Desalination Using Cellulose Acetate Membrane From Cassava Skin In everyday life water is widely used for industrial needs and even households. But the longer the existence of clean water is getting more limited, so we need to find ways to get quality water. One of them uses the potential of seawater using the process of…
A lava lamp (or Astro lamp) is a decorative novelty item, invented in 1963 by British accountant Edward Craven Walker, the founder of the British lighting company Mathmos. The lamp consists of a bolus of a special coloured wax mixture inside a glass vessel, the remainder of which contains clear or translucent liquid, the vessel…
The water cycle or also known as the hydrological cycle is a state that describes how water moves continuously on Earth. Water cycle through different stages include: Evaporation, Condensation, precipitation and flow. Then go back to the evaporation stage. The whole cycle begins again and hence the name “water cycle”. Stages of the Water Cycle…
Purpose: Determine the levels of beverages that have the highest glucose concentration levels after adding enzymes, invertase the following drinks Coke, Red Bull, Gatorade, Arizona Green Tea, and Sunny D? Hypothesis: Coke will have the highest glucose concentration level because it has the maximum sugar from the rest of the drink so that after the…
Indonesia country is an archipelago country that still many areas that are still isolated and there is no electricity and electricity reachable by PLN. Whereas electricity or lighting is needed by the area so that the area is not behind in obtaining information that aims to promote the area and can increase the community’s productivity….
This teapot is not just any ordinary teapot, created by Okti Nurhidayah, a student from SMA Negeri 1 Sampang, Cilacap Regency, Central Java, Indonesia, can change the contaminated water to be consumed, even salty sea water into fresh water that can be drunk. Teko is a container of drinking water made of clay, this household…
Water is the source of human life, animals, and plants. In human life, water is used in all areas of life. In household activities, water is used for drinking, washing, bathing and latrines. Someone in developed countries ordains 250 liters of water every day, while in developing or poor countries, the water requirement per day…
Preface Microscopes (Greek: micros = small and scopein = see) is a tool to see objects that are too small to see in the naked eye. A microscope is a tool that can be found almost throughout the laboratory to be able to observe small (microscopic) organisms. Maybe for most students in Indonesia are familiar…
Preface Electricity can be made when certain chemicals react together. We usually use chemicals to make electricity for example on a flashlight, a clock battery or sometimes a car battery. There are cars that run on electricity! Devices that store electricity are called batteries. Instead electricity can also be used to produce chemical changes or…
These two students are Rizka Amelia, Leonardo Sutomo they are students from Wijaya Putra Junior High School Surabaya which is one of the finalists as well as the work received quite a lot of appreciation from the visitors as well as from other guests in the scientific writing competition junior high school level in East…