Ask an Expert (Page 149)

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

Question about Paper Ball Run Scores Question about Paper Ball Run Scores I understand the equation used to score the paper ball run, but how do you know which ball run is the best? Is it the highest or lowest score? Thank you, D. Bowen Re: Question about Paper Ball Run Scores Hi - for this contest a higher score is better. Your score increases when the ball run takes longer and you use less paper. Read more

Math Fair Topic: Cereal Box Volume

Ask an Expert Topic Forum: Grades K-5: Math and Computer Science

Math Fair Topic: Cereal Box Volume Math Fair Topic: Cereal Box Volume Is this experiment logical? Geometry of Cereal Boxes The goal is to evaluate the dimensions of various sized cereal boxes in order to determine which brand has the most cereal in the least amount of packaging or surface area. Hypothesis: If one cereal box has a larger surface area than another, it should contain more cereal.… Read more

Solar Powered Water Desalination

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

Solar Powered Water Desalination Solar Powered Water Desalination Instead of an 800 mL tri-pour beaker could I use a measuring cup for the project (link below). https://www.sciencebuddies.org/science-fair-projects/project-ideas/EnvEng_p022/environmental-engineering/solar-powered-water-desalination Re: Solar Powered Water Desalination Hello, This sounds like a fun project! Yes, you could also use a measuring cup to make the saltwater instead of the 800ml tripour beaker. Good luck! Audrey Read more

Earth equator

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

Earth equator Earth equator How much mass would have to be relocated to the earths equator in order to speed up the rotation of the earth enough to knock it off its axes and could all the pyramids that are lined up around the planet be the old equatorial line??? Re: Earth equator Are you working on a student science project? These forums are for questions related to K-12 student science projects. Amy Science Buddies Read more

Dog toilet

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

Dog toilet Dog toilet My 7-year old daughter wants to know if it is possible to make an indoor toilet on the floor that she could train a dog to use so that we don’t have to go outside or pick up after our dog. Re: Dog toilet With training, you could train your dog to use an indoor solution. (You and your daughter should do research to determine if this is appropriate for your dog's breed.) Many dogs are trained to use "pee pads." Some dogs are trained to use a litter box, similar to the… Read more

Wind Tunnel

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

Wind Tunnel Wind Tunnel When I compared my calculated total pressure (measured static pressure + measured velocity pressure), I got a slightly different answer to my measured total pressure and was wondering why there is this difference? Read more

Test

Ask an Expert Topic Forum: Careers in Science

Test Test This is a post for testing purposes Read more

Test

Ask an Expert Topic Forum: Careers in Science

Test Test This is a test for volunteering! Read more

Remineralizaion of teeth with tissue salts

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

Remineralizaion of teeth Remineralizaion of teeth with tissue salts Goodday, I am a Grade 9 student at Tsumeb Gymnasium in Namibia. Currently I am busy with a study to try and remineralize teeth after i have demineralized it with different drinks (Cola, Apple juice, Energade etc.) I have finished the first phase of this study. I have tried to remineralize the teeth with common household chemicals - Distilled water (control), Sodium bicarbonate, Magnesium sulphate, Calsium hydroxide and… Read more

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