Ask an Expert (Page 19)

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

Automatic Plant Watering Project Automatic Plant Watering Project When trying to calibrate the soil moisture sensor, step 3 says the serial monitor in Arduino should read 0 when the probes aren't touching anything. We get a reading of 13 and 14. It also changes very little when we touch the probes with a finger. Can you please advise as to why we aren't getting a reading of 0? [Administrator note: Project:… Read more

Wily Waves - Question about building the water column

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

Wily Waves - Question about building the water column Wily Waves - Question about building the water column We are confused as to whether we need to cut the abs pipe. We know we need to dunk the column at least up to the 6 ft mark, and then we need a few feet to hold on to the pipe. The instructions below are confusing. They say to measure the distance between the pool edge to the start of the water, but then say that it has to be a min of 5 ft and to record at 5 ft regardless of the actual… Read more

Ultrasonic Levitation Not Functioning

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

Ultrasonic Levitation Not Functioning Ultrasonic Levitation Not Functioning I believe that I have completely followed the directions up to this point that regard the building of an Arduino ultrasonic levitator. The fact of the matter is that it does not work at all. What I mean by this is the ultrasonic transducers do not make any sound and have no electrical current running through them no matter what I do. I am currently using the 12 volt power supply with the h-bridge. The one thing that I… Read more

Earthworms and soil

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

Earthworms and soil Earthworms and soil I’m wanting to test how/if different types of earthworms affect the soil in my yard specifically for science fair. For example, I would dig in the same area of my yard, fill 3-4 containers, add different earthworms to each container, observe which would best benefit my yard. Is this controlled enough for testing? Re: Earthworms and soil Hi! This seems like a great experiment but I would give two main suggestions. Firstly, make sure that you have a… Read more

Artificial Pancreas Water pump

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

Artificial Pancreas Water pump Artificial Pancreas Water pump I wanted to do Artificial Pancreas for my science fair. The issue is that the materials are not readily available in my country. So I’ve managed to get an alternative. For the pump, I’ve the 3V 5V Submersible water pump with a tubing. I’ll attach an image of it. I thought i can place it in the container containing tap water (insulin) and the outlet tube will pump water into the Distilled water. So since it’s quite different from… Read more

Question about DIY Mini Drone: Motion Control activity

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

Question about DIY Mini Drone: Motion Control activity Question about DIY Mini Drone: Motion Control activity Type your question below and then press Submit! See, I don't have the same accelerometer as you. I only have a Module Gyro(MPU6050). How do I connect it? :?: :!: ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/drone-motion-control]DIY Mini Drone: Motion Control[/url] Re:… Read more

Help: effects of Polyphenols on Protein Aggregation for Alzheimers

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

Help: effects of Polyphenols on Protein Aggregation for Alzheimers Help: effects of Polyphenols on Protein Aggregation for Alzheimers Hi, I am working on a project for a regional science fair. (Goal is to go to a top-level competition, such as ISEF or JSHS). My topic Investigates the effects of certain Polyphenols on Protein Aggregation (LLPS) for Alzheimers. I'm planning on using split green peas as my environment. Is this something thats doable and high-level? Read more

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

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