Ask an Expert (Page 74)

Vegan Petri Dish

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

Vegan Petri Dish Vegan Petri Dish Hello! My daughter would like to do a science fair project on the 5 second rule and I am struggling to find petri dishes without Nutrient Agar, all of which seem to contain beef. We are vegan and would like to find or make an alternative without animal products. Can you please help? I came across malt extract and potato dextrose, but those seem to inhibit bacteria and promote fungi growth. Any tips or advice is much appreciated! Re: Vegan Petri… Read more

Electronics for a Bluetooth Speaker Sculpture

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

Electronics for a Bluetooth Speaker Sculpture Electronics for a Bluetooth Speaker Sculpture Hello all. I am working on a Bluetooth Speaker Sculpture. I can use some help configuring out how to wire the electronic components (motors, LEDs, and receiver/controller). The bluetooth speaker is already configured. I attached a picture to give a visual of the project.. Please excuse the typos. I've watched multiple videos and got a general idea. However, none of the videos have how to connect… Read more

KNN cancer diagnosis Adaptation (Breast Cancer / AI KNN)

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

KNN cancer diagnosis Adaptation (Breast Cancer / AI KNN) KNN cancer diagnosis Adaptation (Breast Cancer / AI KNN) I have already completed my first project on KNN and its application revolving Classifying cancer cells. However, this year I want to take it to the next level. To do this I want to not just classify the cancer cells as benign or malignant but instead classify them and cancerous or not. I have tried to accomplish this but in my research I have hit a dead end. So, I need a data set… Read more

"Does the Company Size Affect the Length it Takes to Backtrack to the Place of Defeat?"

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

"Does the Company Size Affect the Length it Takes to Backtrack to the Place of Defeat?" "Does the Company Size Affect the Length it Takes to Backtrack to the Place of Defeat?" I have a science fair in June and came up with this idea for a project. Earlier I had an idea about music but that one seemed uninteresting and so I came up with this idea. The if then statement would be "If on average, games produced by large scale (AAA) companies took less time for the player to… Read more

Question about Making Homemade Bath Bombs activity

Ask an Expert Topic Forum: STEM Activities

Question about Making Homemade Bath Bombs activity Question about Making Homemade Bath Bombs activity Type your question below and then press Submit! do bath bombs affect monkeys? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/make-bath-bombs]Making Homemade Bath Bombs[/url] Read more

oil spot (Bunsen) photometer

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

oil spot (Bunsen) photometer oil spot (Bunsen) photometer I don't understand why are the intensities of the two lights become the same when the spot disappears. I know that is probably dump but I can't find an answer for days and it is very urgent to know why so please help. Also somone told me that it is because the light (radiation) pressure from both the lamps is the same when the spot disappears but I can't find anything related between the two things and I am not sure if it is true. Re:… Read more

Variables

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

Variables Variables Hi, For my science project, I am testing the melting times of different types of chocolate. I put them in the shade and then in the sun. I know the types of chocolate are an independent variable. But, are the sun and shade also independent variables? Or are they controlled because they are the same for all the chocolates at the same time? Thanks for your help! Re: Variables Hello, Great experiment! You're correct; the different chocolate types are independent… Read more

10 Fascinating Science Experiments for Kids in Class 8

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

10 Fascinating Science Experiments for Kids in Class 8 10 Fascinating Science Experiments for Kids in Class 8 Today I read this article about 10 science experiments that you can easily perform. Thought of sharing it. [url]https://decodingbiosphere.com/kids-corner/science-experiments-kids-class-8/ [/url] Read more

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