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Science Experiments

~19600 answered questions
Parent Category: Science
Experiments often conducted by students to test different scientific theories and hypotheses

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There are enough electrolytes in blood, saliva, urine, and many other bodily fluids that they can be used to make working batteries. However you need to take two dissimilar metals (e.g. copper, zinc) and immerse the two metals in such bodily fluids to make a battery. And such metals are not present …
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Its a safety thing. 20amps on that thin of wire will heat the wire up too much.Its a fact; not a story.   14 amp wire is not ok to put on a 20 amp rated device!!!! your wire will burn before the breaker will trip and will start a fire!!!!
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1.Run a larger main feed line. 2.Reduce amount of heads on sprinkler system. Good Luck
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it depends on the circumstances. it could be your line sizing or the builing pressure. either incease the size of the line or have a small booster pump installed to increase the pressure
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Swimming pool rust stain removal. Regular pool acid will work. Take a length of PVC pipe and point and touch the stain. You will probably need it 8 feet long depending on how far down the floor the stain is located. Carefully pour 2 cups of muriatic acid down the pipe and wait a minute for the acid …
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Safety Rules and ProceduresKnow what WHMIS is, and what the Safety Sheets are to look at the different chemicals that are used within the lab environment.Know how to use the fire extinguishers, and when it is appropriate to use them.Report all injuries and illnesses to lab staff immediately, DO NOT …
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When water is in a pressurized container, any air inside that water can't escape. Simply increase the amount of air, or decrease the size of the container.  Make sure that the water is completely turned on at the meter. Better yet call your city services and and let them check to see that it i…
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Some ideas for science fair projects are: Experiment: You can get 4 bottles and 4 balloons. Put yeast, sugar, and water in one bottle. In the second bottle, put yeast and sugar. In the third, put yeast and water. In the fourth, put just yeast. Then, put a balloon on the top of each bottle. This i…
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There are several types of bonds possible. There are hydrogen bonds, covalent bonds, ionic bonds, and metallic bonds. Atoms form compounds by sharing electrons to create full-levels which keeps them balanced and uniform. The first level is 2 electrons, the second is 8, the third is 18, and it keeps…
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No, salt water does not evaporate faster than tap water. The evaporation of water is slower when molecules are dissolved in the water. Sea water is very salty and so will evaporate more slowly than tap water or pure water. If you have a very small amount of salt dissolved in water, then it has a s…
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None. It will depend on the initial temperature of the soda, not the brand.
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The measurement of the force of gravity acting on an object is weight. The weight of an object (or the weight of an amount of matter) is the measure of the intensity of the force imposed on this object by local gravity. A measure of the force of gravity would be the product of mass and the accele…
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I had a similar issue and the two things I found that might help is number 1 check the screen in the shower head and the shower head diverting knob/lever/switch. And number 2 is that there may pin hole leaks to check for in the piping.  Diverter Valve or obstructionFor a pressure loss in both …
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A t bone steak will NOT dissolve in cola cola. the coca cola will separate into two different parts.
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equation for total acceleration (ta) between two objects: ta = (G*(m1+m2))/d^2 G= 6.67*10^-11 m1= mass , object 1 m2= mass , object 2 d = distance the acceleration is shared, in ratio proportional to masses, example: if mass 1 = 100 kg and mass 2 = 10 kg then total = 110 kg a(mass 1) = ta * …
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Ask anyone you know for ideas and sit down and think or you can look on the Internet and a great website is www.all-science-fair-projects.com/ Hope I'd helped you with your science fair project and have a fun time. :):): P.S. Have fun and Play Safe:):) <3
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Electromagnets are used in things that have moving parts, eg. CD players, heads on Hard drives, automatic doors in a grocery store, electric windows, motors etc., Some examples include: You can slide the bolts of locks and latches, tap out telegraphic dots and dashes, open and close switches in dis…
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Plants, in fact, do grow faster under certain colors of light. The reason for this is that chloroplasts can only absorb certain wavelengths of light because of the pigments they contain. There are 2 photosystems in plants called photosystem I and II. PS I absorbs light on the wavelength of 700nm whi…
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Ways making evaporation faster: 1.temperature is high 2.humidity is low 3.the exposed surface area of the wet part is large 4.air around it is moving(wind)
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Mendel studied sweet peas. He studied the inheriance of certain traits in pea plants. His studies of the passing of certain traits formed the basis for our understanding of dominant and recessive genes in plants and animals.
