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Acid Rain and soil PH

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

Acid Rain and soil PH Acid Rain and soil PH im doing an expirement about how the change in soil pH due to acid rain will affect plants. i planned to grow 3 indivual pots of wheatgrass in the span of 2 weeks and water each one with a different spray bottle. One was filled distilled water to have a neutral pH so it can stimulate normal gorwth. The two others i used the same distilled water but added a small amount of vinegar so i could get a pH of 3 and 4. however when i measured the regular… Read more

Help needed for a Programmable Probiotic using E. coli Nissle 1917 as a cancer-targeting vector

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

Help needed for a Programmable Probiotic using E. coli Nissle 1917 as a cancer-targeting vector Help needed for a Programmable Probiotic using E. coli Nissle 1917 as a cancer-targeting vector Hi! My name is Alia and I'm a 12-year-old Grade 5 student from Dhaka, Bangladesh. I've been developing a theoretical concept for a Programmable Probiotic using E. coli Nissle 1917 as a cancer-targeting vector. I call her Karen 1917 (Singular: A Karen 1917, Plural: Karens 1917). I have a question for… Read more

Egg drop challenge questions

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

Egg drop challenge questions Egg drop challenge questions I am doing the Great Egg Drop Challenge in my Physical Science class right now and I have a plan for it that I am unsure about. I haven't started to make the project myself yet but here is my plan, I am wrapping the egg into cotton then making a straw cage to keep it secure, and I will get a small box to put soft food into it for extra protection. The materials I have for it is the small box, soft food, cotton, and the egg. How can I… Read more

help with skyglow project

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

help with skyglow project help with skyglow project Hi! I need help with understanding the way skyglow is measured in this project for my conclusion. I completed the rest of the experiment (taking all the photos, calibration curve, finding the EET) and I'm trying to understand what is going on with Figure 4. Basically, I have the EETs and I can see that in some places the EET is up to 70x more than in the darkest place. So, for my conclusion, am I just measuring the skyglow relative from one… Read more

Question about Build a Paper Speaker activity

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

Question about Build a Paper Speaker activity Question about Build a Paper Speaker activity So what happened exactly? I think it was a short circuit but I’m unsure. I was making the paper speaker and using the hot glue gun to add some glue to the wire that was wrapped around the magnet. The metal part at the tip of the hot glue gun touched the wire or possibly the magnet and then there was a bright flash / small fireball, a loud bang and suddenly my hot glue gun is blackened and there is a… Read more

Why does the sky change Colors

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

Why does the sky change Colors Why does the sky change Colors I have been wanting to know this for a while, I'm doing a Wikipedia page on why the sky changes colors, and I realized I don't have a answer myself, so please, why does the sky really change colors? + :?: Re: Why does the sky change Colors Hi, That's a great question, you might already know that the sky appears blue because air molecules in our atmosphere scatter the light that comes from the sun. Blue light has a shorter… Read more

Extracting pesticide residual levels from plants

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

Extracting pesticide residual levels from plants Extracting pesticide residual levels from plants Would anyone have any idea on how I could measure/test pesticide residual levels on plants, mainly fruits and vegetables and what methods I can use for this? Mainly about systemic pesticides that travel inside the cell. Re: Extracting pesticide residual levels from plants Hi, Sounds interesting, testing for systemic pesticides would generally use professional analytical chemistry… Read more

Question about Build a Pizza Box Solar Oven activity

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

Question about Build a Pizza Box Solar Oven activity Question about Build a Pizza Box Solar Oven activity Type your question below and then press Submit! What is the science behind this. ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/solar-oven]Build a Pizza Box Solar Oven[/url] Re: Question about Build a Pizza Box Solar Oven activity Hi there, The science behind this project is… Read more

my haptic gloves is not working

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

my haptic gloves is not working my haptic gloves is not working Every time I plug in my Arduino, even when I have reset the code, my motors randomly start buzzing, and even if I upload new code, nothing changes Moderator note: https://www.sciencebuddies.org/science-fair-projects/project-ideas/VirtualReality_p007/virtual-reality/arduino-VR-haptic-glove https://www.sciencebuddies.org/science-fair-projects/references/how-to-use-an-arduino Re: my haptic gloves is not working I fixed it, my… Read more

Code for the arduino haptic glove

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

Code for the arduino haptic glove Code for the arduino haptic glove I am a student trying to build the haptic glove and out of everyone in my family I am the most knowledgeable when it comes to code however i am not very good at it so i am wondering if you could walk me through how to make the code work with only one motor Moderator note: … Read more

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