# Essays Tagged: "light intensity"

#### The effect of light intensity on the rate of photosynthesis

... time. There are many factors, which affect the rate of photosynthesis, including light intensity, temperature and carbon dioxide concentration." Taken from www. Essaybank.co.uk... 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... 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...

#### How light intensity effects the rate of photosynthesis.

... of time. Investigate the factors of - Independent variable - I am changing the light intensity.                   - Dependent variable - I am measuring the rate of photosynthesis. - Controlled variable... so I've drawn it instead. Table Distance from Lamp in CM         Light intensity         Temperature oC         Distance, travel -length in double         Rate distance         Amount of... the table for the preliminary experiment this table shows the amount of light intensity, temperature, distance, travel length in double, rate distance and amount of...

#### How does light intensity affect the rate of photosynthesis?

... affect the rate of photosynthesis? Poorly Pondweed Questions 1) How does light intensity affect the rate of photosynthesis? 2) How does temperature affect the rate... will do the lower temperatures first in the temperature investigation. For the light intensity investigation... Set up the apparatus as shown in the diagram on... 25 for 10cm away. As the lamp was moved further away, the light intensity increased, therefore the rate of photosynthesis increased. The pondweed had more...

#### How light intensity affects the rate of photosynthesis. (Measured by the amount of bubbles produced in 2 minuets)

... this was fast accurate and effective.          OBTAINING EVIDENCE Results Table Distance (cm)          Light Intensity (units)         No of bubbles in 2 minuets Test 1         No of..., temperature and carbon dioxide concentration.. My Prediction I predict that as the light intensity decreases the rate of photosynthesis will also decrease. I think this..., even if there is plenty of water and carbon dioxide. Increasing the light intensity will make photosynthesis faster. - Sometimes photosynthesis is limited by the level...

#### Investigation on how light intensity affects the rate of Photosynthesis.

..., so will the rate of photosynthesis. Furthermore, I hypothesise that if the light intensity increases, the rate of photosynthesis will increase at a proportional rate... my prediction is correct. The results indeed show that the amount of light intensity and oxygen go up in a directly proportional rate. I can... the reaction cannot be carried out and no glucose can be made. Light intensity is one of the factors that affect the rate of photosynthesis...

#### An Investigation To Discover Whether Or Not There Is A Relationship Between Light Intensity And The Surface Area Of A Leaf.

..., as to make the rate of photosynthesis efficient with only a low light intensity, there would have to be a large number of chloroplasts containing... 0.26, this shows that there is no significant relationship between the light intensity and the area of the leaf, from my results. My results... could affect the surface area in the following way: ·A higher light intensity could make the surface area of the leaf larger. The reason I...

#### The effects of Light Quality on the Rate of Photosynthesis Measure through Floating Spinach Disks

... meter and found five spots under the flood lamps in which the light intensity was 2000 lux with their respective filters. The variable treatments we... the bottom. Another error that could have occurred experimentally is that the light intensity at each Petri dish wasn't exactly 2000 lux. It was... are available to the chlorophyll. At the spots where the light intensity was 2000 lux with their respective filters, we placed a Petri dish under...

#### Slater Investigation on Responce to Light Stimuli

... adaptations to help minimize and avoid desiccation. * value="1" Slaters prefer lower light intensities, this helps them keep hidden from predators and cool; not exposed... shelter. Living under rocks and bushes provide good conditions for slaters, low light intensity, cooler temperatures and high humidity. I am going to investigate the... will alter the results of the experiment. Method for doing the Light intensity experiment: Equipment needed: Choice chambers already made up Lux meter Stopwatch or...

#### Biology Investigation How Light Affects Photosynthesis

... investigation I can carryout the following extensions.         Primarily I can use different light intensities by using bulbs of different watts. This would directly look at..., blue and see their effects on photosysnthesis -         use different plants -         increase the light intensity place some plants in the open, i.e field, and others... that I only get results that have been affected most by changing light intensity. Results Tables         Number of oxygen bubbles produced Distance from lamp in...

#### Lighting Units - Motion Picture Lighting

... overhead. Yet this is a good solution because one can handle the light intensity by changing materials or moving the screen during the course of... interior environment. A foot-candle is an important measure of the intensity of light and is based ont eh output of a single candle. If... intensity by changing materials or moving the screen during the course of the day. 4 MANIPULATING SUNLIGHT The angle of the sun is a powerful...

