Ask an Expert (Page 132)

Aerodynamics of Air Hockey question Urgent

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

Aerodynamics of Air Hockey question Urgent Aerodynamics of Air Hockey question Urgent Dear moderators, I need help finding this site but without the asterisk:arrow: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Aero_p024/aerodynamics-hydrodynamics/aerodynamics-of-air-hockey The problem is that I would like the site without this asterisk. I have tried for a long time to find this site but sadly with no luck. My question is: Can you please send me this link above but… Read more

Dealing with Diabetes, Trouble with Exporting Data

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

Dealing with Diabetes, Trouble with Exporting Data Dealing with Diabetes, Trouble with Exporting Data Hello! I am doing the project Dealing with Diabetes for a science fair and have successfully set up the arduino and breadboard (I think). I have had a few fails but my latest trial was successful (the pump stopped when it reached the correct threshold), but I am having trouble exporting my data out of the Arduino IDE app on my Macbook. After installing a program I found on google, and having… Read more

Antibiotic resistance

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

Antibiotic resistance Antibiotic resistance I'm planning on doing a project that involves growing bacteria and measuring how many bacteria out of that sample have developed resistance to certain antibiotics. However, I was wondering where you can find antibiotics to test this out and the experimental process. Could you help me? Re: Antibiotic resistance Hello! This sounds like a really cool project! We'd be happy to help you plan it out. First off, what question are you trying to test with… Read more

Winter/Summer Sun Angle

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

Winter/Summer Sun Angle Winter/Summer Sun Angle I know the sun angle, the earths tilt, causes summer and winter. Is this because of the distance the light has to travel in the atmosphere with a greater angle? If yes, what the difference in atmosphere distance between summer and winter? Re: Winter/Summer Sun Angle Hi - this forum is intended for K-12 students working on science projects. If your question is related to a student science project, please provide more details and we may be able… Read more

The Skinny on Moisturizers -jello flavour/colour

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

The Skinny on Moisturizers -jello flavour/colour The Skinny on Moisturizers -jello flavour/colour Hi there! For my science fair project I am doing the skinny on moisturizers. I suggest reading the experiment before answering this. Anyways, for the jello, they use the green lime flavouring. I was wondering if I could use any flavour or colour for the jello. Also, my science teacher told me to put my jello/moisturizer samples at a room temperature room with the lid of the Petri dish open. How… Read more

nice discussion

Ask an Expert Topic Forum: STEM Activities

nice discussion nice discussion With the choice of the front door, I need to choose where to order it and which door will suit me better, so glass paneled exterior doors https://unitedporte.us/entry-doors/with-glass is what I prefer. Good design and excellent quality, not to mention the best price, so I chose one for me on this website. Read more

Eyewitness reliability- what's the control group

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

Eyewitness reliability- what's the control group Eyewitness reliability- what's the control group I have to turn in the basic summary with the control group and experimental group on my project today and I can't figure out which group is which. Read more

Going Green as You Clean: Are 'Green' Detergents Less Toxic Than Conventional Detergents?

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

Going Green as You Clean: Are 'Green' Detergents Less Toxic Than Conventional Detergents? Going Green as You Clean: Are 'Green' Detergents Less Toxic Than Conventional Detergents? This experiment tells us to use worms, is it possible for us to switch out the worms for stained clothes? Re: Going Green as You Clean: Are 'Green' Detergents Less Toxic Than Conventional Detergents? Hello! I'm sorry for the late response. The purpose of using the worms is to test whether or not the "green"… Read more

Compensating gear for engaging and disengage idler gear to output gear

Ask an Expert Topic Forum: STEM Activities

Compensating gear for engaging and disengage idler gear to output gear Compensating gear for engaging and disengage idler gear to output gear Hi, I am building a conveyer lift to send cut plywood (4ft x 8ft x 40mm) into a 20-tier conveyor rack. I like my conveyer motor to be on the conveyer lift only. I need the motor to drive the lift conveyer belt and the rack conveyer belt when it stops on that level. Please point me to the right mechanism or gear to use. I prefer fully mechanical than… Read more

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