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They will. Apple juice in plants won't make the plants die fast, but soda will. Soda will make it turn yellow and die. Milk will make it grow a little but, not as much as water will. water is the most common thing they would put in plants.
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Static Electricity The discharge of electricity between your finger and the doorknob is in principle the same as the discharge from a cloud to a tree during a storm. It occurs because of the general diffusive principle in nature (entropy) -- that is, things try to balance out to equal distribution. …
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You should do it on fire, Water or the beach
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It always depends on the size and shape of the candle. The rate at which a candle burns is dependent on the size and composition of the wick, and the thickness, composition, and melting / vaporization rate of the candle wax. Color is not the predominant factor. Other observations * It's not the…
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Controlled experiment means you keep every other variable constant, except for one ( the one being tested). A variable means something that varies, or keep changing. Controlled experiment removes all the possibilities of external influences on the subject. Everything else must remain constant in a c…
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yes it does because darker colors attract and conduct more heat to evaporate.
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Properties of Plastic Some physical properties: transparency, flexibility, elasticity, permeability, water resistant, electrical resistance, Specific Gravity, soft when hot. Some chemical properties: solubility, chemical resistance, thermal stability, reactivity with water, flammability, heat of co…
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An experiment is something like if we don't know if, for example, the result of salt solution. Then we must do it for real to find out the answer. An experiment is not only in the science lab. We can do an experiment everywhere, such as: Our homes, the park,... So that's what a science experiment me…
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Sunlight helps plants grow through the process of photosynthesis. the leaves on the plants absorbs the nutrients and turn them into energy.
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it takes about 2 weeks to grow on food that's old
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Depends on frequency "Electromagnetic flux" is just the amount of energy passing through a surface in the form of electromagnetic waves. The answer to your question depends on the frequency of the electromagnetic waves. Long, slow waves like radio waves can pass through wood, and short, fast wave…
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by all the electrons flowing through it
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Some plants are better adapted to saline (or salty) soil than others.  Certain grasses thrive in very saline soils, whereas others simply perish.  Salt will kill plants that are not adapted to saline soils, because salt is hydrophilic it will leach more water out of the plants' cells than …
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Hot water doesn't freeze faster According to www.sciensational.com, hot water freezes faster than cold water.But I do not have any idea about your question. lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll
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It Needs Oxygen i know u are all gay. That's what makes the rust on metal. Combining it with oxygen.
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No, but certain types of soda, such as Coca Cola and Sprite, in fact, have a negative effect on plants! We all know that plants need water and carbon dioxide to live, but soft drinks cause infection to plants by weakening their immune systems, as well as kill the roots.
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If you get a measuring jug and fill it with fresh water up to the one litre line, you have a fixed volume of water - a litre - with a density of 1. Now add 100 grams of table salt to the water and stir it until it is all dissolved. You will notice that despite the addition of the salt, the volume…
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Go on ScienceBuddies.org , click on project ideas. Then, Click get ideas from the wizard and take the quiz .
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Because some chemicals in the alcohol has a freezing temperature lower than that of H2O.
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Adding salt to water raises the freezing (and melting) point of water (to below 0 °C or 32 °F). Salty water will freeze at a lower temperature than pure water, thus making it take longer to freeze than the same amount of pure water. See the Related Question to the left for more information about…
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The rate at which a candle burns is dependent on the size and composition of the wick, and the thickness, composition, and melting / vaporization rate of the candle wax. The composition of the candle is far more important to the burn rate than the color.
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Solutions are homogeneous mixtures with particle sizes at the molecule or ion level. The particles have dimensions between 0.1 to 2 nanometers. Typically solutions are transparent. Light can usually pass through the solution. If either the solute or solvent are able to absorb visible light then the …
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Answer I have used regular laundry bleach to whiten deer sculls. if you have acess to a beauty shop buy some 40% volume bleach gel.boil the skull/bones until all flesh is removed.now apply the gel to skull/bones with a light brush(like a tooth brush but larger) let sit for a few hours, keeping i…
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In my opinion, science is the truth although there are no definite answer to theories in science. Though, to have a theory out of science, one must have sufficient evidence to support the theory.
