Ask an Expert (Page 21)

Question about Hydroponics Made Easy activity

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

Question about Hydroponics Made Easy activity Question about Hydroponics Made Easy activity Type your question below and then press Submit! How can I explain to students what coconut coir is and how it proves that plants can group without soil? Can I skip this part altogether? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/hydroponics-activity]Hydroponics Made Easy[/url] Re: Question… Read more

Archaeology- site resources

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

Archaeology- site resources Archaeology- site resources Besides protective clothing, what do archaeologists use during field work to protect themselves and their site from the sun, rain and wind? How expensive is this equipment? How long does it last? Would an archaeologist working in the field benefit from having access to large vinyl tarps that are 10-20 mm thick, flexible, strong, UV resistant? These tarps could be used to create shade or as ground covers Read more

Question about DIY Mini Drone activity

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

Question about DIY Mini Drone activity Question about DIY Mini Drone activity The propellars are spinning and it looks like the drone wants to take off, but it doesn't. What should we adjust? Moderator note - Drone Project FAQ: https://www.sciencebuddies.org/science-fair-projects/drone-project-FAQ ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/diy-mini-drones]DIY Mini… Read more

Get water generated from air

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

Get water generated from air Get water generated from air [attachment=0]Screenshot 2025-10-12 005714.png[/attachment] Hi, Need to know if this design will be effective in getting water from air in a energy efficient manner or with very low energy input Moderator note: Similar project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/EnvEng_p034/environmental-engineering/experimenting-with-dew-traps Re: Get water generated from air Hi, This sounds like a great project! … Read more

Around the World: The Geometry of Shooting Baskets

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

Around the World: The Geometry of Shooting Baskets Around the World: The Geometry of Shooting Baskets How do you measure the angle and if I can't do that then what are my measurable results? Moderator note: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Math_p037/pure-mathematics/geometry-of-shooting-baskets Re: Around the World: The Geometry of Shooting Baskets Hello, This is a great project! There are a few ways to measure the angle depending on the focus of your… Read more

Ultrasonic levitator

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

Ultrasonic levitator Ultrasonic levitator Hello! We're working on ultrasonic levitator project. We managed to get it to work with one inverter but it was fairly weak - we got one piece of foam levitating but the transmitters were only about 1 cm above each other. We followed instructions to add additional inverter and the signal seems to be stronger but we are not able to levitate the foam pieces as they always fall off or are pushed off. Any ideas how to approach it / fix it?… Read more

Advanced Ecology

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

Advanced Ecology Advanced Ecology Good Day Experts! May you please suggest ideas for a very short research article (final requirement) that tackles on population ecology. I only have two months left to perform and write the report. Our teacher wants it to be experimental. My initial idea is to use fruit fly because they are faster to rear and can provide fast results. I want to subject a population/s to a specific parameter and see how would the population/s react (mortality? egg… Read more

Science Fair Project Question (Reducing Landfill Emissions)

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

Science Fair Project Question (Reducing Landfill Emissions) Science Fair Project Question (Reducing Landfill Emissions) Hi, I'm doing a project where I want to find the best method to reduce landfill gas emissions. I will do this by running an experiment with a simulated landfill in a bottle. However, I need help coming up with variables/methods for my experiments. I want 5 realistic and easily attainable methods, and so far I have 3 (control with normal landfill conditions, removal of… Read more

Question on the formula for finding the frequency when doing the ultrasonic transmitter project.

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

Question on the formula for finding the frequency when doing the ultrasonic transmitter project. Question on the formula for finding the frequency when doing the ultrasonic transmitter project. Hi I am back again with another question, i am trying to use the provided formula to find the frequency. periodMS = 4*numPulses*(Delaytime+digitalwritetime) Frequency(Hz) = 1/periodS i am using the formula but it is giving me an unrealistic frequency, when i use the variables given in the video the… Read more

Smart Automated Pill Dispenser

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

Smart Automated Pill Dispenser Smart Automated Pill Dispenser Hello! I am doing science fair currently and my project is a smart automated pill dispenser. Attached is my circuit board from tinkercad. So I am using an Arduino UNO R3 and I have an LCD That will display live RTC Clock, but it shows wrong time and date. It also makes me change the date and everytime I reset, it starts from 12 am. This is the only thing I need to fix and also I have to add specific timings for the beeping noise.… Read more

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