Investigation of the effect of light intensity Equipment: * Data loga * Light sensor * Bulb * Metre ruler X3 Variables: Independent variable – distance of the light sensor from the light source (m) Dependant variable – intensity of light (lux) Control | Why it needs to be controlled? | How will you control it? | Bulb | There are different watts in different bulbs | Use the same bulb‚ but if your one does break half way through the experiment you can use another bulb with the
Premium Light Sunlight Incandescent light bulb
fourteen jointed limbs. Woodlice form the suborderOniscidea within the order Isopoda‚ with over 3‚000 known species. The woodlouse has a shell-like exoskeleton‚ which it must progressively shed as it grows. The moult takes place in two stages; the back half is lost first‚ followed two or three days later by the front. This method of moulting is different from that of most arthropods‚ which shed their cuticle in a single process. Metabolic rate is temperature-dependent in woodlice. In contrast to mammals
Premium Woodlouse Arthropod Crustacean
Biology lab: measuring the effect of light intensity on plant growth Aim: Investigate the effect of light intensity on plant growth Hypothesis: Light intensity will have an effect on plant growth. With an increase in light intensity there will be plant growth at a faster rate in comparison to when the light intensity is low where plant growth is limited and will take place slowly. When there’s too much light intensity‚ the light intensity will no longer become a limiting factor. A limiting
Premium Carbon dioxide Light Oxygen
Light Intensity Characteristics of Photocells The photoelectric effect is defined as the emission of electrons from a material by visible light. The cadmium sulfide photocell is used to act as a conductor once exposed to light‚ allowing light to travel through. However it also acts as an electric resister (an opposition to a current flowing in a circuit) once not exposed to light. The photocell serves today ’s cause in a sufficient manner. It is used for a variety of reasons but it is mainly
Premium Light Electron Electromagnetic radiation
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 distance from the lamp
Premium Carbon dioxide Light Energy
nvestigation into the Factor of Light and Dark Affecting Woodlice Predictions It was expected that a woodlice would prefer a damp‚ dark‚ but moderately warm surrounding. Normally one would expect to find slaters under logs or concrete slabs in one’s garden. Under these large objects‚ the sun cannot reach directly; therefore it is darker‚ damper and colder than the surroundings. Nevertheless‚ in winter we do not see woodlice crawling around very often‚ and‚ also at night‚ it may
Premium Evaporation Preference Heat
out how light intensity can affect the rate of photosynthesis. Hypothesis I think that the further away the light source is the smaller the rate of photosynthesis is. This is because there is a further distance for the light to each the plant in order for it to photosynthesise. Although the closer the light source is‚ the more photosynthesis‚ the light source could also kill or damage the Elodea (type of pondweed) because it could become too hot and denature its cells. But because light intensity
Free Carbon dioxide Oxygen Photosynthesis
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
Free Photosynthesis Carbon dioxide Light
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
Premium Photosynthesis Light Plant
Woodlice - Porcellio Scaber Research: Introduction: [The following is summarised from: http://soilbugs.massey.ac.nz/isopoda.php] Common Names: Slaters‚ pill bugs‚ sow bugs‚ woodlice‚ Maori papapa Scientific Name: Arthropoda (Phylum) Crustacea (Class) Isopoda (Order) Oniscoidea (Suborder). Description: Slaters are apart of the Isopoda order‚ meaning they have an equal number of legs. They are also a crustacean‚ but unlike most crustaceans they are terrestrial opposed to marine dwellers
Premium Crustacean Woodlouse Arthropod