The Science of Transportation: Ancient World: The Wheel: • How do they work? Wheels work by rolling along a surface. The curved surface of the wheel reduces the friction between the two surfaces due to a decrease in surface area. With less friction it is much easier to move an object. This is because rolling friction is much weaker than sliding friction. • How did they come to be? The wheel was invented in prehistoric times; as the oldest example of a wheel yet found is from the region of
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Eukaryotic Cell Division Cells must continually grow and divide in order for an organism to grow‚ maintain its structure‚ and reproduce. Cell division involves the replication‚ or copying‚ of the complete set of hereditary information. It also involves the equal distribution of the genetic material in the resulting cells. The hereditary information of organisms is contained in large molecules called deoxyribonucleic acid‚ DNA. Objectives Upon completion of this laboratory
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Derricka Joe Period 5 1 Oct.‚ 2014 Lab Experiment One: Physical Properties Lab Analysis: For our first unknown‚ we observed the color and odor of the substance. The substance was a clumpy‚ white‚ crystal-like substance and it smells like new plastic. When we tested the solubility in water it resulted insoluble and in ethanol it resulted soluble. This substance could not be tested for electrical conductivity because the water was insoluble. We then tested for the PH value and it was neutral. The
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Evelyn Ramos CHEM LAB 201-003 Professor Ruddock Experiment #4 - Chemical Reactions Performed: 3/6/13 DUE: 3/13/13 Pre Lab Questions: 1. Before you can write a chemical equation‚ what must you know? You have to know what the products and reactants are. 2. What observations might you make that suggest that a chemical reaction has occurred? If a gas is produced or precipitates are formed that indicates chemical reaction. Also‚ if color changes occur or
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Lab 2: Animal and Plant Cells Purpose: To examine the differences between single cell and multi cell organisms in terms of Animal and Plant cells. Question: What are the differences between multi and single celled plant and animal organisms? Prediction: Spirogyra Cell: The parts of the spirogyra cell that will be visible under the microscope will be; cell wall‚ cell membrane‚ nucleus‚ chloroplasts‚ vacuole and cytoplasm. Banana Cell: The parts of the banana cell that will be visible
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Experiment 1 Cyanobacteria Oxygen Production Through Photosynthesis Date Performed: September 2‚ 2014 I. Introduction a. Background Cyanobacteria or blue green algae are renowned for their tolerability and susceptibility even in wide range of environmental conditions‚ a characteristic of many primitive organisms. CNB are believed to be the agents of autotrophic origin of life thus they probably represent the survivors of the earliest photosynthetic plants‚ along with photosynthetic and chemosynthetic
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2 discuss how body systems interact to ensure the body functions and grows LO2 Understand the relationship between body functioning and relevant detailed anatomy and physiology 2.1 explain normal body responses to everyday activities 2. 2.2 discuss how body responses are explained by cellular and tissue structure and physiology 3. 2.3 explain how the body coordinates its internal activities LO3 Understand how routine data collected in health and social care informs the planning of care for
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products produced. The uncertainty of this this measurement is ± 1 product. In order for this experiment to be controlled‚ many variable were identified and held constant. If these variables were not to be held constant than the findings of this experiment would be meaningless because there would be no way of desiring if the independent variable was the cause of the changes which were recorded In this experiment‚
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Experiment E: Post lab Natasha Buckiewicz (130361780) IA: Matt Halloran Due: November 26‚ 2014 1. This experiment followed GCP number 8 which is reduce derivatives. This experiment did not use unnecessary derivation since the reaction was not modified in any way. No additional reagents were required so it did not generate a lot of waste. 2. Safer solvents and auxilaries (GCP #5) was not used in this experiment since the experiment used a solvent to complete the reaction. The reaction used both
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American University of Science & Technology Department of Laboratory Sciences and Technology CHE: 205L: CHEMICAL ANALYSIS LABORATORY Experiment IV Redox Titration Name: Helena Al Jawhary / Partner’s Name: Eyad Aridi Instructor’s Name: Dr Juliana El Khoury Date of experiment: 10/3/2013 Redox Titration Objective: • To learn some technique in volumetric analysis: Redox titration. • To review the stoichiometry of an oxidation-reduction reaction. • To practice the titration
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