List of Topics


 

Experiments Feedback

by Ron Kurtus

Readers have sent in a total of 162 comments and questions on Experiments issues. They are listed according to date.

You can read them to further your understanding of the subject.



List of most recent 15 letters

Title

Topic

Country

Thanks for the resources Resources USA
 
Suggested experiment Static Electricity USA
 
Amount of liquid in a certain vessel Measure Volume of Irregularly Shaped Object India
 
Pulling glass sheets and water apart Forces South Korea
 
Volume of a cone Measure Volume of Irregularly Shaped Object Zimbabwe
 
Project resource from student General USA
 
Experiment needs a control group Reasons for Poor Grades USA
 
Calculate friction of an orange Measure Friction with a Scale Nigeria
 
Is this useful for watering plants? Relationship Between Water Pressure and Depths India
 
Project on vacuum insulation Thermos USA
 
Electromagnetic infusion project Electromagnetism USA
 
Static electricity from a comb Electrical Attraction of a Comb USA
 
Friction hypothesis Friction UK
 
How to measure pressure drop Fluids India
 
Find Q General Nigeria
 

Next 15 letters

 





Resources

Thanks for the resources

April 13, 2017

Question

My daughter Ava and I just wanted to reach out and say thank you for your Experiments Resources page. Ava has expressed a real interest in (and knack for) science the past couple of years. This year she decided to join the school's science club - a HUGE step for her. She's generally very introverted and shy. My husband and I haven't been successful in getting her to join anything until now.

Since joining the club she's been constantly on the hunt for new science websites and experiments to try. She came across your page and it has been so great for her I wanted to reach out and say thank you. I can't tell you how happy I am that she's found a hobby she loves so much - especially an educational one!

When I told Ava I was going to email you to thank you for your page, she suggested (insisted) I tell you about this other page she loves on "Car Science Experiments." She thought it might be a good addition to your page. I know the science club used one of the experiment ideas on there for rubber band cars or something of that nature - so hopefully you find some use for it too.

Thanks again and enjoy the rest of your week!

Susan - USA (27999)

Answer

I'm glad that the material has been useful to Ava. It is great that she has found an interest and knack in science and experiments. Her love of science can go beyond a hobby into a great career. And I am sure she will be successful in the things she does.

I added the link for the Car Science Experiments on the Experiments Resources page and included a "thank you" to Ava.

I am sure you are proud of your daughter. Best wishes to her success.

Return to List

Static Electricity

Suggested experiment

February 18, 2017

Question

In answer to the Cambodia teacher. I taught math/science camp. Retired math teacher. Shred tissue paper up into tiny pieces, use a plastic notebook binder sheet to pick up shreds with static electricity, kids k-12 love the experiment, plus it's cheap. MK BS M Ed. I even had Pre-K students try it.

Martha - USA (27887)

Answer

Thanks for the suggestion. I'll pass it on.

Return to List

Measure Volume of Irregularly Shaped Object

Amount of liquid in a certain vessel

February 1, 2017

Question

Hello sir my question is that there is a non uniform vessel which volume is known and there are two valves on it: inlet and outlet. We fill some it with some liquid. Then how do we know how much liquid we filled in with?

praveen - India (27850)

Answer

The inlet and outlet positions will determine how much liquid can be put in the vessel, according to the height of the lowest valve.

You could fill the vessel until the liquid starts coming out of the output valve. Then pour the liquid into a regular shaped container to measure the volume of the liquid.

It seems like extra work, but that is the best way to do it.

Return to List

Forces

Pulling glass sheets and water apart

December 30, 2016

Question

Hello. I am currently a high school student in South Korea. I was assigned to conduct a physics research project in school, but I really cannot even get started on solving it. I read some lessons on your website, and I was wondering if you could help me.

The question is: Investigate the various forces involved when you try to separate two sheets of glass separated by a thin layer of water.

So far, I've found that two main forces will work to make separating the glass harder. First is the fact that you have to break the bonds within the film of water to separate the two sheets, and the second is that sandwiching water between the two sheets creates a pseudo- vacuum which means that air pressure will be pressing down in all directions, and that is what makes separating them harder.

Any and all help will be appreciated. You could basically send me a few key terms to help me get my research started, or send me the name of a research paper, or suggest ways for me to get an experiment designed, and have my gratitude forever.

