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Room heater project window selection guidance

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

Room heater project window selection guidance Room heater project window selection guidance Hi. We will be performing the Cold Room, make a heater project in Puerto Rico. Our question is why the selected window must be facing south? Does the sunlight must hit directly the window? Which alternative for the guesso paint can be used? Re: Room heater project window selection guidance Greetings! Because the sun rises in the East and sets in the West, the location of windows can play a very… Read more

Planetary nebulae

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

Planetary nebulae Planetary nebulae Hi, What are some examples of interrelated physical characteristics of planetary nebulae that can be easily calculated? Read more

A good ratio of salt to water in a saltwater battery

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

A good ratio of salt to water in a saltwater battery A good ratio of salt to water in a saltwater battery I'm doing an experiment about what types of salt would be most conductive in different temperatures. I need to know about the best ratio of salt to water for a battery so as to not mess with the rest of the experiment. (ex. 1 cup of water and 1 tablespoon of salt) Thanks. Read more

Help with catchy science fair title

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

Help with catchy science fair title Help with catchy science fair title My son is doing a bacteria science fair project. He is swabbing 5 different surfaces in the home to see what has the most bacteria (trash can drawer handle, toilet flush handle, front door knob, cell phone, video game controller). Please help us come up with something. Re: Help with catchy science fair title Hi! This sounds like a cool experiment! Here are a few ideas: - Surface to Surface: Where Bacteria Really… Read more

Urgent! Bouncy ball with salt, glue and liquid starch only

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

Urgent! Bouncy ball with salt, glue and liquid starch only Urgent! Bouncy ball with salt, glue and liquid starch only Urgent please help! I am a Parent in need of how to answer how to make a bouncy ball using only 3 ingredients (no water, no borax etc..) just white glue, Sta Flo liquid laundry starch and salt. I gave done extensive research on polymerization, cross linking, etc. but I can’t find a recipe / technique that will work with only these ingredients. What is chemistry behind the… Read more

Cheesecake Project and choosing one variable that changes

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

Cheesecake Project and choosing one variable that changes Cheesecake Project and choosing one variable that changes Hi, My son is wanting to do his science project on the 3 cheesecake methods and which method allows the cheesecake to rise higher with the least amount of cracks for his project this year. However, according to our guidelines only one variable can change throughout the project. Are the 3 methods considered the one variable we are changing? Since each method requires different… Read more

Soil salinity materials

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

Soil salinity materials Soil salinity materials I am doing my project on testing retention of salinity in salt after watering with different concentrations of salt water. I wanted to use arid soil as salinity is an agricultural problem in arid regions. However, I went to my local nursery and could not find any. Can you advise on where to purchase arid soil? Also, I will drain water and different depths of my planter and then use an electric conductivity probe to measure salinity. Would the… Read more

Question

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

Question Question Hi I'm doing a science project I found in science buddies called "the fluffiest muffins: Flour type and muffin density." I am using wheat flour, Almond flour and all purpose flour in a recipe that I can control the ingredients, but is it better to measure batter by volume or weight when I put it into the pan? [Administrator note: Project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/FoodSci_p080/cooking-food-science/fluffiest-muffins-flour-type ] Re:… Read more

Candle carousel project

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

Candle carousel project Candle carousel project Hello, Question about the candle carousel project. We're testing using a timer or stopwatch. We plan to begin the test with 1 candle, then 2, 3 and 4. When we count the rotations using 2 candles for example, do we need to count how many times the blade with the mark passes over both candles. Or do we only check how many times the marked passes over 1 candle throughout the trials regardless of how many are added,? Re: Candle carousel… Read more

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