Science Essays Examples For College & High School Students in PDF

14278 total results

An Analysis of the Experiment with an Electromagnet When Picking up Steel Pins (1138 words, 4 pages)

AimQuestionWhat is the effect of increasing the current, on the effectiveness of an electromagnet when picking up steel pins? Originally the idea was to count the pins that the electromagnet picked up, but this proved too difficult. Because of this, we decided to weigh the pins that had been attracted ... Read More

An Overview of the Experiment, the Effect of Osmosis on a Potato (1787 words, 5 pages)

PlanningI am investigating the effect of osmosis on a potato. Osmosis is the diffusion of water down a concentration gradient through a semi permeable membrane. I am investigating the effect of water concentration on the potato chips. This means that I will put potato chips into salt solutions of different ... Read More

An Introduction to the Theory of the Universe: The Big Bang Theory (3658 words, 6 pages)

A THEORY OF THE UNIVERSE Abstract This paper presents a new theory of the universe which updates the Big Bang Theory, and explains more of the phenomena that have been observed over the past 120 years. INTRODUCTION Since the 1880's, scientists have observed that light coming from distant stars has ... Read More

An Overview of the Experiment, Osmotic Activity in Potato Cylinders (1963 words, 4 pages)

Osmotic activity in potato cylinders Skill Area P Planning Aim To investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato cylinders. Hypothesis Osmosis is defined as the net movement of water or any other solutions molecules ... Read More

An Introduction to the Dependant Variable and the Resistance of the Wire (1447 words, 4 pages)

The dependant variable is the resistance of the wire. The Key Variables are1. Wire length2. Material3. Wire diameter4. Temperature5. Wire Density Wire lengthIf the length of the wire is increased, then the resistance will increase. This is due to the electrons having a longer distance to travel and so more ... Read More

An Introduction to the Planning Experimental Procedures Equipment (1699 words, 4 pages)

I am measuring the rate of reaction (how fast a reaction takes) of sodium thiosulphate and hydrochloric acid. There are different variables I could use to see the change in the rate of reaction. These include temperature, concentration or catalysts. I am going to do two experiments, one changing the ... Read More

An Introduction to the Life of Marie Curie a Physicist and Twice Nobel Laureate (250 words, 1 pages)

Curie, Mariephysicist and twice Nobel laureate, best known for her Curie, Marie, ne Maria Sklodowska (1867-1934), French work on radioactivity, with her husband Pierre. Maria Sklodowska was born in Warsaw, Poland, which was then part of the Russian Empire. Her father, an ardent Polish nationalist, taught mathematics and physics at ... Read More

An Overview of the Experiment, Sugar Solution on the Amount of Osmotic Activity Between the Solution and a Potato Chip of a Given Size (2721 words, 7 pages)

Aim To investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato chip of a given size. Hypothesis Osmosis is defined as the net movement of water or any other solutions molecules from a region in which ... Read More

An Analysis of Varying Concentration of a Certain Sugar Solution on the Amount of Osmotic Activity (2725 words, 7 pages)

Skill Area P Planning Aim To investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato chip of a given size. Hypothesis Osmosis is defined as the net movement of water or any other solutions molecules from ... Read More

An Overview of the Experiment, Osmosis Occurrence in a Potato (2716 words, 8 pages)

Aim My main aim in this experiment is to find out if osmosis occurs in a potato, and how it affect the potato in different molar solutions of sucrose and water. Apparatus Stop Clock to time our experiment Cutting tile to cut the potato on Knife to cut the potato ... Read More

An Argument in Favor of Legalization of Cloning Because It Would Benefit Society (1349 words, 2 pages)

The practice of cloning can be used to benefit society and therefore should be legalised. Ever since the cloning of the first adult sheep, Dolly, the idea of cloning has become a major issue and the subject of many debates. Many people are afraid of the idea of cloning because ... Read More

An Overview of the Experiment, Analyzing the Fat in Five Different Type of Milk Products (838 words, 3 pages)

I am going to use five different kinds of milk as I think that this is a suitable number to give me a varied amount of fat concentrations. My different milks areType of milkGrams of pat per 100mlWhipping cream38Single cream18Full fat milk3.6Breakfast milk5.2Semi-skimmed milk1.7 They will be kept at room ... Read More

An Overview of the Experiment, the Resistance of a Piece of Wire (2609 words, 7 pages)

The four factors that affect the resistance of a piece of wireLength,Diameter or thickness,Temperature andThe type of metal.From thinking about how I would do this investigation and the outcome of it, I decided to use the length of the wire as the variable. Aim The aim of my investigation is ... Read More

An Overview of the Experiment, the Fermentation Occurrence of Yeast Merging with Solution of Sugar (1946 words, 3 pages)

Planning As a culture of yeast is merged with solution of sugar, a reaction called fermentation occurs. As products, ethanol and carbon dioxide are produced, in form of liquid and gas respectively. The reaction follows this equation Glucose solution YeastCarbon dioxide Ethanol (Energy) And as one of the products is ... Read More

An Introduction to the Experiment on the Rate of Power and Energy (781 words, 3 pages)

Introduction Power is the rate at which energy is converted from one form to another and is measured in watts (W), which is equivalent to joules per second (Js). In this experiment, I am working out the power of two people, firstly working out the gravitational potential energy as they ... Read More

