Ask an Expert (Page 56)

Popping boba diameter

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

Popping boba diameter Popping boba diameter I tried the spherification/ popping boba experiment. The video shows very small approximately 2 mm boba being created, but then it also shows larger approximately 8 to 10 mm boba . I've tried in vain to find a syringe that has a larger diameter output, but they don't seem to be available (probably because they need to lock with standard size needles). Could you share a method for creating larger droplets and therefore larger boba? Thank you Re:… Read more

Need Ideas - related to Medical/Human Body

Ask an Expert Topic Forum: Grades K-5: Life, Earth, and Social Sciences

Need Ideas - related to Medical/Human Body Need Ideas - related to Medical/Human Body We have been trying to explore topics and my son is interested in doing something in the medical field related to Human body. the last time he did one about effect on various drink on tooth enamel - which he won a prize for, but now he wants to do something related to another organ/body part that is going to be critical for the other students to know about. I looked at the topics suggested but he doesn't… Read more

Microplastics Consumption

Ask an Expert Topic Forum: Grades K-5: Life, Earth, and Social Sciences

Microplastics Consumption Microplastics Consumption My daughter in 4th grade wants to do a science fair project related to how much plastic are we consuming unknowingly on a day to day basis. I am not sure how to measure it to prove the amount of plastic consumption and how to make it testable and measurable. Any ideas ? Re: Microplastics Consumption Hello, This seems to be a very large undertaking for a fourth grade science project. A good idea would be to narrow down your topic before… Read more

Thyroid Cancer Recurrence

Ask an Expert Topic Forum: Grades 9-12: Math and Computer Science

Thyroid Cancer Recurrence Thyroid Cancer Recurrence Hi, I am getting this error when running Code Block 1Z. --------------------------------------------------------------------------- ValueError Traceback (most recent call last) <ipython-input-140-20fc8ed86092> in <cell line: 2>() 1 # Fitting the model to the training data (X_train) and corresponding labels (y_train) ----> 2 model.fit(X_train, y_train) 6… Read more

Arduino boards

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

Arduino boards Arduino boards Hello, We purchased the kit for the plants in microgravity project. We wired Arduino board according to the diagram provided and it is not working. We also noticed a different wiring in the picture where it is mounted and in the video as well. Still no success. We have checked everything. Any suggestions? [Administrator note: Project url:… Read more

Measuring Wood Burning

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

Measuring Wood Burning Measuring Wood Burning We are doing the "Which Kind of Wood Burns Slower" science fair project. How would we go about measuring which burned slowest? Any advice on how we would collect that data? (Admin added - PI link: https://www.sciencebuddies.org/science-fair-projects/project-ideas/MatlSci_p026/materials-science/which-kind-of-wood-burns-slower ; broken links in the bibliography have been reported and will be updated.) Re: Measuring Wood Burning Hello, This… Read more

floating spinach leaves

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

floating spinach leaves floating spinach leaves I did a lab in school on photosynthesis and floating spinach leaves. My group followed the steps in the lab. Our spinach leaves didn't sink and then start to float. They just floated when we poured them in the petri dish. What went wrong? Re: floating spinach leaves Hello, https://www.sciencebuddies.org/science-fair-projects/project-ideas/PlantBio_p020/plant-biology/chlorophyll-extraction is this your experiment? If so you are supposed to rub… Read more

Light Tracking Bristlebot HELP

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

Light Tracking Bristlebot HELP Light Tracking Bristlebot HELP Having trouble with our bots. Teaching a stem class with 15 students. Only two bits worked correctly. Trouble seems to be with the potentiometers. We purchased our parts in bulk and NOT the kit. The potentiometers we purchased have offset prongs. The bot motors work when these are removed. When we set them into position and turn the knobs the motors do not work. Keep in mind we have two that work perfect even after being… Read more

Solar powered robots to use

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

Solar powered robots to use Solar powered robots to use Hello, I am making a science fair project based off of either of these two questions: "Is solar power beneficial to our community?" & "Will robots be integrated into our everyday lives?". For the first one, I am planning on using machinery to show how solar power can be translated onto actual machines and such. However, I don't know where to find simple solar-powered robots. Can you guys help? :D Thanks, AJ Will robots be… Read more

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