Ask an Expert (Page 17)

Asking abouut anemometer prototyping from e-waste

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

Asking abouut anemometer prototyping from e-waste Asking abouut anemometer prototyping from e-waste Originally, we planned to use a Reed Switch as the main sensor in our design. The problem is that in my country, it is extremely difficult to find Reed Switches in local electronics stores, and online delivery is slow and unreliable. We also tried looking for old devices to salvage the Reed Switch from, but most of the devices available to us either do not contain one or require complicated… Read more

Walking Robot

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

Walking Robot Walking Robot Posted on behalf of student/ family Project - https://www.sciencebuddies.org/science-fair-projects/project-ideas/Robotics_p057/robotics/simple-walking-robot ------------------------------- I have a question that I need your help with and hope you can help my son . My son is currently in 4th grade , he is doing a STEM PROJECT title DUILD A SIMPLE WALKING ROBOT . But when doing the DATA part , he only got 85% , and he doesn’t understand why .So I send you his… Read more

Developing an Artificial Pancreas

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

Developing an Artificial Pancreas Developing an Artificial Pancreas I'm unsure whether this is an issue with the multimeter or the water itself, but the reading for the tap water is always around 3.4 or something above 3. Compare this to my reading for the distilled water, which is usually around 2.3. I've scoured websites and the official Youtube video, but I can't figure out why this is occurring. Even when I pour in the tap water, the voltage for the distilled water goes down a little,… Read more

Accents and behaviors (social science)

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

Accents and behaviors (social science) Accents and behaviors (social science) This year for my science fair I wanted to dive into social science. My project goes into the human interaction category, so I do need a qualified scientist. My project is about bias towards certain accents; I wanted to give out a survey that includes demographic questions and have the surveyors "rate" their ability to empathize and feel trustworthiness for each accent. I attend Little Rock Central High School, and… Read more

Question about Make a Lemon Volcano activity

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

Question about Make a Lemon Volcano activity Question about Make a Lemon Volcano activity Type your question below and then press Submit! is a lemon volcano a Single replacement, double replacement,synthesis,decomposition ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/make-lemon-volcano]Make a Lemon Volcano[/url] Re: Question about Make a Lemon Volcano activity Hello, The lemon… Read more

Question about Elephant Toothpaste activity

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

Question about Elephant Toothpaste activity Question about Elephant Toothpaste activity Type your question below and then press Submit! I'm trying to do a science project but I don't have the stuff I need but it do to towmaro what do I do ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/elephant-toothpaste]Elephant Toothpaste[/url] Re: Question about Elephant Toothpaste… Read more

Germination

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

Germination Germination What are some plants that can grow well in germination? Re: Germination Hi! I think your question is asking which plants germinate easily. If you’re referring mainly to germination speed, some good options are: •Beans (Lima beans often germinate in under 3 weeks) •Radishes (especially Cherry Belle; they sprout very quickly) •Tomatoes (usually germinate in under 2 weeks) All of these germinate quickly under basic conditions like moisture, temperature and adequate… Read more

Question about Make a Fire Snake activity

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

Question about Make a Fire Snake activity Question about Make a Fire Snake activity Type your question below and then press Submit! Is it possible to use alcohol instead of lighter fluid and use black sand instead of white/beige sand? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/make-a-fire-snake]Make a Fire Snake[/url] Re: Question about Make a Fire Snake activity Hello, The fire… Read more

Drug Solubility

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

Drug Solubility Drug Solubility I am experimenting on which form of supplement (Liquigel, meltable, and hard shell) is the most efficient in delivering medication. What is a substance that I may use that is NOT unsafe to the human body and can be used in a non-laboratory environment that can mimic the stomach acid in the human body? Thanks, Omar T. :D Moderator Note: Some related… Read more

Build A Light Seeking Robot!

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

Build A Light Seeking Robot! Build A Light Seeking Robot! I finished doing the bread board, and everything is in the right place, and my potentiometers are semtryical. But my robot is spinning in circles, still moving forward but it does so on circles. And I also bought the kit. Why does it do that? Moderator Note: Links:… Read more

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