Ask an Expert (Page 129)

Different Material

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

Different Material Different Material Hi. I'm making a soil moisturizer sensor but I'm using a different kit. I have all the materials I need but the breadboard is different. Will it still work? Re: Different Material Do you mean your breadboard is a different size or from a different company? If so it should work just fine. Breadboards pretty much all work in the same way. Re: Different Material Hi - please see our breadboard tutorial page. If nothing else, watch the whole video at the… Read more

Human Behavior Science Project Help Needed

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

Human Behavior Science Project Help Needed Human Behavior Science Project Help Needed Hello, For a science fair, I am doing a science project about social media's impact on social behavior. The participants of this experiment are in 3 different age groups and 1 control group of people who don't use social media often. My research will be mostly based on surveys and self observation. But I was wondering if I could have any help on more ways to accurately research this topic. The outcome of… Read more

Does iron and water make hydrogen gas?

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

Does iron and water make hydrogen gas? Does iron and water make hydrogen gas? What happens if you get half a jar of iron powder, add water to the top of the iron to saturate it, pour off the excess water and evacuate all the air above the wet iron mixture, then seal the jar? Does the bottle fill up with hydrogen or other gas? Re: Does iron and water make hydrogen gas? I assume you are referring to rust when you mix water and iron. From what I have read, it seems like iron will not rust… Read more

Interactive servo art not working

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

Interactive servo art not working Interactive servo art not working Hello, I have been helping my daughter try to build the interactive servo art that moves when it sees you. We built it according to the instructions and it isn't working properly. So, we rebuilt it several times. We made sure that the wires were all pushed in. When we rebuilt it, we used new parts. The motor moves once when the circuit is charged and then it doesn't work any longer. Do you have any tips to get this… Read more

project presentation for computer science project

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

project presentation for computer science project project presentation for computer science project Hi, I am planning to create a website for my science fair. I am planning to present the website to the judges. What else can I show on my presentation, should it be treated like a engineer design project showing Problem statement, Design etc. Thank you! Re: project presentation for computer science project Hello, This seems like a great idea for a science fair. I think how you present it… Read more

How to kill antibiotic resistant bacteria?

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

How to kill antibiotic resistant bacteria? How to kill antibiotic resistant bacteria? So, I’m working on artificial selecting for antibiotic resistance, and one of my responsibilities is to write my own lab protocol (it’s a smaller school so I’m the only one on it). Part of that is disposing of the bacteria after, and I really don’t want to become a biohazard. So… how should I kill it? We don’t have an autoclave or anything (again, small school). Re: How to kill antibiotic resistant… Read more

How to culture bacteria

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

How to culture bacteria How to culture bacteria I would like to culture the strep A bacterium. I am trying to teach my son about bacteria and I’m rusty at microbiology. I happen to get frequent strep throat and thought that would be a good bacteria to learn about considering. I haven’t been in school since 2007 and have memory issues so help us needed. It’s embarrassing, but it is what it is. Any help will be greatly appreciated. Also, can this be done without an incubator? Thank you! Edit:… Read more

Question about DIY Mini Drone activity

Ask an Expert Topic Forum: STEM Activities

Question about DIY Mini Drone activity Question about DIY Mini Drone activity Is there a way I can make it fly and still control its altitude when it's not on the dowel? :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :? :D :D :D :D :D :D :D :? :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D :D … Read more

Help! Artificial Pancreas: pump doesn't turn on!

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

Help! Artificial Pancreas: pump doesn't turn on! Help! Artificial Pancreas: pump doesn't turn on! Hello, I need help urgently. I am doing the Dealing with Diabetes: Road to developing an Artificial Pancreas experiment. My peristaltic pump turns on when I connect it to the Arduino uno, to check if it is working. However, whenever I connect it to the breadboard, which is what the experiment calls for, it doesn't turn on. How can I fix this? Is it a problem with the Mosfet or computer code? I… Read more

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