#### Light wavelength effect on the photosynthetic rate of elodea.

... a 100 watt lamp above each plant so I get a high light intensity to speed up the rate of photosynthesis. Aim: The purpose of... instead of the ones in this experiment like black lights and UV lights and light intensities of a wider range or an experiment to test... this experiment, photosynthetic rate varies greatly depending on the different colours of light used. This is because different colours are determined by different wavelengths, and...

#### How light intensity effects vitamin C?

.... Though the colors of the two solutions are about the same, the intensity of the indophenol is much brighter than that of the cornstarch-iodine... the sun. Hypothesis Vitamin C and be easily broken down by UV-light and form free radicals. These free radicals can damage the body internally... drink mite have lost some thing as it was out in the light. I later found out that it was the Vitamin C that had...

#### Photosynthesis lab report

... Photosynthesis, 2003). The reaction rate of photosynthesis varies with light intensity, and as the light intensity increases the reaction rate also increases only up to... Methods This lab consisted of two main experiments, one with the intensity of light and the other with wavelengths of photosynthesis. The spectrophotometer was turned... and the absorbencies were obtained. For the absorbance readings at different intensities of light, most of the process was the same, except for the cuvettes...

#### Artificial Inteligence

... that of         biological systems' (qtd in Thompon 251).         The retina was first tested by changing the light intensity of just one single pixel while the... of just one single pixel while the         intensity of the surrounding cells was kept at a constant level. The design of the neural network         caused... and cone cells in the eye.         Their job is to accept incoming light and transform it into electrical signals. In the second         layer, horizontal cells...

#### Ecology - An Introduction to Ecology and the Biosphere

... of the Earth on its axis causes seasonal variation in temperature and light intensity as the planet revolves around the sun. XIV.         Local and Seasonal... of Aquatic Biomes A.         Light is absorbed by both the water itself and the microorganisms in it, so that its intensity decreases rapidly with depth... it, so that its intensity decreases rapidly with depth. B.         Ecologists distinguish between the upper photic zone, where there is sufficient light for photosynthesis, and...

#### Photosynthesis.

..., so would the rate of photosynthesis. Furthermore, I hypothesised that if the light intensity increases, the rate of photosynthesis will increase at a proportional rate... the points. This meant that the rate of photosynthesis increased as the light intensity increased. This was because photosynthesis is a reaction, which needs energy... a product of photosynthesis. My graphs showed that the relationship between the light intensity and the rate of photosynthesis was non-linear, as both graphs...

#### Photosynthesis Coursework

..., so would the rate of photosynthesis. I also think that if the light intensity increases, the rate of photosynthesis will increase at such a rate... go down. Eventually, a level will be reached where an increase in light intensity will have no further effect on the rate of photosynthesis, as... Analysis: I can see from my table of results that as the light intensity increases so des the rate of Photosynthesis. I can also see...

#### Acid Rain Experiment.

... area of the laboratory where they will be exposed to the same light intensity and temperature. 12. Check the seedlings one week after and record... intensity and temperature. 12. Check the seedlings one week after and record observations (condition, colour), heights of stem and pH once more. ResultspH:StrongWeakControlBeforeAfter6.5Height... of the stem of the cress seedlingsControlled variable (to keep constant)  The light, oxygen and temperature that the seedlings will be exposed to, the length...

#### The Effect Of Different Distance Intensities Of Light On Terrestrial Isopods:

... information gathered pertaining to the time trial averages for each distance intensity of light, there is evidence that the terrestrial isopods (rolypolies) prefer a certain... at 3-30, 60, 90 second intervals for         each varying distance intensity of light distance. After the trials, the data         collected from the movements of..., 90 second interval divided by 3 trials) for each varying distance intensity of light and the control will be used and graphed to present a...

#### Photosynthesis

... factors become limiting. These may include CO2 levels or temperature. Extremely high light intensities might even damage the chlorophyll molecule leading to a decrease in... is reached, and the rate of production will decrease. An increase in light intensity will have no effect because there is another limiting factor, probably... oxygen produced by a plant is affected by different factors such as light intensity, temperature, amount of water and amount of CO2. However in our...