There may be a variation in the results if the project is performed outdoor due to the wind and weather condition. It deals with the efficiency of the solar heating working model. This is one of the simplest science experiments that you can do and prepare for your science fair. Science Models for Class 8 – Idea #3: Solar Energy Project It acts as a magnetic flux since it is wrapped with coil and boosts the efficiency of increase in voltage. The nail used in the experiment helps concentrate the magnetic field. The systematic movement should be done so that the coil is continuously near the magnetic field. Therefore the magnet or the coil has to be in motion constantly. To induce electricity the magnetic fields should be in continuous motion. The strength of the coil also contributes to the magnetic field strength. The number of wire turns along with the size of the coil is what contributes to the increase in voltage. The concept behind this is that the generator model operates by a magnetic field. The bulb or LED will start lighting up you will see. Now, bring the magnet close to the head of the nail and while holding it near move the magnet from side to side. Take a free end of the wire and attach it to a bulb or an LED. Take the insulated part of the nail and wind the coil of magnet wire between the two circles. Thereafter, add more tape on the other sides of the circle. You need to cover the quarter part of the nail with a single layer of tape. Then find a large nail and thread one of the circles to the nail. Via this experiment a moving magnetic field is fixed at the center of a coil and electricity is produced enough to light up a tiny bulb.įirst, make a hole in the middle of wooden pieces. Science Models for Class 8 – Idea #2: Electric Generator The challenge is, however, to produce electricity in a larger amount for a longer time. You have now created electricity by using a potato battery. The result may vary during the experiment, it is recommended to measure for at least five times and get the average result. On an average, a digital multimeter shows 1.2 volts of electricity between the electrodes. ObservationĪ digital multimeter can be used to measure the voltage of the current flow from the potatoes. The current will pass through the wires and activate the digital clock. Then use alligator clips to connect electrodes to the digital clock so that the voltage can be measured. Image Credits: Science Buddies Raw Materialįirst insert the zinc and copper electrodes into the potatoes, close to each other but not touching. Let us see how to generate electricity using a potato. You could use potato as an electrolyte, a fresh potato has a lot of juice which serves the purpose. The proven method for this process is using Copper and Zinc electrodes and Sulfuric acid as an electrolyte. The chemical reaction between two different electrodes and one electrolyte help generate electricity in a battery. Science Models for Class 8 – Idea #1: Potato Battery Here are some simple and easy to follow science models for class 8 with a step by step description of how to do them. One has to have innovative ideas and brainstorm with their team to make the best possible utilization of the resources that they have.Įven in class, many times there are projects to be submitted and one needs to come up with ways of utilizing the given theories and concepts. You need to think out of the box to be able to compete and be recognized. Every school has a science exhibition or science fair that they organize on a regular basis. There are educational stores that sell many products which provide kits and even raw material for numerous working models, project and material for the students to experiment and come up with their own models.īy the time a student comes to middle school, they start taking part in quite a few school activities. There are various websites and material available on the internet that allows a student to explore the subject from various angles and aspects. Technology and digitization have made it very convenient for a student to learn and grow. Science Models for Class 8 – How to go about it? Let us now study the top ideas for science models for Class 8. Unfortunately, students, these days are taught only to remember but not really learn and understand the concept behind what they study. Practical teaching is the best way to understand concepts. Science is always better taught in terms of creativity and science models for class 8 do just that. High School is a time where people grasp absorb materials better since the mind is young, fresh and not stressed. There is no end to learning and learning possesses no age bar.
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