Thank you in advance!

Hojin - South Korea (27725)

Answer

If you try to pull the glass sheets apart, keeping the surfaces parallel, vacuum areas will be created within the water. Atmospheric pressure will push the glass sheets together. That pressure is much greater than the adhesive bond of the water on the glass.

However, if you pull the glass sheets apart at an angle--almost like peeling them apart--the only forces will be from the water adhering to the glass.

I am sorry, but I don't know of any research papers that you can refer to.

Best wishes for success in your research project. I am sure you will do a great job at it.

Return to List

Measure Volume of Irregularly Shaped Object

Volume of a cone

July 20, 2016

Question

How can l calculate the volume of cone

Flourish - Zimbabwe (27158)

Answer

The equation for the volume of a cone is: V = ?(r^2)h/3 where:
-- ? is pi = 3.14
-- r^2 is the radius of the base squared
-- h is the height of the cone

Thus, if the radius of the base was 2 and the height was 6, the volume would be: 3.14 * 2 * 2 * 6/3 = 25.12

Return to List

General

Project resource from student

July 20, 2016

Question

My name is Jackie, and I'm a summer camp director in Scranton PA. This summer, for the first time, we decided to have a "mad scientist" themed week at camp. Last year we had one fun science day where we made bottle rockets, and it was such a huge hit we decided to kick it up a notch and dedicate an entire week to science this year!

We stumbled upon your page http://www.school-for-champions.com/experiments/resources.htm (thank you google) and it was so helpful to us, I wanted to reach out on behalf of the entire camp and say THANK YOU!:) The same kids that were complaining "I thought this was supposed to be SUMMER why are we doing SCHOOL WORK" were the ones that by Friday were begging me to have another week of science experiments!

One of our campers, Max, let the camp know about another science experiment page he found (he's quite the researcher) called "Science Experiments for All Around Your Home," at http://www.homeadvisor.com/article.show.Science-Experiments-for-All-Around-Your-Home.17372.html . When I told the campers I was going to email you to thank you for your page, Max suggested(insisted) I pass it along to you as a suggestion to add to your resources. Who knew 9 year olds could be so resourceful - and persistent;). Anyway, it is a great resource - my counselors and campers took some awesome ideas from there, so I hope you find use for it too.

Thanks again and have a great summer!

Jackie Campbell

Jackie - USA (27159)

Answer

Thanks for the comments and the suggested resource. I included the link in Science Project Resources and included a credit to Max.

Best wishes for success in your summer camp.

Return to List

Reasons for Poor Grades

Experiment needs a control group

July 9, 2016

Question

I find it very concerning (especially in an area as subjective as human behavior) that you did not address appropriate experimental controls. For instance without a control group of students that achieve good grades and also have tattoos (or an infinite cohort of students w/ good grades none of whom have tattoos), one cannot determine the relevance of the condition.

I think it would be much more effective if performed blinded (ie. all the data was collected for all students and then striated based on GPA and analyzed for correlations of various relevant factors). This would also prevent inadvertent bias in data collection or assumptions upon analysis.

Valerie - USA (27138)

Answer

Thanks for bringing that to my attention. I simplified the project to make it a survey of opinions. This would be good as a beginner project.

Certainly, including a control group, making sure there is no bias, and doing a thorough analysis would be appropriate for more advanced students. Perhaps is it a project I can suggest down the road.

Return to List

Measure Friction with a Scale

Calculate friction of an orange

June 30, 2016

Question

How to calculate friction of orange in a plan surface using alternative formula that is not involved high sensitive instrument.
Thanks

Chibuko - Nigeria (27111)

Answer

If you are sliding the orange along the surface, a simple small spring scale should be sensitive enough to measure the friction resistance. You could also measure the coefficient of friction by using an incline. See Sliding Friction on an Inclined Surface.

However, if the orange is rolling either method is difficult.

Return to List

Relationship Between Water Pressure and Depths

Is this useful for watering plants?

April 17, 2016

Question

What is the useful of these methode,can i watering plants

muhammed - India (26942)

Answer

The experiment shows how water pressure is greater the deeper the water is. However, it really is not useful for watering plants. You want to use a watering can or a water hose with pressure to stream the water.

