Ask an Expert (Page 34)

STS Finalist

Ask an Expert Topic Forum: Preparing for the Competition

STS Finalist STS Finalist Is there any STS finalist who can tell me what the competition is like? What kind of questions will we be asked and what to expect? Beyond knowing your project in depth (which is given), is there anything to prepare for, and if so, how? Re: STS Finalist Hi John - Congratulations if you are moving on as an STS finalist! I don't believe there are volunteers helping in these forums right now who will be able to provide information about presenting at this fair.… Read more

Question regarding pill score calculation for delayed release pill challenge

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

Question regarding pill score calculation for delayed release pill challenge Question regarding pill score calculation for delayed release pill challenge In the below mentioned experiment, the pill score calculation starts with 700.I am not sure why the score starts with 700? Can you please explain in detail the reason for it? Thank you. Regards, Nishka 6th grade student. Delayed Release Pill Challenge: Getting Medicine to the Right Place at the Right Time Abstract A lot of medication comes… Read more

Jumping Robot

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

Jumping Robot Jumping Robot Hi, Is there a video to show how to solder the on/off switch and or use the breadboard switch for the jumping robot? I tried to add a switch to the robot and the battery would start to smoke. What am I doing wrong? What’s the best way to install a switch to turn it on / off? Re: Jumping Robot Hi there, There is no video on ScienceBuddies that shows how to solder the wires, however you can use a breadboard to supplement the soldering. All the switch does is… Read more

Electricity, Electrolytes, Confused Parent

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

Electricity, Electrolytes, Confused Parent Electricity, Electrolytes, Confused Parent Hello, I'm helping my son with his science fair project. Our plan is to guess which of various substances will _______ electricity [this is my question] the best. He will make a guess, explain it and then conduct the experiment (with close supervision). Ammonia, vinegar, distilled water, lemon juice and a few substances will have zinc and copper nails dipped in them, with each hooked up to a voltmeter. … Read more

bioluminescent bacteria

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

bioluminescent bacteria bioluminescent bacteria I have a student using bioluminescent bacteria to detect heavy metal contamination in water. We have a Vernier light sensor and a tiny circuits light meter, but neither one is picking up light from any of our bacteria ... stock or in the contaminated waters. We subcultured the bacteria, so we know it is alive and properly reproducing. Does anyone know why we can't seem to pick up light readings? Re: bioluminescent bacteria Hello,… Read more

Science Project Suggestions for High School Students?

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

Science Project Suggestions for High School Students? Science Project Suggestions for High School Students? Hi everyone I am looking for ideas for a fun science project for high school students. I want a project that is practical, easy to do, but still creative. Some of my areas of interest are renewable energy, environment, and artificial intelligence. Can you suggest suitable projects for me? Also, if you have any reference materials or instructions, I would love to hear from you. Thanks… Read more

Help defining question/hypothesis

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

Help defining question/hypothesis Help defining question/hypothesis My daughter is wanting to do a science fair project about dreams. She’s done the background on what dreams are, theories on why we dream but we’re struggling with the project portion. She’s decided to give out a questionnaire about people’s dreams and she thinks she would like to compare differences in adults’ and kids’ dream content in her “hypothesis”Would a survey asking about topics of dreams, frequency of nightmares be… Read more

Automatic plant watering system

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

Automatic plant watering system Automatic plant watering system I have built the circuit described be the instruction and used the correct code I believe, but the water only pumps the first time it switches on. How do I fix this. Moderator: Project: https://www.sciencebuddies.org/science-fair-projects/project-ideas/PlantBio_p055/plant-biology/arduino-automatic-plant-watering Re: Automatic plant watering system Hi - depending on the size of the pot, the type of plant, and how much water… Read more

Mass Driver Project Question

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

Mass Driver Project Question Mass Driver Project Question My 7th grader is working on the Mass Driver project currently and we do not happen to have any hall effect sensors at the moment. Would IR sensors work in their place? I had an additional question, could he reverse the polarity of the electromagnet using an L298N motor driver? I thought it might work but I don't want to frustrate him with my possibly bad idea. He wanted to try to push the projectile after it passed the sensor by… Read more

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