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====== My explaination will be Carbon,the non-metal element that contains of 6electrons,2.4 .....the positive charge 4 valenced electrons will share its electron with 2 oxygen atoms that consists of 4 valenced electrons too,in order to achieve stable octet electron arrangement,thus CO2 is formed
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Super-cooled liquids A gas takes the shape of its container and fills it, as well. A liquid takes the shape of its container but doesn't fill it necessarily. A solid has a definite volume and shape and usually, but not always, exhibits a crystalline structure. Solids that do not have a crystalline …
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The relationship between the velocity and pressure exerted by a moving liquid is described by the Bernoulli's principle: as the velocity of a fluid increases, the pressure exerted by that fluid decreases. Airplanes get a part of their lift by taking advantage of Bernoulli's principle. Race cars emp…
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Yes I believe that the color of water affects it's evaporation.
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It is measured in units called Newtons (N). 1 N = the force of Earth's gravity on a mass of about 102g.
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Water Milk is for mammal consumption. Other than adding calcium to the soil, it doesnt help the plant. Plants naturally seek water in the soil. It could possibly survive in the milk but would like the water better.
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1)Ask a question2)Make a hypothesis (predict what will happen with your experiment)3)Research your hypothesis4)Test your hypothesis5)Collect/organized your data6)Results7)Draw a conclusion
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Chalk is primarily calcium carbonate (CaCO3) or magnesium carbonate (MgCO3).
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yes it does certain colors let in more light energy for the plant
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Read the formula on the link below. http://en.wikipedia.org/wiki/Dynamic_pressure
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The main ferromagnetic metals are iron, nickel, and cobalt. The uncommon element gadolinium is magnetic. These form alloys that are also magnetic, such as steel. The rare-earth elements neodymium and samarium can also form magnetic alloys, and neodymium magnets are among the most powerful of permane…
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My parents went through this when they moved into there house. It is an older house. They ended having a plummer replace some and clean out the pipes. There was alot of calcium and mineral build up inside the lines. If it is just this outside faucet maybe you could just replace this pipe with new on…
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99 cents store Wikipedia says this is an astringent, styptic (stops bleeding), antiseptic, natural deodorant, and an ingredient in traditional Chinese medicine. So...try a Chinese grocery store or a health food store.You can buy Alum in any grocery store in the spice section. It usually comes in th…
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the salt will slow down the freezing point of water because of colligative properties.
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To get enough thrust to have lot of wind move under the wings to have the wind lift it up...if you went backwards then the balance of the plane would make it impossible to pilot.
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Most of the time, what we call taste is intrinsicially tied to smell. Traditionally taste has only 4 measurable concepts: salty, sweet, sour, bitter. Some cultures regard savoriness and piquance as major taste experiences, and taste buds can also detect fatty acids as a distinct flavor. Taste also …
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If you want to help save rainforest then don't eat fast food / buy cheap foreign beef. The rainforest is being destroyed in South America to make way for grazing to produce cheap beef. Check the products you buy to see if they contain palm oil (the forests are being cut down in places like Borneo t…
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Wood is made of atoms. These atoms make up molecules of cellulose, bound together with molecules of lignin. Joyce in your face
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1.Will bananas mold faster in light, little light or no light?2. Which brand of soap will have the most suds?3. Which cereal has the most raisins?4. Which brand of bread will mold the fastest?5. A good science fair question is how acids and non acids react6. Vertical farming was really fun and reall…
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For a science fair project you can do estimating solar energy potential of a house using solar lights
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Gregor Mendel chose the pea plants for his experiments because the garden pea is an ideal subject in the study of genetics for the following reasons: -- presence of observable traits with contrasting forms -- produces many offspring in one cross -- short life cycle -- ease in manipulating pollin…
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Air doesn't effect the bounce of the ball much higher air pressure the harder the ball lower pressure softer the ball temp effects it too colder soft warmer harder
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Answer nuclear fusion
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I'm sorry but... NO ONE KNOWS😝
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Micheal Faraday discovered the relationship between magnetic fields and electricity traveling in a wire. This led to the brilliant work of Tesla. He is the father of modern electricity. He invented the shaded pole electric motor. Still the heart of most systems today at the house or factory. Others …
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Light and Heat.
