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Hydrogel project

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

Hydrogel project Hydrogel project Hi! My daughter tried the hydrogel recipe with agar and citric acid. After setting the hydrogel for about 18 hours, she submerged the hydrogel in water, but it absorbed hardly any water. The weight of 25 g hydrogel went up by only about 4 gms after an hour. Is this within the expected range? [Administrator note https://www.sciencebuddies.org/science-fair-projects/project_ideas/AgTech_p013/agricultural-technology/water-conservation-hydrogels ] Read more

Multimeter sport drink question

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

Multimeter sport drink question Multimeter sport drink question Hello I am doing my own of the sport drink and orange juice experiment, seeing how much electricity is in each sport drink. I am using electrolyte tablets and diluting them with water and then measuring the electricity. I followed step by step your procedures but when I put the straw in the solution my multimeter still shows 00.0. idk what to do and I've tried so many times to fix little things and it is still not working Re:… Read more

Question about How Do Arctic Animals Stay Warm? activity

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

Question about How Do Arctic Animals Stay Warm? activity Question about How Do Arctic Animals Stay Warm? activity I need a more cost effective suggestion to use in place of butter. Hair gel from the dollar store? I intend to do this with multiple classes of kiddos and cannot fathom the cost and waste of 50 groups worth of butter. ------------------------------------- Leave this to help the Experts: The activity can be viewed at:… Read more

science fair project: Bouncing Basketballs: How Much Energy Does Dribbling Take?

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

science fair project: Bouncing Basketballs: How Much Energy Does Dribbling Take? science fair project: Bouncing Basketballs: How Much Energy Does Dribbling Take? my question is that if instead of a basketball i use a ping pong ball please answer asap because i have a project :D Re: science fair project: Bouncing Basketballs: How Much Energy Does Dribbling Take? You can do this project with any type of ball! The same concepts apply, but the results for each ball may be different. Re:… Read more

cress seed orientation in microgravity project

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

cress seed orientation in microgravity project cress seed orientation in microgravity project The directions say "The micropyle on each seed should point downward, in the direction of the arrow." Does this mean the micropyle is "down" as in parallel to the arrow, or literally pointing towards the arrow (so the seeds on the sides are at an angle)? Or perhaps it means "down" as pointing to the base of the petri plate when it is sitting flat on the table? Thanks for clarifying this. Re:… Read more

Making Marshmallows

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

Making Marshmallows Making Marshmallows I’m having a hard time understanding what my independent and dependent variables would be. Would the independent variables be the ratio of corn syrup to sugar? Re: Making Marshmallows Hello, Are you following this STEM Activity Guide? If so, it is not intended to be an experiment with independent and dependent variables. https://www.sciencebuddies.org/stem-activities/make-marshmallows Or are you following this Science Project Guide? For this project… Read more

Help with a catchy yet informative science fair project title

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

Help with a catchy yet informative science fair project title Help with a catchy yet informative science fair project title Hello! My son did an engineering project for science fair this year. He created dams out of rock, soil, sand, and clay inside of a large, clear slightly tilted container to test the permeability of each material. He wanted to see which dam material would hold back the most water in a flood situation. He timed and measured the amount of water for each material. He wanted… Read more

netCDF extractor for Mac

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

netCDF extractor for Mac netCDF extractor for Mac Hi, The project I'm working on requires me to analyze data in netCDF form. I've been trying to find a free netCDF extractor that works on a Mac, but haven't had any luck. I was wondering if anyone could help me find a netCDF extractor that works, or if there are any student versions I can download for free? Thanks! Re: netCDF extractor for Mac Here's info about panoply: https://www.giss.nasa.gov/tools/panoply/ Does that work for what you… Read more

Iron-Rich Foods - Oat Flour Problem

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

Iron-Rich Foods - Oat Flour Problem Iron-Rich Foods - Oat Flour Problem [i]Posting on behalf of a student. The student used oat flour instead of almond flour and is having trouble. [/i] "I am currently doing the experiment how to get most out of iron rich foods. I used oat flour instead of almond flour and I am at the stage in the experiment where I compare the solutions to the iron color chart and the solutions are not changing color at all. [b]They are all light brown and have a huge… Read more

Re: Specific Heat Capacity Question

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

Re: Specific Heat Capacity Question Re: Specific Heat Capacity Question (Sorry, didn't read the guidelines as well as I thought! Updating this post with proper grammar.) Hey! This is probably not that great of a question, but I'm unsure where else to ask - I'd ask my teacher, but we're in the midst of winter break right now. In this ScienceBuddies project, the q=mCpΔt equation has Cp as specific heat capacity, which the project states is .001 when converting to kCal. However, in class and… Read more

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