By the 1920s‚ New York had become a world centre of manufacturing and culture. It was home to several million residents and welcomed domestic migrants by road and rail and international immigrants by boat‚ who “fed the city’s thriving economy.” (“America on the Move”) This influx of new people‚ an intermingling of cultures and languages‚ was only reinforced by the great migration of African Americans‚ beginning around 1915‚ moving from the southern states to major northern cities‚ fuelled by “a combination
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Plan I plan to investigate how light intensity affects the rate of photosynthesis in pondweed. The rate of photosynthesis will be measured by the number of bubbles given off (considering that oxygen is produced as a waste gas during photosynthesis). The light intensity is measured by the distance between the lamp and pondweed. Fair test: Fix: the amount of pondweed‚ the amount of water and sodium hydrogen carbonate solution in the test tube‚ the time allowed for each experiment Change: the
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We can see through the results that there isn’t a normal proportional relationship between the wavelength of the light and the rate of photosynthesis and instead it starts relatively high then decreases and increases again. The colour red gives the highest rate of photosynthesis (89 bubbles per minute) with blue giving the second highest rate of photosynthesis (70 bubbles per minute)‚ and yellow giving the third highest rate of photosynthesis (64 bubbles per minute) and green with by far the least
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How light intensity effects the Rate of photo synthesis. Aim The aim of my experiment is to find out how light intensity affects the rate of photosynthesis. Prediction I predict that as the light intensity increases that the rate of photosynthesis will increase in proportion‚ so for example if you increase the light intensity from 10cm away to 20 cm away form a stationary plant. There for the rate of photosynthesis will decrease proportionally with the distance of the light from the plant (in
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fundamentally different microscopes now in use today: the light microscope and the electron microscope- both of which utilize different forms of radiation in order to create an image of the specimen being examined. The light microscope‚ so called because it employs visible light to detect small objects‚ is probably the most well-known and most commonly used research tool in the laboratory. Here‚ Specimens are illuminated with light which then passes through two sets of lenses known as
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In conclusion‚ one can determine how photosynthesis is impacted by light intensity through the experimentation on ivy leaf disks in a bicarbonate solution. The function of the sodium bicarbonate in this experiment was to provide a sufficient amount of carbon dioxide (CO2) for the photosynthesis process to occur. Without CO2 or any of the other necessary reactants‚ glucose nor oxygen cannot be produced. The leaves rise and sink due to photosynthesis occurring in the plant cells. As the carbon from
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. Physics Module Form 5 chapter 1 : Waves GCKL 2011 1.1 U N D E R S T A N D I N G W A V E S What is meant by a wavefront State the direction of propagation of waves in relation to wavefronts What is transverse wave? An imaginary line that joins all the points on the crest of a wave. The direction of propagation of a wave is perpendicular to its wavefront. A transverse wave is a wave in which particles of the medium oscillate in the direction of the propagation of the waves. Water
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article “Let There Be Light” tries to explain that we need our natural darkness by using evidence‚ reasoning‚ and persuasive elements. Evidence is the available body of facts or information indicating whether a belief or proposition is true or valid. In paragraph 3 it states‚ “ world health organization classifies working the night shift as a probable human carcinogen…. “. An human carcinogen is something that causes cancer. This statement is saying that artificial light at night can be a cause
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certain Slant of light” and “London” When make a comparison between Emily Dickinson’s “There’s a certain Slant of light” and William Blake’s “London”‚ differences and similarities can be found through thinking about the historical backgrounds of the two poems‚ the ways to express the theme‚ the rhetorical devices and punctuation used‚ and the religious points used in the poems. The similarities and differences between Blake’s “London” and Emily’s “there’s a certain Slant of light” can be easily
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White light and refraction: White light from the Sun is made up of all the various colours of visible light. Each of these colours has a different wavelength - red light (at one edge of the rainbow) has a wavelength of ~650 nm‚ whilst violet light (at the other edge) has a wavelength of ~400 nm. When light travels from one medium (say air) to another (water)‚ it changes speed‚ and if the light enters at an angle‚ it will bend. This is known as refraction. Shorter wavelength light (such as violet)
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