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If available, a small, glass graduated cylinder would be best. Next best would be a test tube or any clear or semi-transparent cylinder/ small plastic recycled container/bottle. If an eyedropper is not available, recycle a milkshake straw to move/transfer small quantities of a liquid. Place the bot…
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its positon to the sun.
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Things that are less dense that water float while things that are more dense sink. An object's density has to be less than what it's floating in. If it's less, the object floats. If it's more, the object sinks. For more information about buoyancy see the related questions below. There is an excep…
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Possibly. You'll have better luck if you FOCUS! A few other tips: Plan when you'll work on each project by making a schedule. Take breaks. Do each project in priority order. Eliminate unnecessary steps.Don't spend all day on one project. Switch to another if you're having trouble with the one you're…
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1 or 2 or 3 years at the max
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Physical properties are those that can be observed without changing the identity of the substance. The general properties of matter such as color, density, and hardness, are examples of these. Chemical properties are properties that determine how a substance changes into a completely different subst…
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Demo: Use bagged candies to demonstrate how increasing the number of partners can increase the risk of getting an STD.Research: The changing demographics of syphilis, and/or the multi-stage nature of untreated syphilis. (If you do the latter, consider looking up the Tuskegee Experiment.)Research: Ch…
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sciencefair.com Salt water freezes at a lower temperature. Therefore pure water would freeze faster.
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The similarity of the two is that if.... example: if you shined a flashlight at a 30 degree angle on a mirror it will reflect and show as a 30 degree angle on the other side.They are equal.
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in clutch discs
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Anything you're interested in! Seriously, you're not going to put in the time needed to do an experiment if you're bored just with the topic. Pick something you would really like to find out, like which gum flavor lasts longer or whether hair grows faster if you brush it 100 times a night or what ha…
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when the sun comes up in the morning and you are facing it your shadow will be behind you and be very long (shadows are made by something blocking the light from the sun). here is an analogy: if you have ever been in a plane you will see only people heads so the sun does too and the less of you they…
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Depends: More electrons than protons - negative. More protons than electrons - positive. Equal number of electrons and protons - neutral (no charge). Gaining or losing an electron is called an isotope
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prophase I metaphase I anaphase I telophase I and cytokinesis prophase II metaphase II anaphase II telophase II and cytokinesisThere are 4 phases in meiosis phase 1. They are the prophase, the metaphase, the anaphase and the telophase.
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Hurricanes form as a result of a large heat imbalance between Earth and it's atmosphere. During the Spring and Summer the Sun heats the upper portion of the ocean and a lot of heat energy builds up. The atmosphere tries to remove this large amount of heat energy through condensation. A hurricane is …
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ACTUALLY YOU CAN!....using a simple word replacement with known values. 1 cc=1mL=16.23 minims (16.23)(1/60)drams (16.23)(1/60)(60)grains (16.23)(1/60)(60)(64.8)milligrams therefore 1cc = 1051.7mg The answer above is erroneous. The milligram is a unit of mass and the cubic centimeter (or millilit…
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God created stars. Bless
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I am only an eighth grader, but read my answer. So, when the visible light passes through the prim and refracts on it's edges, the beam of light splits into a spectrum and it looks like a rainbow, only because white light is acctually all of the colors of light put together. Hope i helped :) A "…
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salt can lower the freezing point of the ice cube and sugar cant do nothing at all
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The following is the most correct answer- -Heisenberg's Uncertainty principles arises as one cannot find simultaneous eigenstates of conjugate operators (i.e. p and x or Lx and Ly) for atomic and subatomic objects. Because one cannot find such simultaneous eigenstates, the particle in question can n…
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Absolute versus relative densityDensity is mass per unit volume. To determine an object's density (absolute), simply divide its mass by its volume. For example, 1000 kilograms of water occupies one cubic meter. We can therefore say that water's density is 1000 kilograms per cubic meter (kg/m3), whic…
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Soda has carbon dioxide gas dissolved in it. In the closed bottle, the soda is under pressure, and so the gas cannot escape. When you open the bottle, you release the pressure and the gas begins to escape -- you can see the bubbles rising. That is what makes the pop-fizz sound. If you leave the bott…
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