Make a Potato Battery Hypothesis.
If we can make a potato into a battery, what else do you think could be made into a battery?
Osmosis Experiment For Kids: Potato, Water, and Salt
Friction: another investigation might be to find the minimum value of the initial speed of an object that is needed to traverse the entire loop. We easily find that the kinetic energy at the bottom of the loop must be equal to the potential energy of the object at its initial position on the inclined plane. The problem becomes more difficult if we consider the existence of sliding friction between the object and the circular track. While you may know that the frictional force Ff = μFn, where Fn is the normal force that the object exerts on the track, but you will soon realise that this normal force varies with the angular position in the loop and that involves the cosine of the angle. All of a sudden is is a difficult problem and would require a bit of calculus to solve it. While it is challenging to analyze not only how the frictional effects influence motion on the circular loop and the conditions for the object to go around it, you wouldn't have to be able to model it mathematically at a Year 11 level. What you would do is collect and analyse the speed and angle data, and try to explain the relationship. Difficult but not impossible. There's a good article in the American Journal of Physics, 79 (9), September 2011, p 913.
A great , and fun for all ages, our Electric Lemon science experiment is a crowd pleaser that the most inquisitive of minds will enjoy. So try it out, and discover the power of lemons!
Potato light bulb experiment for kids - Know About Life
If you are keen to see what they are all about have a look at . What you must ask is "could it make a good EEI?" The problem is, if you are doing a "manipulated variable" EEI then you have to decide what variable you are going to change (the independent variable) and what you are going to measure (the dependent variable). Then you have to propose a hypothesis linking the two conceptually (and maybe mathematically) and then provide a justification for your hypothesis using physics concepts, fact and principles. No easy task for a Year 12 student. The chances of a good mark maybe very slim so think carefully before you press ahead. In fact, when you do your risk assessment you will probably find the hazards of electric shock, fire, UV radiation and X-Rays are too great.
Hydrogen is likely to be the most important future energy source with the potential to make significant reductions in greenhouse gas emissions. Safe use of hydrogen by the public requires that the safety issues have to be investigated. Its behaviour in accident scenarios has to be predicted, allowing safety measures to be developed where necessary. A key factor in this process is predicting the release, dispersion and combustion of hydrogen in appropriate scenarios. Investigating the events of a hydrogen 'pop' in a tube can be most instructive.
Hypothesis for potato battery experiment
The sound is produced by the interaction of two radio frequency oscillators which normally are operating above the range of human hearing. However, if one of these oscillators is slightly detuned by varying it's frequency (by placing objects near it to change the capacitance) while the other oscillator remains fixed, the difference in the frequencies (known as the beat frequency) is in the audible range and can be amplified. This process is known as heterodyning. It is a weird sort of electronic musical instrument that you play by moving your hands in the magnetic field that it puts out. Its definitely a strange sort of gizmo and would be a pretty good thing to keep once you have finished your EEI. You can make all sorts of sci-fi effects like in the old flying saucer movies and the sounds from The Beachboys song . Click here to listen to some . WARNING: the important part of your EEI won't be in building it but in using it to test your hypotheses.
Wind energy is plentiful, renewable, widely distributed, clean, and reduces greenhouse gas emissions when it displaces fossil-fuel-derived electricity. It is considered to be more environmentally friendly than many other energy sources and worthy of our investigations. Most wind turbines seem to be 3-bladed whereas domestic fans seem to be 3, 4, or 5 bladed. As well, wind turbines can have adjustable blade angles. You could make some model turbines hooked up to a small electric motor and measure the voltage produced when you blow air on it. How does blade angle, blade length, number of blades etc affect performance?
What is the control in potato electricity experiment?
Can potato be used to generate electricity
Make electricity from Potato
Potato Battery | Kids Science Fair Project Ideas
Next Phenom. Potato Battery Sent in by: Alexis of Temecula, CA Surging spuds! Make a potato power plant.
How To Make A Potato Battery Tail Light Bulb
How to Conduct a Science Experiment - wikiHow
A successful EEI can be built around investigating the passive shielding effect of different thicknesses of different materials, perhaps using a Hall Effect device as a sensor. However, it is no good just testing a few materials and saying which is the best; you need to hypothesise which would be best and justify your choice by reference to physics facts and principles. If you are not using a Hall Effect IC (or a Gauss Meter - shown above) to measure the field, you will have to design a method that makes sense - eg picking up unmagnetised paperclips. This may seem easy but will require a lot of thought. A fabulous EEI if it comes off. And so useful. One thing I'd like to know is why a steel gauze Bunsen Burner mat is just as good as a sheet of steel for shielding. Wouldn't the magnetic field get through the holes in the gauze?
Science Fair Project Ideas, Answers, & Tools
Accurate data on household energy use, combined with other data on household well-being, is essential to monitor progress in the household energy transition from traditional biomass fuels to modern fuels and electricity and to evaluate the effect of government energy policies on living conditions. Multi-topic socioeconomic household surveys à la LSMS can provide data with which to make these measurements. Designers of LSMS and other multitopic household surveys can use these guidelines to help ensure that their surveys provide extensive and reliable data on household energy use.
Lessons and Ideas to help with a unit on electricity and magnets>
The discovery that the motion of a magnet past a coil of wire produces an electric current was made by Michael Faraday 160 years ago. Since then this relationship has been investigated by countless scientists, engineers and students. You would think that there is nothing left to discover but some interesting things are always thrown up by investigators. Electromagnetic induction makes a good EEI, partly because it can be done simply and partly because interesting data gives you lots to talk about. Physics teacher at Urangan State High School, Queensland, Australia, Alan Whyborn describes an experiment that could be the basis of an EEI.
4th Grade Science Fair Project. Free. Easy.
When you fire an arrow from a bow you will see that different angles of elevation give different ranges. In a vacuum it can be seen that the maximum range occurs for an elevation of 45º. However, in air, the range and elevation are not related so simply (see the two graphs below). This suggests several good EEIs. You could merely find out which elevation gives the best range when "draw" is kept constant, but you could also propose an hypothesis along the lines of "45° gives the greatest range" and that angles above or below this give a shorter range. Further, complementary angles are said to give the same range - but this could be tested (see diagram below). Lastly - is "range" the only dependent variable you want to look at. Perhaps an archer is more interested in "time of flight" as this may give better accuracy (less time for air resistance to apply). I have attached two pages from my text that may be helpful in designing this experiment. to download them. For safety information about archery, see the comments in the EEI suggestion above.
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