Ask an Expert (Page 129)

Bacterial Resistance Experimental Procedure Clarification

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

Bacterial Resistance Experimental Procedure Clarification Bacterial Resistance Experimental Procedure Clarification Hello, I am currently preparing to conduct the“Bacterial Resistant Materials and the Best Disinfectant” experiment, and I’m not sure if I’m understanding the procedure correctly. Are you supposed to introduce bacteria to the cleaning materials in the first half (like using a piece of an old used sponge) or are you supposed to use clean, new supplies and incubate them in saline… Read more

Question about Build a Rubber Band-Powered Car activity

Ask an Expert Topic Forum: STEM Activities

Question about Build a Rubber Band-Powered Car activity Question about Build a Rubber Band-Powered Car activity Type your question below and then press Submit! why do we sleep? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/rubber-band-car]Build a Rubber Band-Powered Car[/url] Read more

Statistical test for temperature over time?

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

Statistical test for temperature over time? Statistical test for temperature over time? For my project, I wanted to see how changing the colors of the roofs of buildings would affect indoor temperatures. I had three model buildings with different colored temperatures and tracked the temperatures inside them every 15 minutes for 3 hours. I'd like to see if the roof colors had a significant difference on the temperatures, so what would be the best way to analyze all of my raw… Read more

windchill above 50 degrees

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

windchill above 50 degrees windchill above 50 degrees you feel colder at room temp with a fan but windchill is only under 50 degrees so what is it called over 50 degrees then? If there is no word for it i just need to know if its possible to measure how much quicker an object cools with wind (above 50 degrees) Re: windchill above 50 degrees Hello! You're right that the term windchill is usually only used when it's below 50 degrees. But if you're doing a science project where you're testing… Read more

Question about Turn Milk into Plastic activity

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

Question about Turn Milk into Plastic activity Question about Turn Milk into Plastic activity Type your question below and then press Submit! I am wondering whether there is a chemical formula for what happens in the Milk Plastic activity. Gailyn Ryan ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/milk-into-plastic]Turn Milk into Plastic[/url] Re: Question about Turn Milk into… Read more

Carnival Games are they rigged and how to win

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

Carnival Games are they rigged and how to win Carnival Games are they rigged and how to win Hi I am doing a project on Carnival Games to figure out how to win rigged games or what are tips to win games. Can an expert answer these questions I have for my project? 1. Is it illegal to rig carnival games? 2. How are carnival games scams? 3. Can you still win a rigged game? 4. What should you look for to not get scammed? 5. What are the easiest carnival games to win? 6. Is the cost of the… Read more

research

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

research research I'm a STEM student humbly asking for your assistance. I'm now working on a research project about the effectiveness of an alternative laundry bleach (which is my product) and one of my quantitative indicators are about comparing the stains removed on clothes after using stain removers of difference mixtures. I found your reply on a student way back in 2017 that you can measure the clothes quantitavely via ImageJ, my problem is I don't know how to use it and I don't have… Read more

Different Material

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

Different Material Different Material Hi. I'm making a soil moisturizer sensor but I'm using a different kit. I have all the materials I need but the breadboard is different. Will it still work? Re: Different Material Do you mean your breadboard is a different size or from a different company? If so it should work just fine. Breadboards pretty much all work in the same way. Re: Different Material Hi - please see our breadboard tutorial page. If nothing else, watch the whole video at the… Read more

Human Behavior Science Project Help Needed

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

Human Behavior Science Project Help Needed Human Behavior Science Project Help Needed Hello, For a science fair, I am doing a science project about social media's impact on social behavior. The participants of this experiment are in 3 different age groups and 1 control group of people who don't use social media often. My research will be mostly based on surveys and self observation. But I was wondering if I could have any help on more ways to accurately research this topic. The outcome of… Read more

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