s contribution. Contributions to the common fund started at approximately 50% of…

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