Ask an Expert (Page 96)

Absorption in plant soil

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

Absorption in plant soil Absorption in plant soil Hey, I’m doing a science fair project and its based on testing the different tensile strengths of spider silk when feeding them chemicals that should, in theory, increase the silk’s durability. This has been done before with graphene, and we want to use borophene since it seems like a better alternative. To do that we want to feed it to crickets (spider feed) through plants, and wondering if applying it to the soil of the plants that are used… Read more

Feasibility of experiment involving silver-nanoparticle resistant bacteria

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

Feasibility of experiment involving silver-nanoparticle resistant bacteria Feasibility of experiment involving silver-nanoparticle resistant bacteria Hi! I'm doing a project based on the "[i]Tiny Titans: Can Silver Nanoparticles Neutralize E. coli Bacteria?[/i]" experiment on the website. I'm trying to study the behavior of bacteria that can become resistant to silver nanoparticles. First, I'm going to streak half of a petri-dish with e.coli bacteria and coat the other half with varying… Read more

Help With Hypothesis

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

Help With Hypothesis Help With Hypothesis Hello, I am doing the project "Can Biodegradable Hydrogels Help Conserve Water in Farming?" and I need help with the hypothesis because there are so many components to the experiment I am having trouble figuring out how to write it. Can someone please help me? I need to finish this in two days!!! :( Re: Help With Hypothesis Hello! Since this project is centered on testing which of 3 different biodegradable hydrogels helps soil retain the most… Read more

Dealing with Diabetes: The Road to Developing an Artificial Pancreas

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

Dealing with Diabetes: The Road to Developing an Artificial Pancreas Dealing with Diabetes: The Road to Developing an Artificial Pancreas [attachment=0]potcircuit.pdf[/attachment]Hi, I created the artificial pancreas model using the 100K ohm resistor. It was successful but it overshot the threshold value, so I am trying to use a potentiometer, but it doesn't work. I don't know if my connectivity and code is correct, and I have attached my code and the circuit diagram to this post. Can someone… Read more

Question about Make Your Own Seismograph activity

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

Question about Make Your Own Seismograph activity Question about Make Your Own Seismograph activity Type your question below and then press Submit! ----how to know that a earthquake is happening --------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/make-a-seismograph]Make Your Own Seismograph[/url] Re: Question about Make Your Own Seismograph activity The "Digging Deeper" section of this… Read more

Build a Circuit to detect Ripe Produce Help

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

Build a Circuit to detect Ripe Produce Help Build a Circuit to detect Ripe Produce Help I’m doing the “Build A Circuit to Detect Ripe Produce” project and I need urgent help. I have plugged in all of my alerts correctly me and my father checked multiple times. I know my short and long legs are correct as well, as well as my mosfet and resistors and etc. My LEDs both light up when they are powered up with the batteries, but my red LED doesn’t dim when I use my potentiometer. Otherwise, no… Read more

Model Mass Driver Parts and Connections

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

Model Mass Driver Parts and Connections Model Mass Driver Parts and Connections When working on the Model Mass driver project, I found that there were no instructions about what to do with the breadboard or which connections to make on it. However, in the photo of the final project, I saw that there were connections made on the breadboard from various parts. Please help me on finding which wires to connect onto which part of the breadboard. [Administrator note: Project directions:… Read more

Issue With Arduino Clinostat for Microgravity Plant grow

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

Issue With Arduino Clinostat for Microgravity Plant grow Issue With Arduino Clinostat for Microgravity Plant grow HI, I am having issues with the coding part. When I copy the code into the IDE and save, I am not sure WHICH board and port to select. There are over 30 and the ones I thought would work, are not making the Arduino to work. Can someone HELP please???? Re: Issue With Arduino Clinostat for Microgravity Plant grow Hi, Can you answer some questions about exactly what steps you're… Read more

building a helping hand

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

building a helping hand building a helping hand how am i going to do my helping hand and what am i going to do Re: building a helping hand Is this the project you are doing? https://www.sciencebuddies.org/science-fair-projects/project-ideas/Robotics_p001/robotics/drinking-straw-robot-hand What specific questions do you have about your project? Amy Science Buddies Read more

Science Fair Idea

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

Science Fair Idea Science Fair Idea Hello! My name is Symone and I really love doing the science fair each year. Recently, while trying to come up with an idea, I thought about conducting an experiment where I test to see if getting an extra 20 minutes or so of sleep in the morning actually helps the body be more energized throughout the day. The way I would conduct this experiment would be through creating a simple machine that can track the brainwaves of a person sleeping. My only issue is… Read more

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