Ask an Expert (Page 40)

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Water Filter Project Assistance Water Filter Project Assistance Hi, my name is Symone and I'm in the 10th grade currently conducting a project about how tropical communities around the world can utilize natural and sustainable resources to create fresh water, free of harmful microbes. Right now, I am working on building three different water filter designs that all include sand and gravel as the base, with different sustainable and accessible materials that will vary from filter to filter. I… Read more

Artificial pancreas model

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Artificial pancreas model Artificial pancreas model Hey everyone I'm working on an artificial pancreas model, but I've been facing some issues in choosing the appropriate materials that are also available where I live. The project uses a 5-6 V peristaltic liquid pump with motor current 500 mA. This pump is unfortunately not an option for me but I found a mini submersible water pump 3-5v with 180 mA current. I also found an R385 DC 6-12V pump with 500-700 mA current. The project also uses an… Read more

Growing rock candy crystals project

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Growing rock candy crystals project Growing rock candy crystals project We are not sure if we conducted this project correctly, after making the sugar water solution the water is yellow and thick not clear like the picture. Does this mean the project was done wrong? Moderator: project https://www.sciencebuddies.org/science-fair-projects/project-ideas/FoodSci_p005/cooking-food-science/growing-rock-candy-crystals Re: Growing rock candy crystals project Hello! This color might be caused by… Read more

Need Help Making Blue Bot Work

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Need Help Making Blue Bot Work Need Help Making Blue Bot Work Hello, we purchased the Blue Bot 4-in-1 kit and have been trying to get at least one of the projects to work. In particular, we built the Line Following version of the robot and the problem is that one of the wheels spins much faster than the other. In addition, this fast spinning wheel spins on its own (i.e. without the sensor being exposed to white paper) if one toggles the MOSFET by touching it on the top. As a result when you… Read more

Projects in Petroleum engineering

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Projects in Petroleum engineering Projects in Petroleum engineering What are simple home-done projects in petroleum engineering using simple tools? Re: Projects in Petroleum engineering Hi! Just so that I can narrow your search down, do you know what you want to accomplish in this kind of a project? As in, do you want to explore ways of extracting oil? Or seeing what types of rocks have the most oil? Or is there something else you want to look into? If you want to see what types of rocks… Read more

Predicting Future water Quality with Machine Learning

Ask an Expert Topic Forum: Grades 6-8: Life, Earth, and Social Sciences

Predicting Future water Quality with Machine Learning Predicting Future water Quality with Machine Learning I'm currently working on this project and when I go to click the IPYNB file that opens the code (Google Colab) I need to put my data in, it says "No preview available". I've tried to open the code on multiple devices and it still doesn't work. Are there any solutions to this, or does the code need to be updated? Thanks. Re: Predicting Future water Quality with Machine Learning Hi -… Read more

Question about VOILa! Experimenting with Light Refraction activity

Ask an Expert Topic Forum: Grades 6-8: Physical Science

Question about VOILa! Experimenting with Light Refraction activity Question about VOILa! Experimenting with Light Refraction activity Type your question below and then press Submit! why doesn't it reflect on other things then glass ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/voila-experimenting-with-light-refraction]VOILa! Experimenting with Light Refraction[/url] Re: Question… Read more

Solar Powered Water Desalination

Ask an Expert Topic Forum: Grades 6-8: Life, Earth, and Social Sciences

Solar Powered Water Desalination Solar Powered Water Desalination I need to use a heat lamp as the source of heat for my water desalination project. It's winter and so I am using a 250W heat lamp as the heat source for my project. I needed to know how far should I keep my desalination device from the heat lamp so that it does not melt away the plastic cling wrap on the top of the desalination device. [Administrator note: Project:… Read more

How does nutrient and water self P.h itself

Ask an Expert Topic Forum: STEM Activities

How does nutrient and water self P.h itself How does nutrient and water self P.h itself Hi. Invented a hydroponic growing machine with a strange tendency. It self P.hs the nutrient solution. Not being a scientist. Would like to know why. My thoughts go towards gaseous exchange also static build up. Can you advise. Re: How does nutrient and water self P.h itself Hi - These forums are for students working on K-12 (elementary-through-high school) science and engineering projects. It sounds… Read more

Silver Nanoparticles Neutralize E. coli Bacteria

Ask an Expert Topic Forum: Grades 9-12: Life, Earth, and Social Sciences

Silver Nanoparticles Neutralize E. coli Bacteria Silver Nanoparticles Neutralize E. coli Bacteria Posted on behalf of student/family: ----------------------------- I am helping my son with the following science project. https://www.sciencebuddies.org/science-fair-projects/project-ideas/MicroBio_p031/microbiology/can-silver-nanoparticles-neutralize-e-coli-bacteria. I have the following questions: 1. We are able to use a lab of a professor at a local university and utilize their incubator for… Read more

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