Ask an Expert (Page 15)

Measuring the oxygen content of air project

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

Measuring the oxygen content of air project Measuring the oxygen content of air project I have set up my project and am on my first day of taking results. 1. Does this project have to be done outside? I put the test tubes out overnight and two jars of water froze. 2. Are the test tubes supposed to be just slightly above the surface of the water or fully submerged into the jar of water? I put the test tube at the level of water a little bit down from the mouth of the test tube, but how can I… Read more

not sure what to do!!!

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

not sure what to do!!! not sure what to do!!! SOOOO... I know the science fair for my school is almost a month away but I'm not sure what to do it on! I know I want to do it on animals but I'm not sure what!!! :? Re: not sure what to do!!! Hi! You were thinking about something else (a different thread you started) and are still undecided, and now you're thinking about a project about animals? Is there a specific kind of animal you are thinking about or interested in and a question that… Read more

Ultrasonic Haptics project help

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

Ultrasonic Haptics project help Ultrasonic Haptics project help Posted on behalf of student Student is using Science Buddies kit Project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_p122/electricity-electronics/ultrasonic-haptic-feedback --------------------------------- I am doing the Ultrasonic Haptic Project. I followed all the instructions and bought all the listed parts. But no vibration is coming out of the transducer. What are common problems and their… Read more

incubator help

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

incubator help incubator help hello- my daughter is in 4th grade and is doing her first science fair project - Who's mouth is cleaner a dogs or a humans. She started the experiment and swabbed the dogs mouths and then swabbed the Petri dishes and we've been trying to incubate them but we're having some troubles. Our house is only about 70 degrees so I'm thinking it's not exactly the best environment for the bacteria to grow because most of the dishes have no growth on them and its been 48… Read more

Asking abouut anemometer prototyping from e-waste

Ask an Expert Topic Forum: Grades 9-12: 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

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

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