Ask an Expert (Page 8)

Does the type of water effect the outcome? Make Popping Boba Balls Out of Your Drinks

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

Does the type of water effect the outcome? Make Popping Boba Balls Out of Your Drinks Does the type of water effect the outcome? Make Popping Boba Balls Out of Your Drinks Hi, on the "Make Popping Boba Balls Out of Your Drinks", one of the projects provided by Science Buddies, it is stated in the list of items to use "Cold Tap Water". In concern for consumption safety, since the boba's will be given to the elementary kids,[u] will the use of purified/distilled water affect the outcome?[/u] I… Read more

Refreshable Braille Display

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

Refreshable Braille Display Refreshable Braille Display I am writing to ask if it is possible to incorporate different language alphabets, specifically Spanish and French, into the Arduino code of the project. Additionally, I would like to know if these characters can be integrated seamlessly for use with the braille display and how to switch between the different letters using the solenoids. Moderator note: … Read more

Skin Senor Feasibility

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

Skin Senor Feasibility Skin Senor Feasibility How feasible is sodium loss estimation and tracking sweat rate from a skin sensor? My niece is working on her high school science project and she decided to focus on exercise and how much you sweat during various types of exercise modalities. (ie Yoga vs Cycling vs Zumba class etc.) She wants to figure out a way to measure someone's sweat rate, what they lose or deplete (electrolytes and minerals in the body) while exercising vs someone's… Read more

Scintillating Scents: The Science of Making Perfume

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

Scintillating Scents: The Science of Making Perfume Scintillating Scents: The Science of Making Perfume I am having problems with the Scintillating Scents: The Science of Making Perfume project. I'm trying to help a student with this for a science fair project. Our problem is that in the end we have no smell but the smell of alcohol. I'm not sure what we're doing wrong, but alcohol is the only smell. We used roses and Crisco shortening. Can anyone help with what we maybe did… Read more

"Build a Remotely Operated Vehicle (ROV) for Underwater Exploration" Modification

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

"Build a Remotely Operated Vehicle (ROV) for Underwater Exploration" Modification "Build a Remotely Operated Vehicle (ROV) for Underwater Exploration" Modification Hello, I was asking for some help on adding a modification to this pre existing kit to make the ROV be able to be able to change depth(1 motor extra) or to controll roll(2 motors extra), while still being able to use only two joysticks. What code and wiring would I need to do to be able to successfully make that… Read more

Help! Science Fair Project failed ... twice

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

Help! Science Fair Project failed ... twice Help! Science Fair Project failed ... twice I’m trying to help my daughter analyze her project results & determine possibilities as to why her Science Fair Project failed. She chose to do the Something’s Fishy About That Fertilizer project from the Science Buddies website but it failed. The daphnia died almost immediately and the duckweed didn’t grow or multiply at all and in fact slowly died as well. She did the experiment twice & followed… Read more

Help! No smells in Scintillating Scents: The Science of Making Perfume Question

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

Help! No smells in Scintillating Scents: The Science of Making Perfume Question Help! No smells in Scintillating Scents: The Science of Making Perfume Question I am having problems with the Scintillating Scents: The Science of Making Perfume project. I'm trying to help a student with this for a science fair project. Our problem is that in the end we have no smell but the smell of alcohol. I'm not sure what we're doing wrong, but alcohol is the only smell. We used roses and Crisco… Read more

Question about Make a Rubber Band Guitar activity

Ask an Expert Topic Forum: Grades K-5: Physical Science

Question about Make a Rubber Band Guitar activity Question about Make a Rubber Band Guitar activity Why add the pencils in the rubber band guitar? Why no slits cut for rubber band to be fitted ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/rubber-band-guitar]Make a Rubber Band Guitar[/url] Re: Question about Make a Rubber Band Guitar activity Hello, This is a fun activity! I think… Read more

Physics -- PSI and Basketball Bounce Height

Ask an Expert Topic Forum: Interview Requests

Physics -- PSI and Basketball Bounce Height Physics -- PSI and Basketball Bounce Height My project is about how the PSI in a basketball affects the bounce. What is PSI? What is the recommended PSI for a basketball? What happens if a basketball does not have enough air? What happens if a basketball has too much air? Why is it important to keep PSI in the recommended range? How could you test how PSI affects bounce height? What variables should stay the same during the experiment? Why… Read more

Questions regarding the Maglev Train project.

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

Questions regarding the Maglev Train project. Questions regarding the Maglev Train project. I have some questions about this project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Phys_p093/physics/maglev-train-weight?ytid=KQH2UhHss6c&ytsrc=description Will the magnetic tape be strong enough to hold the train's weight? Can I replace the magnetic tape with neodymium magnets? Can the train work if neodymium magnet is 10mm wide? Thank you for your time. Re:… Read more

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