Senior Science Half-Yearly Revision 1. Surface tension - A property of the surface of a liquid. It is what causes the surface portion of liquid to be attracted to another surface‚ such as that of another portion of liquid. Surface tension is caused by cohesion (the attraction of molecules to like molecules). Since the molecules on the surface of the liquid are not surrounded by like molecules on all sides‚ they are more attracted to their neighbours on the surface. Mercury has a high surface
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Introduction Bansky is a famous London street artist. Bansky has done many illicit stencil and graffiti art. Graffiti is a scribble or drawing done with a spray paint can. Stencils are a sheet of paper or cardboard with cut outs to make a guide‚ stencils are used to make art faster and easier with spray paint cans when done the art work has been stenciled. Bansky is unverified and has gotten away with all his illicit art work. Bansky does many politically based artwork. Bansky has a network of 2
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Heated-free liquid. This method uses a heated saltwater (saline) solution to remove the endometrium. Microwave. This method uses high-energy microwaves to heat up the endometrium to remove it. Thermal balloon. This method involves inserting a catheter with a balloon tip into the uterus. The balloon tip is filled with heated fluid to remove the endometrium. The procedure may vary among health care providers and hospitals. What happens after the procedure? Your blood pressure‚ heart rate‚ breathing
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Gold is widely used in modern day medicine to treat disorders. This is because gold is very resistant to bacteria. Bacteria are microscopic single-celled organisms. Bacteria are prokaryotes‚ meaning the entire organism consists of a single cell with a simple internal structure. The DNA of a prokaryote is neatly packed in the nucleus. The bacterial DNA floats freely in a twisted threadlike mass called the nucleoid. Gold is unaffected by almost everything. The only materials that can affect gold are
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committees (PACS) and Super PACS. Leaking information to the press is known normally as a trial balloon. If a candidate’s management feels the need to break a story out and test the waters of the public’s reaction in order to change a policy under consideration‚ they would have a campaign worker intentionally give a reporter an “off the record” interview or quote on how the candidate feels. These trial balloons would almost always be leaked later in the workweek so that the press can come up with an agenda
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determine if there was a large or small quantity. The tribe’s inability to express a word for an exact number was also shown in another activity. They were required to match a certain number of balloons with an amount of thread that was shown. The only way the Piraha could do so was to physically place the balloons in line next to the thread. Frank’s experiments proved that it is either difficult or impossible for someone to remember a large number without thinking of its name. In the situation with the
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Imagine someone washing their hands and struggling to wash off the soap due to the low water pressure from the faucet. They figure out there is a blockage or narrowing in the pipes‚ restricting the flow of water. Although humans do not have a plumbing system in their bodies‚ they do have pipes that allow blood to move from the body to the heart and back to the body‚ known as blood vessels. Similar to the faucet situation‚ the human heart can have a narrowed or blocked pipe that obstructs blood flow
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Questions: 1. What do you learn from Ben Leach’s article about the issues and concerns regarding the building of wind farms? (8 marks) 2. Explain how the headline and picture are effective and how they link to the text. (8 marks) 3. Explain some of the thoughts and feelings Claire Francis has during the storm. (8 marks) 4. Compare the different ways in which language is used for effect in the two texts. Give some examples and analyse the effects. (16 marks) Answers: 1. From Leach’s
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the compression stroke resulting the increase of pressure and temperature of the charge. The spark plug‚ usually situated at one end of the combustion chamber‚ ignites the air-fuel mixture and the ensuing flame spreads like a slowly inflating balloon. There is an
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1. Define land resource surveying methodology. Identify the two approaches in land resource surveying methodology. 2. Discuss the contributions of Aristotle‚ Louise Deguerre‚ Argo‚ Loussedat and Deville in enriching the science of topographic surveying. 3. The atmosphere influences EMR in two ways. Discuss them. 1. According to Professor Masaka (2011) Land resource survey methodology can be defined as the starting point for any natural resource management policy has to be an inventory of
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