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

Disinfectant / Bacteria project problem Disinfectant / Bacteria project problem Posted on behalf of student ------------------------------------------ I am using the bacteria growing kit and was doing the disinfectants experiment. (https://www.sciencebuddies.org/science-fair-projects/project-ideas/MicroBio_p012/microbiology/how-well-do-disinfectants-work) I used plastic cups as my fomite (rather than the cutting board) and used water as my control group. I have the plates on cookie sheet… Read more

Science Buddies Build a Simple Drone and Test How Much It Can Lift

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

Science Buddies Build a Simple Drone and Test How Much It Can Lift Science Buddies Build a Simple Drone and Test How Much It Can Lift My 10-year-old son is working on a science fair project from Science Buddies called "Build a Simple Drone and Test How Much It Can Lift." We purchased the drone kit (made of popsicle sticks) from Home Science Tools. We followed the directions precisely. We got all the propellers to spin in the correct direction. It is still too heavy to lift. We tried… Read more

Question about Generate Electricity with a Lemon Battery activity

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

Question about Generate Electricity with a Lemon Battery activity Question about Generate Electricity with a Lemon Battery activity On the lemon energy experiment is there a way that I can measure that amount of electricity and then compare it with the electricity from other fruits and vegetables? Or just something I could measure. ------------------------------------- Leave this to help the Experts: The activity can be viewed at:… Read more

Orange v Sports Drink Resistor

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

Orange v Sports Drink Resistor Orange v Sports Drink Resistor Materials state that there is a resistor required, but it is not in the procedure. Where does the resistor fit into the procedure. I am not getting a good reading and have secured and tried every other trouble shooting trick. Thank you Re: Orange v Sports Drink Resistor Hi - The resistor is included in the kit. It is not used in the procedure. It is used for troubleshooting - if you think you have blown a fuse. There are… Read more

Question about Exploring Enzymes activity

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

Question about Exploring Enzymes activity Question about Exploring Enzymes activity For the enzyme lab where we can add the enzymes found in yeast into hydrogen peroxide, in the explore further section, if we wanted to know how environment affects the reaction and wanted to change either pH or temperature, do we change the environment of the hydrogen peroxide and soap solution or the enzyme solution? Please answer as fast as possible its for a School assignment. Thank you very… Read more

Science fair

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

Science fair Science fair My sons doing a science fair project showing soda and diet soda which float and sinks .. what would you write for the purpose? Read more

Iodine 1% in a project that calls for 2% Lugol's Iodine Solution

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

Iodine 1% in a project that calls for 2% Lugol's Iodine Solution Iodine 1% in a project that calls for 2% Lugol's Iodine Solution (Posted on behalf of an international student who can't access the iodine solution called for in the project.) -- Can they use what they have locally, which is 1% iodine, for the experiment. Will this work for this project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/Chem_p044/chemistry/which-orange-juice-has-the-most-vitamin-c [b]The… Read more

Help on CC motor and arduino H bridge programing elevator circuit

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

Help on CC motor and arduino H bridge programing elevator circuit Help on CC motor and arduino H bridge programing elevator circuit i have an elevator circuit that tells me what floor im on after pressing a button but the voltage isnt enough to activate the motor for the going up and down part of the elevator and i need help to get this to work in zync with the buttons pulses in order to work properly Re: Help on CC motor and arduino H bridge programing elevator circuit Hi, You may want to… Read more

Question about Make a Lemon Volcano activity

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

Question about Make a Lemon Volcano activity Question about Make a Lemon Volcano activity Type your question below and then press Submit! -are lemon volcanoes edible after you use them? Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/make-lemon-volcano]Make a Lemon Volcano[/url] Re: Question about Make a Lemon Volcano activity Hello, I would not recommend eating the lemon volcanoes. However, they are edible. I hope… Read more

Raspberry pi electric piano with light

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

Raspberry pi electric piano with light Raspberry pi electric piano with light I am doing this raspberry pi project electric piano with lights. I bought raspberry pi 4 model from Amazon as it is not available on science buddies. Can somebody help me in setting up the circuit with gpio pins so I can work on scratch and get the leds light up. TIA [Administrator note: https://www.sciencebuddies.org/science-fair-projects/project-ideas/CompSci_p053/computer-science/electronic-piano-raspberry-pi … Read more

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