Light that is visible to the human eye is a small portion of the electromagnetic spectrum which can vary in colour based on the wavelength of what is being seen at any particular time. This visible light has a primary function of causing electrons to become more active with higher energy rates. The colour that is seen revolves around the size of this portion which is noted as the wavelength. White light is a culmination of all colours which is the cause of it being the brightest. Furthermore‚ when
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Heart Rate Experiment Introduction: The heart rate measures the contractions of your heart and is a requirement for life. The heart uses four chambers. The right and left-lower chambers are called ventricles‚ and right and left-upper chambers are called atria. These four chambers complete two cycles that replenish the tissues with oxygen and get oxygen from our lungs. The heart rate is measured in beats/ minute and a “beat” is when the lower chambers are (two ventricles) contract. This
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Results Line of Best Fit Graph Error Bars Graph Gradients Graph Analysis • Error Bars Analysis Evaluation • Improvement Assessment • Improved Experiment. • Reliability References Introduction: For this data analysis project‚ I conducted and experiment to investigate how the concentration of an acid affects the rate of the reaction. I have set up the experiment’s equipment as shown on figure 1. As you can see by figure 1‚ I have used the reaction between sodium thisoulphate
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Industry structure affects intensity of competition in the following ways: Opportunity potential – Profitable market is likely to attract firms to invest in available opportunity‚ the more the number of firms in the market‚ the more intense of the competition. Ease of entry – When entry into an industry is relatively easy‚ more firms are likely to invest in that. ‚ including some marginal ones‚ are attracted to it. However‚ committed members of the industry may adopt strategies to discourage potential
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exercise on heart rate/ breathing rate? Justification Pulse is an ongoing wave of pressure in the arteries‚ caused by pumping of heart. Pulse can be measured on the wrist‚ neck‚ back of the knee or any other pulse point where arteries run close to the surface of the skin and compress on the bone. Pulse rates vary from person to person. Your pulse is lower when you rest and increases when you exercise. More oxygen rich blood is needed by the body when exercising so knowing how to take your pulse
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Bubbling Cabomba pondweed Teaching Notes Introduction Like many other water plants‚ Cabomba has specialised tissue called aerenchyma that allows gases to diffuse inside the plant. Aerenchyma provide buoyancy and allows oxygen transport to the submerged roots that may otherwise be in hypoxic (low oxygen) conditions. If you cut through the aerenchyma‚ oxygen can escape. This can be made use of this in the classroom to show how the rate of photosynthesis is affected by light intensity or by the colour
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spectrophotometer is an instrument that measures the quantitative amounts of light of different wavelengths absorbed and transmitted by a pigment solution (Mitchell‚ Reece). The spectrophotometer includes a light bulb‚ a reflector‚ and a detector. When a sample is in place and the chamber lid is closed‚ light from the light bulb passes through it. The detector measures the amount of light transmitted. The white light from the bulb is separated into different wavelengths by reflecting the beam
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The effect of light quantity on photosynthesis of green land plants Introduction Photosynthesis is the process of converting light energy into chemical energy (Hoober 1984). Pigments within chloroplasts‚ primarily chlorophyll‚ absorb the incoming solar energy which excites their electrons (Hoober 1984). These pigments exist in photosystems in the thylakoid membrane of the chloroplast (Ladiges et al.2010). As the electrons return to ground level‚ they are captured by the electron acceptor in the
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out if the color of light a plant receives‚ affects the plant growth. Light is electromagnetic radiation that comes in waves‚ the basic units of which are called photons. Plants use light to turn carbon dioxide into sugars necessary for growth‚ a process called photosynthesis. Sunlight is a full spectrum of different wave lengths of light. Seen through a prism‚ this spectrum turns into bands of color: red‚ orange‚ yellow‚ green‚ blue‚ indigo and violet. (Stern‚ 2004). The light of the sun is white
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Factors Affecting Photosynthesis Low light intensity lowers the rate of photosynthesis. As the intensity is increased the rate also increases. However‚ after reaching an intensity of 10‚000 lux (lux is the unit for measuring light intensity) there is no effect on the rate. Very high intensity may‚ in fact‚ slow down the rate as it bleaches the chlorophyll. Normal sunlight (usually with an intensity of about 100‚000 lux) is quite sufficient for a normal rate of photosynthesis. Open and Closed
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