Comparing the Growth of Pea Plants Grown in the Light and in the Dark Aim: To compare the vertical growth and weight gain of pea plants grown in the light and in the dark. Background Knowledge: Photosynthesis forms the basis for this experiment. This is the process by which a plant makes food for itself from the raw materials around it. 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.
HYPOTHESIS My hypothesis is that the stem of each plant will be attracted to the magnet. I think that the magnet will pull the plant's root causing it to grow away from the magnet. I base my hypothesis on my research that states that plants have different kinds of tropisms that attract to different things and cause the plant’s roots to grow downward. I also based it on the fact that magnets attract to some things and repel to other things. EXPERIMENT DESIGN The constants in this study are: How much water the plant receives How much soil is in the pot How much light the plant receives What the growing temperature is When the seed is planted How many seeds are planted in each pot Where each seed is planted How deep each seed is planted How big the pot is How far from the light the pot is The temperature of the water What time the light is turned off and on The manipulated variable is whether a magnet is being used and where the magnet is placed.
Plant Growth Investigation The scientific method is a way to ask and answer scientific questions by making observations and doing experiments. The question I was attempting to answer was; what are the effects of different types of water on the growth of grass? My hypothesis was if we water the grass seeds with bottled, tap, and salt water, then the seeds getting the bottled water will grow the best and be the tallest at the end of the experiment because the bottled water doesn’t have the toxins that the salt and tap water will have. We needed a lot of materials to conduct our experiment they were; • 6 Seven ounce cups • Soil • Seeds (20 per cup) • The 3 types of water (Salt, Bottled, Tap) • Graduated Cylinder • Ruler • Pencils • Sharpie • Our chart/packet Our procedure was to first gather all of the materials we needed. We first labeled each cup with what type of water we were going to use.
Composting Lab Composting is a natural method of recycling and is essential to maintain healthy soil and a healthy ecosystem. Composting is an economical way of generating abundant natural land. There are numerous varieties of compost containers available to facilitate the growth of greens and gardens. A compost pile is regularly made from fruit and vegetable trash, newspaper and grass pieces, and leaves. Hypothesis: Corresponding to the theory of composting, it is more than possible that a cup filled with organic matter, leaves, water, and soil will be decomposed from at the end of a fourteen-day period, producing and organic mixture rich in nutrients, that will help the nourishment of my garden, and small orchard in my mom's backyard.
Water Watering plants correctly is vital for developing and maintaining a landscape planting. Lack of water can cause a plant to wilt and ultimately dry up and die. Excessive water can cause roots to die and rot, in which case the plant wilts because it is oxygen starved, and consequently is unable to take up moisture.
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.
Rainforest in reality have shallow and relatively infertile soil. The reasons behind this soil having these qualities is because heavy rainfall causes important nutrients needed for a fertile environment to be washes away and/or dissolved into the lower layer of the soil (leaching) thus leaving the forest floor infertile. Once leaching has occurred and removed these nutrients, trees become unable to access fertile soil and remain healthy. Many rainforest trees have developed adaptations which allow them to reach down into the lower levels of soil and receive these nutrients. Such adaptation is known as a “Buttress Roots”.
Medicine Anaesthetics Medicine Anaesthetics Sustainable wood Sustainable wood Chocolate Coffee (coco) Chocolate Coffee (coco) Tribes are a living encyclopaedia of knowledge Tribes are a living encyclopaedia of knowledge Drives global climate Drives global climate Why is the Rainforest so important? Why is the Rainforest so important? Foods fruits Foods fruits H20 water H20 water climate Rain forests usually have high humidity and daily rainfall. The vast areas of trees have been called the "lungs of the earth." The forests “breathe” by removing large amounts of carbon dioxide from the air and giving off oxygen.
The roots hold soil in place and the tree’s leaves becomes organic material in the soil- food for plants. This cycle creates dependence: the trees cannot grow without soil and soil needs the tree to be fertile. On Easter Island much of the soil washed away without tree roots to anchor it. Because moisture goes back into the air from the leaves by transpiration, there was a lack of humidity and rainfall. The groundwater was not replenished and the land dried out.
The Action Spectrum and the Absorption Spectrum Introduction: The purpose of this experiment is to learn the rates of photosynthesis under different lights, and the absorbance of photosynthetic pigments in spinach extract. “There would be no biology without photosynthesis. Plant biomass is the food and fuel for all animals. Plants are the primary producers. 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?)