Ask an Expert (Page 97)

Experiment for choosing a bike gear for uphill

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

Experiment for choosing a bike gear for uphill Experiment for choosing a bike gear for uphill My homeschooled 7th-grade son is doing a science fair project on choosing the best gear to go uphill. After our research, he understands how gear ratio works, how to determine gear ratio, why we need a low gear ratio for uphill and how more force/torque is created on the gear/wheel; thus he is able to make a very good educated hypothesis. However, we are having a hard time determining a way to use an… Read more

Title help

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

Title help Title help help i need a a catchy title for my science fair project Hypothesis: If tape is used in frigid climates it will not stick as well. Topic duct tape used in different climates Re: Title help Hello, This sounds like a fun project! A few project titles come to mind: "Chilly Closure: how does temperature affect tape performance?" or "Temperature and Tape: how does temperature affect tape performance?" Audrey Re: Title help thank you! Read more

Question about Imagine Ways that Artificial Intelligence Could Change the World activity

Ask an Expert Topic Forum: STEM Activities

Question about Imagine Ways that Artificial Intelligence Could Change the World activity Question about Imagine Ways that Artificial Intelligence Could Change the World activity Type your question below and then press Submit! How much water do you use? Conserving water can do more than save your parents' money, it can also save freshwater ecosystems, wetlands, and watersheds. Some companies are trying to help fix the problem by making low flow faucets and showerheads. How well do they work?… Read more

Question about Imagine Ways that Artificial Intelligence Could Change the World activity

Ask an Expert Topic Forum: STEM Activities

Question about Imagine Ways that Artificial Intelligence Could Change the World activity Question about Imagine Ways that Artificial Intelligence Could Change the World activity Type your question below and then press Submit! how does banana shake gains weight ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/imagine-artificial-intelligence]Imagine Ways that Artificial Intelligence… Read more

Photochemical reactions. Please help project due 9/14

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

Photochemical reactions. Please help project due 9/14 Photochemical reactions. Please help project due 9/14 HI, I am doing the black to clear with photochemistry project, and the solution is not changing color under the light and I am looking for possible answers. I am using tap water instead of distilled water. I am trying to get the solution to change from the iodine color to clear under light and depending on the amount of time under light the more clear the solution will get. It has so… Read more

Bouncing balls

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

Bouncing balls Bouncing balls My son chose the “bouncing balls” experiment for science fair and is now commited to it. The problem is since it’s not a full outlines experiment we’re having a difficult time finding an actual experiment to do and exactly what our variables should be. Any thoughts? Or a direction in a better outlined experiment that could fit into this topic? Re: Bouncing balls Can you provide the link to the exact project you're looking at on our site? I'm guessing it's one… Read more

Quantifying Algae Growth

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

Quantifying Algae Growth Quantifying Algae Growth Admin note: posting on behalf of a parent/student looking at this project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/EnvSci_p054/environmental-science/effect-of-fertilizers-on-algal-growth (See section on observing the growth of the algae) "I will be assisting my daughter [in performing] your experiment referenced above on Algae growth. After reviewing the procedures developed by your team, I have the following… Read more

cold fusion

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

cold fusion cold fusion i figured out how cold fusion can be possible i just need help expressing the project to the science community pls email me @[email protected] :D Read more

Science fair question: comparing activators

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

Science fair question: comparing activators Science fair question: comparing activators Hello, my daughter wants to see how using three different activators (borax, liquid starch, and contact lens solution) affect the viscosity of the slime. We used the sciencebuddies experiment with contact lens solution as a starting point. We may have an issue now because I was thing that the activator was the lone item changing each time, however now I see that contact lens solution also requires baking… Read more

Can I test density for magnetic slime? Need guidance with slime variation for son's science fair experiment

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

Can I test density for magnetic slime? Need guidance with slime variation for son's science fair experiment Can I test density for magnetic slime? Need guidance with slime variation for son's science fair experiment My 7th grade son and I are looking to do the variation on the slime experiment using magnetic slime but instead of observing qualitative results (is it stick? slimy? etc?), we are wanting to test the density. Does that make sense or is it a smart thing to test? Also, how could… Read more

Ask an Expert (top 2,000 results)

Explore Our Science Videos