In this category, we add all the diy school project models for secondary school students,(Class 9 / Grade 9).
Where students can do themselves step by step for their school exhibition or fair
Introduction Imagine humans and animals stay alive through food and water. Similarly, plants also need food and water to stay alive. This process where the plants survive is called as photosynthesis. Plants breathe carbon dioxide from the air and release oxygen back into the air. They also use the sunlight and water to carry out … Read more
Introduction The greenhouse effect is the process in which the gases in the atmosphere of the earth trap the heat from the sunlight and release more heat and radiation on to the earth. The important greenhouse gases are: Thus increasing the temperatures on the earth. In simple terms, it is the process that warms up … Read more
Introduction In simple terms, global warming definition is nothing but an increase in the temperature of the earth’s climate system is called global warming. Earth is made up of the oceans, land, air, plants, and animals. The energy coming from the Sun affects each other. There are dependencies between these places. If something changes in … Read more
Introduction You might be scratching your head on what is air pollution. Air pollution is caused due to the solid and liquid particles and also due to certain gases that are suspended in the air. These suspended particles and gases can come from various channels such as car and bus exhaust, factories, dust, pollen, and … Read more
Introduction Noise is measured in Db (decibels) for the normal human ears any sound levels less than 70 Db are less damaging to the living organisms. If any sound goes beyond the 70dB then it needs to treat as noise pollutions due to impacts the living beings as well adverse effect in humans and animals. … Read more