Ask an Expert (Page 165)

Wall adapter

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

Wall adapter Wall adapter For How Loud Can Paper Speakers Get?, we were told to buy Jameco Part no.: 380156, 12 V, 2 A DC wall adapter, but it is not available. We cannot tell which of the Jameco “substitutes" is a viable alternative. Can anyone help? Thanks. Paul Re: Wall adapter Hi - did you also buy the mini audio amplifier from Amazon linked in the materials list? If so, any other 12V, 2A wall adapter should work as long as the barrel plug dimensions are the same - 2.1mm x 5.5mm.… Read more

Question about how to show statistics for my project

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

Question about how to show statistics for my project Question about how to show statistics for my project Hello! So I am doing a project on finding the harmful effects/what biological processes can be disrupted when drug targeting the protein Kv4.2. But I was wondering what I should do for my statistics because my project doesn't really have them I guess? Like I was using the NCBI Gene Database for everything and different articles I found but the results I got don't really have any… Read more

Results For "Particles in the Mist: See Radioactive Particles Decay with Your Own Cloud Chamber!"

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

Results For "Particles in the Mist: See Radioactive Particles Decay with Your Own Cloud Chamber!" Results For "Particles in the Mist: See Radioactive Particles Decay with Your Own Cloud Chamber!" I would just like to ask if anyone has done the "Particles in the Mist: See Radioactive Particles Decay with Your Own Cloud Chamber!" lab and if so, they could tell me their results? Re: Results For "Particles in the Mist: See Radioactive Particles Decay with Your Own Cloud… Read more

Ocean Acidification Question

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

Ocean Acidification Question Ocean Acidification Question Hi, My son (9th grade) wants to try the Swimming in Acid experiment for his science fair project. I am his parent trying to help him, and have a background in chemistry but it has been awhile. One thing we wanted to try was to see if we could monitor the pH as the reactions are occurring by adding phenol red to the test jars. We are thinking of using 4 oz test jars. As long as we add the phenol red to the test jars at a… Read more

Need guidance for a computational biology project

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

Need guidance for a computational biology project Need guidance for a computational biology project I’m working on my science fair project which involves the spine and algorithms. How much of the code that I’ve generated should I explain in my presentation? Thank you for your help. Also would computer science be my category or health science or environmental science since this project would help forensics and archaeologists? Thank you for your help Re: Need guidance for a computational… Read more

Effect of Probiotics on Antibiotic Resistance

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

Effect of Probiotics on Antibiotic Resistance Effect of Probiotics on Antibiotic Resistance I had this idea for a science fair, I was thinking I could grow E. Coli in the presence of different probiotic foods on an agar plate, and then expose those to another agar plate with antibiotics to test the effects. My question is about the experimental design for this experiment. I was planning on putting the probiotic foods into the LB agar broth itself, and then plating the E. Coli on top of that.… Read more

What reflects IR light but not UVA/UVB?

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

What reflects IR light but not UVA/UVB? What reflects IR light but not UVA/UVB? Trying to find a material that is highly reflective of most/all IR/NIR light, whilst being minimally reflective, or ideally not reflective at all of UVA/UVB light. So far it seems like gold is a top contender. Two questions. 1) Is gold/gold-plated metal the best option? 2) Is it gold's composition or its color that exhibits these properties? Given the cost, could a gold-colored metal, or even gold aluminum foil,… Read more

what should I title my science fair project?

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

what should I title my science fair project? what should I title my science fair project? I am making a simple machine using the battery, magnetic wire, magnet and paper clips. I need to have a questions which will be my science fair project name. But I am not sure what would be a good question or title? I am making the machine now, but I need a question so I can have a hypothesis. Re: what should I title my science fair project? Hello Hankbaker and welcome to Science Buddies! I am not an… Read more

Question about building a paper speaker

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

Question about building a paper speaker Question about building a paper speaker Hello, I've scavaged the internet for what affects wire coil have on a paper speaker and have found no results. I am just wondering the role wire coil plays in a speaker. If anyone can guide me in the right direction, that'd be great. Re: Question about building a paper speaker You might find it helpful to read the background information for this student science… Read more

Question about Build a Paper Airplane Launcher activity

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

Question about Build a Paper Airplane Launcher activity Question about Build a Paper Airplane Launcher activity Type your question below and then press Submit! What are the dimensions of the wooden airplane launcher? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/paper-airplane-launcher]Build a Paper Airplane Launcher[/url] Re: Question about Build a Paper Airplane Launcher… Read more

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