Ask an Expert (Page 37)

Tiny titans E coli didn't grow

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

Tiny titans E coli didn't grow Tiny titans E coli didn't grow Good morning, Last week my son performed the Silver nanoparticles neutralizing E coli experiment. Even though we followed all the steps in a college lab where we used an incubator, the E coli did not grow on any of the agar plates. We are not sure whether the freeze dried E coli we used was not a good sample or the agar plates were not optimal or unknown reason. The instructions for reconstitution of E coli were conflicting. On… Read more

Can exercise make your brain work better?

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

Can exercise make your brain work better? Can exercise make your brain work better? The science experiment includes a two groups of people. One group doing a sedentary activity while the other group does some type of exercise. Can I have less than 8 people total to complete the experiment? Can I have a 3 people in each group? Moderator: project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Sports_p011/sports-science/exercise-brain-body-connection Re: Can exercise make… Read more

egg drop

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

egg drop egg drop Would socks and a plastic container with lid on, be a good material for a protective shell for the egg drop? I'm dropping the egg from 5 feet, 7 feet, and 9 feet. I'm supposed to find and answer for the question but I can't find anything. Re: egg drop Hi! Egg drops are super fun! You have the right idea of padding the eggs fall with the socks, which slows down the impact on the ground. Something you should consider is that there are two ways to minimize the force of the… Read more

candle carousel

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

candle carousel candle carousel Hi! One of my students is doing her project on the candle carousel that she found here on science buddies. She has made the carousel and followed all the instructions, but can't get it to work. I saw there were some troubleshooting ideas we can use, but thought I would post here to get any help we can. Any helpful hints on getting this project to work correctly? THanks - Sara Stewart [Administrator note: Project url:… Read more

Breast Cancer AI Detection Adaptation

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

Breast Cancer AI Detection Adaptation Breast Cancer AI Detection Adaptation I completed the AI detection of breast cancer and I wanted to make something different from it. Can you suggest me any variations or recommendations for those who wants to further improve it aside from the stated variations on the project at the end of it? Can I change the current csv file dataset with other kinds of dataset? Re: Breast Cancer AI Detection Adaptation Hi - It's great that you did the Breast Cancer… Read more

Use Machine Learning to Identify Lyme Disease-Transmitting Ticks

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

Use Machine Learning to Identify Lyme Disease-Transmitting Ticks Use Machine Learning to Identify Lyme Disease-Transmitting Ticks I NEED HELP!! I was doing the code, and when I run code block 2A, where I view the images, it doesn't work! I keep getting this error: InvalidArgumentError Traceback (most recent call last) <ipython-input-19-4d7074ac3861> in <cell line: 12>() 10 file_pattern = glob.glob ("/content/drive/MyDrive/tick_identification/data/A.… Read more

Help! Jumping Robot won't Jump

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

Help! Jumping Robot won't Jump Help! Jumping Robot won't Jump My robot isn’t jumping please help [Administrator added: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Robotics_p047/robotics/rubber-band-jumping-robot + See this thread: https://www.sciencebuddies.org/science-fair-projects/ask-an-expert/viewtopic.php?p=75621&hilit=jumping+robot#p75621 ] Re: Help! Jumping Robot won't Jump Hi Radenisb, This project can definitely take some tweaking to get the robot to… Read more

How to Find the average of three measurements?

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

How to Find the average of three measurements? How to Find the average of three measurements? I'm doing the electrolyte challenge project and one of the steps requires that I average the liquids that I measured in 3 tests. How do I do that? Moderator note: Project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Chem_p053/chemistry/electrolyte-challenge-orange-juice-vs-sports-drink Re: How to Find the average of three measurements? Hello, This sounds like a fun… Read more

Cell Phone Spectrophotometer Project on sciencebuddies

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

Cell Phone Spectrophotometer Project on sciencebuddies Cell Phone Spectrophotometer Project on sciencebuddies I am unable to use the software to test my images through the diffraction grating and cannot generate an absorbance spectrum. Is there another software I could use besides the one this website gave? Moderator project? https://www.sciencebuddies.org/science-fair-projects/project-ideas/Chem_p100/chemistry/make-a-cell-phone-spectrophotometer Re: Cell Phone Spectrophotometer Project on… Read more

Graphing Reciprocals for Iodine Clock lab

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

Graphing Reciprocals for Iodine Clock lab Graphing Reciprocals for Iodine Clock lab Hello :) My students are preparing to do a modified version of your Iodine Clock lab later this month as part of learning about reactions. I would like to prepare them to know how to set up and graph reciprocal reaction rates as this lab. I understand that the reciprocals go on the y axis, what I'm unsure of is how they are arranged on that axis. Is there an online resource that demonstrates how these types of… Read more

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