An Introduction to an Analysis of the Electricity (1524 words, 2 pages)

Planning Aim To find the amount of copper gains or loses on the electrodes using different amount of current each time during electrolysis. How does the changing of the current and surrounding temperature effects on the electrodes? Hypotheses Does the changing of the current matter to the amount of copper ... Read More

An Analysis of the Genetic Modification of Animals and Plants (983 words, 4 pages)

Since the discovery of DNA in the late 1950s, the possibility of geneticmodification of animals and plants has become a reality. However is the reality ofdesigner babies going to far? The term designer baby refers to the geneticmodification of the child in its early fetal life. The issue has been ... Read More

An Overview of the Experiment, Enzymes and the Effect of Concetration (452 words, 2 pages)

Background Knowledge IntroductionEnzymes are biological catalysts made up from protein. As we know, catalysts are substances that speed up the rate of a reaction without itself being used up. An enzyme has an active site, which has a unique shape into which only a substrate of the exact same unique ... Read More

An Analysis of the Genetic Engineering for the Virus Resistance of the Plants in Agriculture (849 words, 3 pages)

We have now come to a time in history when we know the most we have ever been able to dream about knowing and sometime in our life times we are going to recreate the record books with some of the things we are now capable to do as human ... Read More

A Description of the Tarantula and Arthropods in Biology (1956 words, 3 pages)

The Arthropods, a term for invertebrate animals, such as crustaceans, millipedes and centipedes, insects, and arachnids, constitute the largest phylum in the animal kingdom with more than 900,000 known species found in almost all habitats. Out of this number there are over 30,000 recognised species of spiders throughout the world ... Read More

An Overview of the Experiment, Alternating Current and the Field Direction (2358 words, 3 pages)

Planning Aim and hypotheses According to Fleming's Rule, electricity is generated when movement occurs in the magnetic field. Alternatively, switching direction of the magnetic field also works. Alternating current is a good way of alternating the field direction. The electricity generated, of in the other words, the electromotive force, is ... Read More

An Overview of the Experiment, the Water Content of Plants Variation on Environmental Conditions (2442 words, 7 pages)

Scenario Plants in the soil have their roots in a dilute solution of mineral ions. When they are suddenly flooded with seawater, concentration of which is 0.3 molar Sodium Chloride, they are observed to wilt and become flaccid. Aim The aim of this experiment is to investigate the movement of ... Read More

An Introduction to the Evolution of Solar Systme and the Theories of the Origin of the Moon (1574 words, 2 pages)

Evolution of solar system Theories of The Origin of the Moon The Moon is the only natural satellite of Earth. The distance from Earth is about 384,400km with a diameter of 3476km and a mass of 7.351022kg. Through history it has had many names Called Luna by the Romans, Selene ... Read More

An Introduction to How the Electrical Resistance of a Wire Changes in Relationship to It’s Length (1595 words, 7 pages)

Physics Investigation Of Resistance Aim to investigate how the electrical resistance of a wire changes in relationship to its length. Prediction I think that as the length of the wire increases so to will the resistance of it. I also believe that the rate at which the resistance of the ... Read More

An Overview of the Experiment, Calcium Carbonate and Hydrochloric Acid Reaction Rate (876 words, 3 pages)

Calcium carbonate and hydrochloric acid react together. Plan an investigation to examine the factors that effect the reaction rate between them.I am trying to find out what affects the reaction rate of calcium carbonate and hydrochloric acid. Things that affect the reaction rate are the temperatures of the hydrochloric acid, ... Read More

An Introduction and an Analysis of the Electromagnetic Spectrum (781 words, 2 pages)

The electromagnetic spectrum is made up of electromagnetic waves such as light, radio waves and infra-red. Although they travel at the same speed the frequency and wavelengths of each group is different. Although they travel at the same speed (300 000kms in a vacuum) the frequency and wavelengths of each ... Read More

An Introduction to the Aim of the Science Investigation – the Location of Stomata (2356 words, 6 pages)

AimThe aim of this science investigation is to find out where the stomata are located, on the upper or lower epidermis of a leaf. PredictionMy prediction is that most of the stomata are found on the lower epidermis of a leaf. I have based this prediction on the function of ... Read More

An Introduction to the Grignard Reagents as an Important Class of Extremely Reactive Chemical Compounds (1330 words, 3 pages)

Grignard reagents are an important class of extremely reactive chemical compounds used in the synthesis of hydrocarbons, alcohols, carboxylic acids, and other compounds. Chemically, a Grignard reagent is an organic magnesium halide dissolved in a nonreactive solvent (typically dry diethyl ether). The substance is made up of an organic group, ... Read More

An Introduction to the Resistance a Force Which Opposes the Flow of an Electric Current Around a Circuit (1503 words, 4 pages)

Introduction Resistance is a force which opposes the flow of an electric current around a circuit so that energy is required to push the charged particles around the circuit. The circuit itself can resist the flow of particles if the wires are either very thin or very long. e.g. The ... Read More

An Overview of the Experiment, Killing a Bacteria With Antibodies (920 words, 4 pages)

The background knowledge that I have in order to carry out this experiment is as followed1.That the bacteria E.coli is a harmful bacterium that infects and causes serious damage to humans, who usually get it from under cooked food.2.That, in order to kill bacteria you need to use antibiotics. Antibiotics ... Read More

Science Essay Examples