Ask an Expert (Page 155)

Question about Make Ice Cream in a Bag activity

Ask an Expert Topic Forum: STEM Activities

Question about Make Ice Cream in a Bag activity Question about Make Ice Cream in a Bag activity Can you use Almond Milk for this activity? I have a few students that cannot have dairy products. ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/ice-cream-bag]Make Ice Cream in a Bag[/url] Re: Question about Make Ice Cream in a Bag activity Yes! You can use almond milk to make ice cream… Read more

Step Site versus Terrace Site on a metal catalyst

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

Step Site versus Terrace Site on a metal catalyst Step Site versus Terrace Site on a metal catalyst Hello, I have searched for definitions, differences, etc. but can't find any information. I am reading a journal article, and step sites and terrace sites are often discussed when learning about catalysts, but I don't know the difference. I need to know. Any help would be appreciated. Read more

Can you suggest one?

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

Can you suggest one? Can you suggest one? [Removed.] Re: Can you suggest one? [Removed.] Read more

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

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