Science exhibition report of class 8
Answers
Introduction to science working models for class 8
Science exhibition is an integral part of the students’ syllabus in their Standard 8. A good science project for their science exhibition is every student’s wish. If you are you want to design a simple science working models for your school projects and score awesome score and a round of applause, you are at the right place. Here we have the best school science working models for class 8 for your science project along with details of what you need and its detailed procedure.
Few of the projects mentioned below are tested and extremely popular in schools. The materials used in these models are also easily available in your house and few you can buy from outside at a very low cost. Science fair projects for kids, middle school students and upper school students are included in these simple and useful science working models for class 8.
Solar Energy Project
Owing to the shape, a concave mirror collects the solar radiation and concentrates in one small particular point. This project is all about the same. Apart from this, it also explains how the color absorbs the sunlight and as an effect sufficient amount of heat is generated to burn an object. This project needs to be conducted outdoors on a sunny day or indoor if the sunlight enters the room through the window.
Below are the prerequisites for conducting the project
A wooden standThermometerTube to flow liquidConcave or converging mirrorBlack paper
Now let us see how it is to be conducted:
Firstly the wooden stand needs to be mounted. Pieces of black paper to be rolled around the tube. The tube to be attached in the concave mirror in a way that the sunlight concentrates in one direction. This tube to be filled with tap water After 30 minutes the temperature of the tube needs to be recorded.
Observations: You can divide the temperature increase by the direct sunlight in order to calculate the efficiency of the concave mirror solar heater. As the heat is transferred through the concave mirror and concentrated on the tube, the temperature of the water increase eventually after 30 minutes
Electric Generator
This particular model is intended to help students to understand the mechanism of electricity generation. The electric generator is also known as a wooden generator. Materials required to conduct this project are readily available at home. Hence it is economic as well. It is a simple yet fun experiment which produces electricity through mechanical energy.
Below are the prerequisites for conducting the project
Coil of Magnet WireNailStrong MagnetLightbulbWood PiecesSand PaperBase for lightbulbWood glueInsulation tape
Now let us see how it is to be implemented
Firstly we need to make a hole in the middle of wooden pieces. Then a large nail needs to be taken and threaded one of its circles. The quarter part of the nail is to be covered with a single layer of tape. While more tape to be added on the other sides of the circle.
The coil of magnet wire to be wrapped on the insulated part of the nail in between the two circles. Now, take a free end of the wire needs to be attached to a bulb or an LED.
Magnet to be brought close to the head of the nail and while holding it near it is to be moved from side to side. Then we will see the bulb or LED will start lighting up.
Observation: The magnetic field generated helps the model to operate. Depending on the number of wire turned including size of the coil, the voltage fluctuates. The strength of coil is directly proportional to the strength of the generated magnetic field. The magnetic field should be in continuous motion to induce electricity. The constant movement of magnet or coil is necessary for this. It should be moved in a systematic way so that the coil continuously stays near through the magnetic field.
The nail also helps in concentrating the magnetic field. It is wrapped with coil and boosts the efficiency of increase in voltage. Hence it acts as a magnetic flux.
Potato Battery
Potato contains many water substance chemicals that causes a chemical reaction when interacts with one or more electrodes. Batteries contain sulfuric acid as the electrolyte, while copper as zinc as
Answer:
A science exhibition was held on the 3rd of April, 2019 wherein students showcased static and working models which can be used for learning various scientific concepts for children of the age group 13-18 years. The objective was not only to inculcate a scientific attitude and research-mindedness but also creating teaching aids. It involves students to participate in activities so as to understand the cognitive, affective and psychomotor aspects of the task. Furthering this philosophy School of Education organized a science exhibition on the 3rd of April, 2019 where students showcased their talents in creativity and innovation. The Science Exhibition is held as part of the National Science Day celebration carried out at the School of Education.
Student-teachers from the Science group across all the programmes of the School of Education participated in this activity and made models which are used as teaching aids during their school internship programme later. They had chosen topics from NCERT Science books from Standard Six till Standard Twelve. A teaching aid is a very effective tool to make the classroom experience of the student very real and meaningful.
Students had made still models, working models, charts and posters to present their topics. Dr Priyanka Banerjee took the initiative of encouraging the students to put up such a wonderful and enlightening exhibition. The judges appreciated the students. They asked students about the scientific concepts forming the foundation of the models. Students had prepared models like water holding capacity of the soil, working of a windmill, the jet car was showcased along with the DC Motor based models. Charts based on the evolution of humans and biodiversity were presented well. The water dispenser model was a very unique one. Students were encouraged to develop a scientific fervour and an attitude of research mindedness so that they develop the qualities of analytical and critical thinking.
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