Ask an Expert (Page 156)

Tracking Geomagnetic Storms in the Ionosphere

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

Tracking Geomagnetic Storms in the Ionosphere Tracking Geomagnetic Storms in the Ionosphere Do I need to purchase a WAAS-capable GPS receiver or is there a place where I can rent one? Re: Tracking Geomagnetic Storms in the Ionosphere Hi - if you google "rent gps waas receiver" it looks like there are several websites where you can rent one and they will ship it to you. I checked to see if you could just do this project using a smartphone but it looks like phones are not WAAS-enabled. Hope… Read more

commissioned an essay

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

commissioned an essay commissioned an essay [Removed] Re: commissioned an essay [Removed] Read more

Good sample size for Isef

Ask an Expert Topic Forum: Preparing for the Competition

Good sample size for Isef Good sample size for Isef I was at a state competition recently and one of the judge’s made a comment that my sample size was too small. I’m using CT scans for my project. My sample size is 1400 and he commented that even a sample size of 10,000 would be too small. It was extremely difficult to get access to the scans in the first place. I’m nervous that when I compete at ISEF later this month I may receive the same comment. I thought that having a sample size of… Read more

Light tracking bluebot project

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

Light tracking bluebot project Light tracking bluebot project Hello everyone. I am just starting to build the light tracking bluebot project(not the bristle not) and I need to gather all the materials required. It would be really helpful if someone would tell me the specifications of everything used i-e which type of MOSFET, or potentiometer, or diodes etc are used. My project us due and I really need help. I'll be very thankful if anyone could help me out. Thank you! Re: Light tracking… Read more

Science Fair Project Help

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

Science Fair Project Help Science Fair Project Help I am making a simple science fair project by measuring the amount of bacteria using cotton swabs and rubbed them on the petri dish. I have a couple questions for the experiment: [list]1. Is "Covered in Bacteria" a good title? 2. Is a good question "Do places that have been touched by a lot of people have more bacteria?" 3. Is a good hypothesis "If objects are touched more often then they will contain more bacteria because bacteria can… Read more

Question about How Does a Hovercraft Hover? activity

Ask an Expert Topic Forum: STEM Activities

Question about How Does a Hovercraft Hover? activity Question about How Does a Hovercraft Hover? activity Type your question below and then press Submit! Can you use a pop up lid from a dish soap bottle? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/hovercraft]How Does a Hovercraft Hover?[/url] Re: Question about How Does a Hovercraft Hover? activity Hi - as long as the lid you are… Read more

Question about Build a River Model! activity

Ask an Expert Topic Forum: STEM Activities

Question about Build a River Model! activity Question about Build a River Model! activity Type your question below and then press Submit! What are the main processes that happen in the river like erossion? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/build-river-model]Build a River Model![/url] Re: Question about Build a River Model! activity Hi - This activity is one in which… Read more

ISEF Trifold Display

Ask an Expert Topic Forum: Preparing for the Competition

ISEF Trifold Display ISEF Trifold Display I'm going to ISEF for the first time, so I'm sorry if this seems like a stupid question. What is the most common tri-fold display size? I've read the guidelines and found the maximum allowed per ISEF rules and I know that there can be a lot of variation, but generally what is the most common board size? Thank you! Re: ISEF Trifold Display Congratulations on going to ISEF! That is such a great achievement! Be sure to follow the ISEF 2022… Read more

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