In plants the way they get there energy is through sun light where they have process called photosynthesis where they produce and release oxygen in the air. Photosynthesis requires direct sunlight, carbon-dioxide, and water. In this process of photosynthesis, plants decompose the molecules of hydrogen and carbon dioxide into hydrogen, then carbon and oxygen produces glucose which forms their source of energy, food and growth. Solar cells similar to this process get sunlight where light in the form of photons hits the solar cell and are absorbed by semiconducting materials such as silicon. Negative electrons are break free from their atoms, causing them with an electric potential difference.
According to Hopkins (2006), photosynthesis is the process by which green plants and certain organisms transform itself from light energy into chemical energy. As a straight forward chemical reaction in which carbon dioxide comes from the air, along with the midair and water from the soil, photosynthesis conglomerates to produce what is known as carbohydrate (p. 6). Solar Energy produced by photosynthesis, stores itself in a chemical bond of a carbohydrate molecule. Sugar known as glucose is then formed which becomes convenient both by way of energy to be stored for later use in tissues or by way of carbon to be used for cells (p.7). Hopkins, w. G. (2006).
Plants are the producers for an ecosystem. They photosynthesise carbon dioxide and water and produce energy in the form of carbohydrates and other molecules. Photosynthesis requires water, and plants gain water from the soil using mineral ions such as nitrate produced by the nitrifying bacteria. Hydrolysis of ATP releases energy for processes such as active transport of the nitrate ions (and others such as potassium etc) from the soil into root hair cells, a process that lowers water potential and is used to draw water into the plant from the soil. In leaves, photosynthesis involves the photolysis of water, a process that involves the attachment of two electrons to a magnesium ion in chlorophyll and the production of hydrogen ions from the breakdown of water.
The nuclear reaction of the sun travels outward and by the time it reaches the surface it is transformed into light energy (sunlight). When this energy reaches the Earth, it is in the form of heat and light. The heat from the sun is collected by one type of solar panel that is used to heat water for the home or to keep your house warm in the winter months. The light energy from the sun can be transformed into electrical energy to be stored or used immediately. The panel that converts light energy into electrical energy is called a Photovoltaic panel.
Answer = Experiment 2: Solar Energy Table 2: Solar Energy Experiment Results | Environmental Descriptor/Variable | Observations(Each should be compared against direct subnlight) | Weather of the Day | | Motor speed in direct sunlight | | Motor speed at 45 degree angle | | Motor speed under reflectors | | Motor speed with 25% shaded | | Motor speed with 50% shaded | | Motor speed with 75% shaded | | Motor speed under red filtration | | Motor speed under blue filtration | | Motor speed under green filtration | | Motor speed under yellow filtration | | Post-Lab Questions 1. Develop hypotheses predicting the efficiency of solar energy from direct sunlight against the 4 variables tested? Direct vs indirect hypothesis = Direct vs reflected hypothesis = Direct vs shaded hypothesis = Direct vs filtered hypothesis = 2. Based on the results of your experiment, would you reject or accept each hypothesis that you produced in question 1? Explain how you
The energy needed for photosynthesis comes from sunlight, which is the variable for this experiment. The substance that absorbs sunlight is chlorophyll, which is mainly contained in chloroplasts. This energy is used to convert carbon dioxide (CO2) and water into sugars. This conversion creates the
Photosynthesis is the process when plants and some bacteria use the sun lights energy to produce glucose from carbon dioxide and water. carbon dioxide + water- sunlight- glucose + oxygen Energy in the form of light is the definition of electromagnetic energy. Any visible light like light bulbs, electromagnetic energy can take the form of it. The energy is being absorbed to break bonds making the process endothermic. When energy is being released making new bonds formed is called the exothermic process.
It is only available during the day; if it is cloudy or overcast, there is no sunlight to be exposed, therefore a way to collect the sun energy to be used on those days have to be put in place. Question: In your opinion, from what sources does a sustainable society obtain its energy needs? Taking into consideration conventional and alternative sources, discuss each in its long term sustainability. In a sustainable society, the sources that energy is obtained from are renewable energy sources. The sun, the wind, geothermal, and water.
Form structural components in cells and tissues. Photosynthesis is a complex series of reactions carried out by algae, phytoplankton, and the leaves in plants, which utilize the energy from the sun. The simplified version of this chemical reaction is to utilize carbon dioxide molecules from the air and water molecules and the energy from the sun to produce a simple sugar such as glucose and oxygen molecules as a
These amazing organisms are capable of capturing the energy of sunlight and fixing it in the form of potential chemical energy in organic compounds.” (Measuring the rate of photosynthesis) “Light is one of the main factors that affects the rate of photosynthesis, which literally means using light to create something new.” (What Are Three Factors That Affect the Rate Which Photosynthesis Occurs?) This experiment was to compare how the Elodea photosynthesized when absorbing different colors of light, and to measure the absorbance from 500 nm of wavelength to 750 nm. Based on three types of pigments that are present in plants: chlorophyll, carotenoids, and phycobilins, it was predicted that both of the rates of photosynthesis and the absorbance of different wavelengths were high under the colors of violet-blue or orange-red, while rates were low under the light color of green-yellow. Materials and Procedures: The materials used for this experiment were as follows: Elodea leaves (that have been kept in the dark), spinach leaves, blender, cheesecloth, spectrophotometer, cuvettes, beakers, large test tube, 5% sodium bicarbonate, Kimwipes, razor blade, tape, 100 mL graduated cylinder, graduated pipettes with rubber tubings, light source, ring stands and clamps, cellpphane paper. In activity 2a, green test tube was clamped to a ring stand, and filled three quarters to the top with 5% sodium bicarbonate.