Ask an Expert (Page 36)

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

Ardiuno Clinostat Beginner error Ardiuno Clinostat Beginner error Hey, I am new to ardiuno and coding and once I had posted the code (link: https://www.sciencebuddies.org/science-fair-projects/project-ideas/PlantBio_p054/plant-biology/plants-grow-microgravity-arduino-clinostat), the servo motor was getting controlled by the potentiomotor, and it was moving while i turned the potentiomoter. Although in the actual clinostat shown in the video, the servo motor is continously moving and the speed… Read more

Glitch in Object detecting goggles

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

Glitch in Object detecting goggles Glitch in Object detecting goggles Hello, I have a question regarding the object-detecting goggles you discussed on your website. So, I made the circuit and everything works alright but the code is not working well. Because sometimes even when no object is present, the buzzer makes small beeping noises. I have put in the direct code from your website; i.e. copying and pasting it onto the Arduino IDE. I've also checked with the serial monitor but to no… Read more

Orange and avacado peel polymer

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

Orange and avacado peel polymer Orange and avacado peel polymer Hi, Have been doing this super absorbent polymer that kiara has done and I have been using these type of methods For the Preparation of the Orange peel Polymer, 6 full oranges were peeled, including as much pith as possible and left to simmer in 50 mL of lemon juice for 1 hour. The orange peels were then placed in a stainless pot (unreactive) filled with 500 mL of distilled water and left for 1 hour before bringing it to a… Read more

Soil Moisture Sensor

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

Soil Moisture Sensor Soil Moisture Sensor Posted on behalf of student ------------------------------------- I ordered the electronic sensors kit. I want to build the soil moisture sensor and I made sure I followed all the instructions on your website. I made sure nothing is touching each other and the the lightbulb is placed the right way. However, I cannot get the light to turn on. Can you please take a look at the pictures below and tell me what i have done wrong? Project url:… Read more

Glucose Project

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

Glucose Project Glucose Project Posted on behalf of family/students --------------------------------------------- My boys are doing a Sienice project. UNHIDDEN SUGARS IN YOUR FOOD We run to a problerm using controlled environment when we were testing glucose strip - adding 4 grams of glucose gave us only 0.5% - green we were unable get 2% of concentration. We bought another glucose tests and sane. We added 20 g to 200 ml than we got brown colour 2% . Just unsure if glucose is not strong ? Or… Read more

Predict air quality with machine learning code issue

Ask an Expert Topic Forum: Grades 9-12: Math and Computer Science

Predict air quality with machine learning code issue Predict air quality with machine learning code issue When I run the code provided with the experiment my MAE is 13.---- as I was reading trying to find out what that really meant, that is basically the amount of units the prediction is off by, but in the explanation it say that if it is about .13 its off by 13 units, I am just asking if I am doing the code wrong or is the explanation worded wrong, should my MAE be closer to .13? I am… Read more

Question about Build a Pizza Box Solar Oven activity

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

Question about Build a Pizza Box Solar Oven activity Question about Build a Pizza Box Solar Oven activity Type your question below and then press Submit! what is a purpose of building a solar oven ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/solar-oven]Build a Pizza Box Solar Oven[/url] Re: Question about Build a Pizza Box Solar Oven activity Hello Elitheyeetgod, Building a solar… Read more

Facial Recognition Error

Ask an Expert Topic Forum: Grades 9-12: Math and Computer Science

Facial Recognition Error Facial Recognition Error I am having a hard time with the last part of the code. I am getting an error after capturing a picture on my webcam. In the Zip files, there are no pictures or files in the "verification_images" folder. Should files be here? Moderator Note: Project:… Read more

Sucrose Glucose and Fructose OH My! Uncovering Hidden Sugar In Your Food

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

Sucrose Glucose and Fructose OH My! Uncovering Hidden Sugar In Your Food Sucrose Glucose and Fructose OH My! Uncovering Hidden Sugar In Your Food Hello, I am helping my daughter with this project. We’re not sure how many graphs we should have and how the data should be displayed. “Graph your results. Make a bar graph and put the food names of the samples on the x-axis and the glucose concentration on the y-axis. Include both glucose readings for each sample (before adding invertase and… Read more

Pet Treat dispenser data

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

Pet Treat dispenser data Pet Treat dispenser data So what would my data be about and what would i be testing? Moderator note - project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_p106/electricity-electronics/automatic-dog-treat-dispenser Re: Pet Treat dispenser data Hello imoncloud9, The automatic pet treat dispenser is a great project! There are many directions you could take to turn this into a science fair project. One idea is to dispense treats at a set… Read more

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