Ask an Expert (Page 11)

The Build your own gel electrophoresis chamber science experiment

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

The Build your own gel electrophoresis chamber science experiment The Build your own gel electrophoresis chamber science experiment I have now attempted this experiment twice, the first time, the box put it in was a little big and was a failure on my part. The second time I did it with a normal size soap box, but both times, a weird cloudy film would come over top of the box and would kind of bubble so I couldn't see the colors. Now I have two things that I think it might be. 1: In the… Read more

Aerodynamic problems!!!

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

Aerodynamic problems!!! Aerodynamic problems!!! Hi!! This might be my last year doing the science fair! Before I state my problem, I would like to express my gratitude to Science Buddies for their assistance every year. Really appreciate it! Anyway, I have a problem. I am doing the Frisbee Aerodynamics project, and it states I have to do two of positive, and two of negative, and I have to do them each 10 times. Am I supposed to have 50+ trials? If not, how many am I supposed to have in total?… Read more

Arduino hot glue question

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

Arduino hot glue question Arduino hot glue question Can I use hot glue with Arduino components, and then take it off again, or is it permanent? ( for example, to attach a homemade wheel to a motor. ) :?: :?: :? -Seabass Re: Arduino hot glue question Hi - yes, it's generally safe to use hot glue with electronic components. If you use a lot it may be messy or more difficult to peel off, but it's not going to hurt anything. Re: Arduino hot glue question Thank you, because a lot of… Read more

Trouble with BlueBot

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

Trouble with BlueBot Trouble with BlueBot Posted on behalf of student Project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Robotics_p028/robotics/obstacle-avoiding-robot ----------------------------------------------------- I built the robot and worked but it is not walking forward instead it is turning around itself [attachment=2]IMG_6155.jpeg[/attachment][attachment=1]IMG_6156.jpeg[/attachment][attachment=0]IMG_6157.jpeg[/attachment] Re: Trouble with BlueBot So… Read more

this is my new account

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

this is my new account this is my new account :D Read more

Ultrasonic haptics trouble

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

Ultrasonic haptics trouble Ultrasonic haptics trouble Hello, I have created the project on ultrasonic haptics and have tested over ten people with it; however, I believe there is an issue that arose a couple of days ago that the sensations was suddenly gone. I had gone back to the people I tested to get the input on the feeling and said they barely felt it or nothing was felt at all... Everything seems to be working and you can even hear the high pitched sound, but the sensation is gone and I… Read more

Does changing the movement of water affect the shade (color) of the water?

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

Does changing the movement of water affect the shade (color) of the water? Does changing the movement of water affect the shade (color) of the water? Does changing the movement of water affect the shade (color) of the water? I do not know Re: Does changing the movement of water affect the shade (color) of the water? Hi! Yes, changing how water moves can affect how it looks. When water is still, it looks clearer and darker because light goes straight through. When water is moving or choppy,… Read more

can you give me testable ideas for science fair?

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

can you give me testable ideas for science fair? can you give me testable ideas for science fair? I do not know what to do. :cry: Re: can you give me testable ideas for science fair? Hello, You might want to try out our Project Selection Wizard (https://www.sciencebuddies.org/science-fair-projects/topic-selection-wizard/background-info) or scan through some of the many project guides (https://www.sciencebuddies.org/science-fair-projects/science-projects/high-school) to get some ideas on… Read more

Does the type of liquid affect how fast an ice cube melts?

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

Does the type of liquid affect how fast an ice cube melts? Does the type of liquid affect how fast an ice cube melts? What type of liquid makes a ice cube melt faster? Re: Does the type of liquid affect how fast an ice cube melts? Hi! An ice cube melts fastest in a liquid that can give it heat quickly or make it less stable. Warm water melts ice the fastest because it has more heat energy to transfer into the ice. If all the liquids are the same temperature, salt water usually melts ice… Read more

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