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How Does Color Affect The Heating of Surfaces

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

How Does Color Affect The Heating of Surfaces How Does Color Affect The Heating of Surfaces If I were to have a specific color how would I figure out the wavelength of that in nanometers? Read more

Invertebrate

Ask an Expert Topic Forum: Grades K-5: Life, Earth, and Social Sciences

Invertebrate Invertebrate When I had an invertebrate animals topic, one of my students asked why did they name 'Sea Jellies' if they live in the ocean. Maybe anyone can help? Re: Invertebrate Hi! That’s a very interesting question! It’s nice to hear that your students are so curious! I did a bit of research and found a lot of information about sea jellies, but I didn’t find a clear answer to this question, although I did find some facts that might be helpful. Sea jellies can also be… Read more

Trouble Shooting Obstacle-avoiding robot

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

Trouble Shooting Obstacle-avoiding robot Trouble Shooting Obstacle-avoiding robot Hi there, I have assembled an obstacle avoiding robot using the circuit instructions from Science buddies, but what happens is that if I press on a lever, the opposite wheel does not move backward. only forward (the wheel on the same side of the lever stops). Could you tell me what is going on, as I haven't seen this kind of situation appear in the FAQ section on the page. Thank you very much. Re: Trouble… Read more

Question about Warm in the Sun activity

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

Question about Warm in the Sun activity Question about Warm in the Sun activity What type of wire should I use for this activity? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/warm-in-sun]Warm in the Sun[/url] Re: Question about Warm in the Sun activity Hello, This sounds like a fun activity! You can use any type of wire for this activity, or even a piece of string. The purpose… Read more

What would this be classified as?

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

What would this be classified as? What would this be classified as? For my science project this year, I was thinking about testing which starch from potatoes or arrowroot or tapioca would be the thickest of the three, as well as coming up with another experiment in addition to the previously mentioned experiment. (Will have to think on that later.) However, to fill out my science topic selection worksheet (which is due on Tuesday; so I would prefer to receive an answer before then please),… Read more

A Cool Way to Make Electricity: Solar Cell Power Output vs. Temperature

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

A Cool Way to Make Electricity: Solar Cell Power Output vs. Temperature A Cool Way to Make Electricity: Solar Cell Power Output vs. Temperature This project calls for a: [list][/list]6 V, 150 mA solar cell with alligator clip leads, part #2221456 Yet, the link takes you to: [list][/list]7.2 Volts 200mA Solar Panel with 20" Alligator Clip Leads (Jameco Part no.: 2221456) Does it make a difference for this project? My guess is that more current would help for a better reading on the… Read more

Echo underground

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

Echo underground Echo underground Hi Does anyone know whether the same structure (say a concrete 50㎥ room) over ground, would have more intense echo had it been under ground? If not what causes it? And how severe is the difference? thanks! Re: Echo underground I know this question is old, but I thought it was interesting. The amount a sound echoes depends on how much the material absorbs sound. So if you were to have a solid metal box, it would probably echo the same above and below… Read more

Question about Paper Ball Run Scores

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

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