Return to List

Thermos

Project on vacuum insulation

December 28, 2015

Question

Hi, I am a student starting a science fair project on vacuum insulation--my question is what materials make for the best v.i. thermoses? I want to try to make my containers if possible, and I have access to a vacuum pump via an engineering professor at my mom's college. What I need to figure out is what materials I should use to make the outer container so that it can contain a variety of inside containers (plastic, metal, glass). I'm not sure I can do this and would love some tips. I'm writing from my mom's email address. Thanks for any information you might be able to provide; I read your lesson on thermal insulation and it was really useful. Jordan Schwartz.

Gwen - USA (26653)

Answer

The first goal of your project is to make a thermos and demonstrate that it works. Then you can do a series of experiments to determine the best inside container. Your hypothesis can be a guess which one you think will be best.

Although you could use a glass jar for your outer container, I'm not sure if it might break if evacuated. Thermos bottles have special glass that is strong enough not to break if most of the air is taken out. Perhaps a metal outside container would be better.

Likewise, you'd have to think about the strength of the inside container that is surrounded by a partial vacuum.

Note that you could make a good thermos using other insulating material, such as Styrofoam, paper, or even popcorn.

I hope these ideas help. Best wishes for success in your project. Let me know how things turn out.

Return to List

Electromagnetism

Electromagnetic infusion project

December 7, 2015

Question

I am trying to get the understanding of how to even start a project. I would like to make a electromagnetic wand with an infusion to cause heat as well. But to even understand how to start this project is confusing.

I would like to make this using a battery source verses having to use 110.

If I could just get the basic understanding of what is needed to control the amount of magnetism and infusion I could work with making it stronger as I go.
I hope this makes sense.
Thank you.

Charles - USA (26598)

Answer

You can make a battery powered electromagnet by simply wrapping insulated wire around an iron rod and then providing DC current to the wire.

Infusion usually concerns the process of extracting chemical compounds or flavors from plant material in a solvent. The only time I've seen electromagnetic infusion in on the Superpower Wiki.

I hope that helps with your project.

Return to List

Electrical Attraction of a Comb

Static electricity from a comb

November 25, 2015

Question

will ametal comb after I comb my hair lift paper why

- USA (26563)

Answer

A plastic comb will work much better than a metal comb in building up a static electric charge to lift the paper. However, a metal comb may be able to hold charges to lift the paper. See Causes of Static Electricity and other lessons.

A good experiment is to compare the two types of combs to see which works the best.

Return to List

Friction

Friction hypothesis

November 8, 2015

Question

what is the hypothesis for this particular experiment.

Jeevikash - UK (26505)

Answer

An hypothesis is tentative explanation for an observation, phenomenon, or scientific problem that can be tested by further investigation or experimentation.

With measuring the coefficient of friction by some means, you are really not making a guess explanation. Instead, it is a demonstration of the experimental method.

Return to List

Fluids

How to measure pressure drop

October 31, 2015

Question

how to measure pressure drop through depth I meter or feet

Yogesh - India (26495)

Answer

Although you can show how water pressure increases with depth, you would really need a pressure gauge to measure the different pressures.

Return to List

General

Find Q

June 20, 2015

Question

Find Q if R = 1m

Joshua - Nigeria (26098)

Answer

You need to state what type of experiment you are talking about, as well as to define what items such as "Q" and "R" mean.

Science is about being exact and making sure there are no misunderstandings.

Return to List

Next 15 letters


Misc


Questions and comments

Do you have any questions, comments, or opinions on this subject? If so, send an email with your feedback. I will try to get back to you as soon as possible.


Share this page

Click on a button to bookmark or share this page through Twitter, Facebook, email, or other services:

 

Students and researchers

The Web address of this page is:
www.school-for-champions.com/sfc/
feedback_course.cfm

Please include it as a link on your website or as a reference in your report, document, or thesis.

Copyright © Restrictions


Where are you now?

School for Champions

Experiments Feedback




Subjects in website



Let's make the world a better place

Be the best that you can be.

Use your knowledge and skills to help others succeed.

Don't be wasteful; protect our environment.

You CAN influence the world.





Live Your Life as a Champion:

Take care of your health

Seek knowledge and gain skills

Do excellent work

Be valuable to others

Have utmost character

Be a Champion!



The School for Champions helps you become the type of person who can be called a Champion.