Ask an Expert (Page 2)

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

Question about Build a Paper Roller Coaster activity

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

Question about Build a Paper Roller Coaster activity Question about Build a Paper Roller Coaster activity Type your question below and then press Submit! So what specific forces should students be able to identify in their final roller coaster project? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/paper-roller-coaster]Build a Paper Roller Coaster[/url] Re: Question about Build a… Read more

Question about DIY Mini Propeller Car activity

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

Question about DIY Mini Propeller Car activity Question about DIY Mini Propeller Car activity My GT Students are making the Propeller Car. However, when completing the project the car does not move at all. This has happened multiple times. We've used the same supplies that were in the demonstration video and followed all directions. The motors work and the propellers spin, so the connection is not the issue. It just doesn't move the car. ------------------------------------- Leave this… Read more

Graphing help!!!

Ask an Expert Topic Forum: Grades 6-8: Math and Computer Science

Graphing help!!! Graphing help!!! Hello!! I'm very new to Science Buddies and am doing my first ever science fair. My project is due 4/10/26 but the date of the science fair is later. This is my first time posting on here so I'm sorry if I'm doing anything wrong. I'm doing a project from this website called "Movie Music" (I'll leave the link down below) and I'm confused on how to graph my data. I used the table shown on the page to track my information and I'm hoping to use a bar graph to… Read more

Is this homopolar motor real ?

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

Is this homopolar motor real ? Is this homopolar motor real ? Hello , Is it convenient to ask about : The motor from the following link : https://youtu.be/rl9hXn2fseU?t=62 The motor from 1:08 (1 minute 08 seconds) The motor, that rotates together with attached wire in one direction. The motor where all parts are firmly attached. Is it real ? https://youtu.be/rl9hXn2fseU?t=62 Similar design here… Read more

Question about Build a Balloon Car activity

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

Question about Build a Balloon Car activity Question about Build a Balloon Car activity Type your question below and then press Submit! what are the sides of the car like the grapt cause i need it ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/balloon-car]Build a Balloon Car[/url] Re: Question about Build a Balloon Car activity Hello, Can you elaborate on your question a little… Read more

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