Synthetic detergents cause water pollution in concentration as low as 1 ppm. Such water cannot be used even for bathing, swimming and irrigation purposes. Read product reviews online or refer to magazines. Safety Avoid harmful accidents by using safe practices. Every author feels the same way. Sewage generally includes biodegradable pollutants such as human faecal matter animal wastes and certain dissolved organic compounds e. Industrial Pollution: Most of the Indian rivers and fresh-water streams are seriously polluted by industrial wastes or effluents Table 15.
When you work hard to write something, you don't want your friends to loaf and just copy it. From the instruction page of each science project kit you will have a direct link to the klk. For your science experiment, you may want to figure out which kind of nut will release the most energy when burned — a basic peanut? Science fair projects are a valuable experience. This is measure of oxygen equivalent of the requirement for oxidation of total organic matter, i. Cadmium Cd is also responsible for causing cancer of liver and lungs. Then replace that piece of tape and remove the other one.
Excess of fluoride also causes a famous disease of bones, known as skeletal fluorosis in which bones become hardened and stiff, and joints painful. Safety Tip: The oil will get very hot and can splatter. They impart odour, colour and unpleasant taste to the water and thus cause inconvenience in water supply, fish farming and make the use of water ineffective. Groundwater Pollution: At many places in India, even the groundwater is contaminated due to seepage from industrial and municipal wastes and effluents. Step A — Clarify Variable Clarify the variables involved in the investigation by developing a table such as the one below. Mining and processing of ores to produce useable radioactive substances. More than a random guess, a hypothesis is a testable statement based on background knowledge, research, or scientific reason.
Pressure from water vapor inside the corn kernels causes it to pop As you probably saw in your experiment, the moisture has to be just right for the popcorn to pop. Now with over 1000 members and growing, the Mad Scientist and his team of Mentors have helped thousands of students from all over the world with their science project problems! For example, after investigating the effectiveness of different stain removers, a student might conclude that vinegar is just as effective at removing stains as are some commercial stain removers. For humans however, starch is a tasty carbohydrate. After careful testing and data analysis students will report their results in an organized format that will be easy for others to understand. For any other use, please contact Science Buddies.
This post is part of the series: Winning Science Fair Projects. The colors you choose for your science fair display should be closely tied to your topic, but also chosen carefully based on these subconscious associations. Gravity pulls water down toward the earth, and the weight of the water exerts torque a rotational force on the water wheel. Higher the temperature of water, lower is the rate of dissolution of oxygen in water. You can also try taking the average of more popcorn kernels after popping. Extra: Water has potential energy due to its position above the ground.
If the page doesn't load quickly click on Impatient? Surface Water Pollution : Major lakes, rivers, reservoirs of the world are now getting polluted by various ways Table 11. Should illustrate an observation from the experiment. A hypothesis shows the relationship among variables in the investigation and often but not always uses the words if and then. This weed has tremendous capacity to accumulate heavy metals and even radioactive elements. As a result, the student might recommend that people use vinegar as a stain remover since it may be the more eco-friendly product. Using the same concepts from your experiment, water wheels capture the force of powerful rivers, converting it into electricity and sending it into the electrical grid. It contains much phosphorus which stimulates algal growth and thus hastens eutrophication.
Another useful web-site on this topic is Article in a scholarly journal Author last name, Author First Initial. Images are just as important as providing all the details of your project in written form, and the right balance between text and images makes your display visually appealing. How It Works Popcorn kernels are actually the seeds of corn plants. Hydropower is still used as a source of electricity in the United States. You notice it looks kind of dried out.
Place the reference citation at the end of the sentence but before the final period. The short answer is that the research paper is a report summarizing the answers to the research questions you generated in your. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. Repeat steps 3 and 4 for the other types of popcorn: low moisture and high moisture. Radioactive materials used in nuclear power plants.
Guide each end through a loop on your paper clip support. Problem How can hydropower be used to lift an object? We also encourage you to read through our series on. This might get you to thinking that more moisture is better. Tie the loose end of the thread to a weight or other small household object. You are in the right place. If the moisture is too low, there won't be enough steam to burst open the pericarp, which is why old, dried out kernels don't make nice fluffy popcorn.