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Question about Soil Moisture Detector circuit

Ask an Expert Topic Forum: STEM Activities

Question about Soil Moisture Detector circuit Question about Soil Moisture Detector circuit Here is the link to the project I am talking about: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_p066/electricity-electronics/build-an-electronic-soil-moisture-sensor-to-conserve-water I have tweaked this circuit and reconstructed it several times. It worked originally, but now the LED light never fully turns off like it did before. Instead, it dims when moisture is… Read more

Enzyme detergent science project

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

Enzyme detergent science project Enzyme detergent science project Hi we are doing the science for a project with the laundry detergent containing enzymes and one not continuing times and our hypothesis was that the 1 With enzymes would work better than the one without but they actually work exactly the same They got out the same stains and the truth is that didn't come out. Look the same on both so now we know our hypothes as was incorrect but we don't know where to go from for here for the… Read more

How to Build a Career in Computer Science Without a Degree

Ask an Expert Topic Forum: Grades 6-8: Math and Computer Science

How to Build a Career in Computer Science Without a Degree How to Build a Career in Computer Science Without a Degree The field of computer science is one of the most dynamic and fast-growing industries in the world. However, not everyone has the means or the time to pursue a degree in this field. The good news is that there are many paths you can take to build a successful career in computer science without a degree. In this article, we'll discuss various strategies and tips that can help… Read more

Like this and my info

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

Like this and my info Like this and my info I really like this forum.. it helped me to understand more about science and it possibilities.. But also for my perfect studying I use [url=https://advanced-writer.com/]https://advanced-writer.com/[/url] especially when I have problems with my writing tasks.. so I decided to share it with you too.. hope that you will like it like me)) Read more

Green Chemistry - Biofabric Activity

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

Green Chemistry - Biofabric Activity Green Chemistry - Biofabric Activity My middle school classes have been trying to make the biofabric following the procedure in your activity. It has not been very successful. We have not been able to get many of the dried materials to release from the material that we poured it into. We have also tried putting it on saran wrap over the fabric, using a fruit leather tray in a dehydrator, and finally in petri dishes. Petri dishes ended up being the most… Read more

Question about Junkbots: Robots from Recycled Materials activity

Ask an Expert Topic Forum: STEM Activities

Question about Junkbots: Robots from Recycled Materials activity Question about Junkbots: Robots from Recycled Materials activity Can I use a propeller fan instead of cork ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/build-a-recycled-robot]Junkbots: Robots from Recycled Materials[/url] Read more

Question about Junkbots: Robots from Recycled Materials activity

Ask an Expert Topic Forum: STEM Activities

Question about Junkbots: Robots from Recycled Materials activity Question about Junkbots: Robots from Recycled Materials activity Can I use a propeller fan instead of cork ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/build-a-recycled-robot]Junkbots: Robots from Recycled Materials[/url] Re: Question about Junkbots: Robots from Recycled Materials activity Hi - you need to use an… Read more

Similar Triangles Using Parallax to Measure Distance

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

Similar Triangles Using Parallax to Measure Distance Similar Triangles Using Parallax to Measure Distance I am in 8th grade geometry, but doing this project for science. I was wondering what a good independent and dependent variable would be to test? [Administrator note: Project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Astro_p019/astronomy/similar-triangles-using-parallax-to-measure-distance ] Re: Similar Triangles Using Parallax to Measure Distance Hi! That is… Read more

Nitrogen Affects Plant Growth Experiment

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

Nitrogen Affects Plant Growth Experiment Nitrogen Affects Plant Growth Experiment How does nitrogen affects plant growth experiment? Please give the purpose, hypothesis, possible materials, and three resources would be very much appreciated. I do not understand the meaning of a "control" in this experiment as there needs to be 3 plants: one with nitrogen, one without nitrogen, and the control. Please inform me what I should do for the control plant (like how much nitrogen or things should I… Read more

Servo Motors for a Clinostat

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

Servo Motors for a Clinostat Servo Motors for a Clinostat I'm using a servo motor that requires a screw to attach the blade, creating a hump at the head of the screw... I need to apply double-sided tape on top of it but that won't work if the blade is not flat, which it isn't because of the blade. Any suggestions? Re: Servo Motors for a Clinostat Not knowing the specifications, its hard to tell, but you could try either sanding down the screw head or finding a flat head screw. You could… Read more

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