| Subject | Date Asked | Expert |
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| good idea for a Science Project | 2/12/2004 | Dan Fink |
Q: I am trying to find something cool for my brother's science fair. I need something that can be built ...
A: We love tesla coils up here, but they are still pretty dangerous. The low-amperage sparks that come ...
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| physical science | 2/11/2004 | Dan Fink |
Q: for my science fair project; I would like to know about "How does a pully help you do work" ...
A: This sounds like a great science project. With a simple spring scale and careful notes you can prove ...
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| amplifier | 2/9/2004 | Dan Fink |
Q: You guys are the best! They don't teach you stuff like that in school, it's always stuff like ...
A: Portable radios don't have that much output power -- like 250 milliwatts (1/4 of a watt) max. And ...
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| HELP! | 2/8/2004 | Dan Fink |
Q: I need a good hypothesis for my science fair project. My project is a tornado simulator. I need you ...
A: I just answered this one for someone else....here's a copy of the answer. Have fun. DAN Subject: ...
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| science | 2/1/2004 | Dan Fink |
Q: hi i need help with something why does cold and hot liquids stay that way and what effect it has ...
A: When something is hot, it's molecules are moving faster than something that's cold. They have more ...
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| solar power | 11/26/2003 | Dan Fink |
Q: How the energy is stored and transformed for use and how the energy is transformed to produce ...
A: I'm assuming you mean electricity from the power utility. To generate electricity with energy, ...
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| Inventions | 10/23/2003 | Dan Fink |
Q: I am interested in documenting the major scientific inventions from the 18th century onwards. Could ...
A: I found a keyword trick on Google that might help you. Include the word "timeline" in your search! ...
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| Generating power with rodents | 9/23/2003 | Dan Fink |
Q: My daughter is very good about thinking of science fair questions, sometimes they are difficult to ...
A: Oh, no.....I never thought I'd actually have to research this one for real ;~) It's a great idea! ...
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| Energy | 7/7/2003 | Dan Fink |
Q: Hey, I just wanted some help with my science energy project: Just so I know how to go about it, what ...
A: Good questions! Forms of energy are classified into 2 broad categories: Potential and Kinetic. ...
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| Project Problems | 4/26/2003 | Jack D Papin |
Q: Maybe you would be able to help? I have to do a science experiment involoving variables. One ...
A: Sure! You can do it on liquid quantity as the variable! Get 10 identical crystal wine glasses and ...
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| Electricity Conductors | 4/6/2003 | Dan Fink |
Q: Why can paper not conduct electricity or be elctrified? Is it because it is a plant origen?
A: It's all in the atomic structure. Electricity flows by electrons breaking free from their atoms, and ...
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| nuclear energy | 3/15/2003 | Dan Fink |
Q: what were the long term and health effects from the chernobyl nuclear disaster? What is synroc? How ...
A: I was able to find quite a bit about Chernobyl on Google--lots of recent articles because of the ...
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| science fair projects | 3/10/2003 | Dan Fink |
Q: My 10 year old has to make an orange tell time for his 5th grade science fair and i have not been ...
A: Of course you could set the orange up to be the center (gnomon) of a sundial.....;~) However I ...
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| Forces on an egg | 3/7/2003 | Dan Fink |
Q: Could you please let me know how to prove experimentally that an egg can withstand a greater force ...
A: The way I would do it -- is use an xacto saw to cut some eggshells in half, some across the long ...
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| Gum smell and flavor. | 3/6/2003 | Dan Fink |
Q: My 3rd grade daughter was assigned a science fair project. She was assigned to do an experiment with ...
A: First, I suggest checking some science fair resources on the web. The first and most important thing ...
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| Gum smell and flavor. | 3/6/2003 | Jack D Papin |
Q: My 3rd grade daughter was assigned by her teacher to do a science fair project about gum smells or ...
A: Science Fair Projects should be chosen by the student!:( When I was a student we got to choose our ...
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| I have a six year old son... | 2/25/2003 | Dan Fink |
Q: I have a six year old son who is very excited about, and interested in anything electrical, ...
A: You should check out the Robot Store -- http://www.robotstore.com. They have a great website and ...
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| Removing stains from cotton cloth. | 1/3/2003 | Dan Fink |
Q: I'm doing a science project about which commercial stain remover works best on tough stains like ...
A: What I would do -- is first use the library to find the latest issue of "Consumer Reports" magazine ...
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| is a circular rainbow possible? | 12/9/2002 | Dan Fink |
Q: based on a viewer's height (ground level vs. viewing from an elevated hot air balloon) is a circular ...
A: You mean a naturally-occuring phenomena, right? It is possible--if it weren't for the horizon in ...
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| Equals | 10/14/2002 | Dan Fink |
Q: what does one ohm equal? one amp? Thank for da help, Love **H**
A: Ohms are a unit of electrical resistance. Amperes define how many electrons are moving. And Volts ...
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| Science grade 9 | 10/6/2002 | Dan Fink |
Q: I am in a grade nine science class and we are learning about electricity . There are 24 or so ...
A: The big one, which I use every day in my alternative energy job, is Ohm's Law. Most of the ...
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| Maggots | 8/11/2002 | Dan Fink |
Q: I am a kid who presented at the Ontario Institute of Studies and education, from rose avenue school ...
A: There are over 100,000 different species of flies (Diptera)...so there may be some exceptions I ...
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| ignition temperature | 7/17/2002 | Dan Fink |
Q: What is the burning temperature of tissue paper? Not just ordinary paper - tissue paper. Like that ...
A: There aren't any tables out there that I could find. I think the reason for this is that there are ...
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| sugar crystals | 4/9/2002 | Dan Fink |
Q: Mr. Fink, my granddaughter would like the recipe for making sugar crystals. I would very much ...
A: Sugar crystals are a fun project...but adult supervision is needed, because the sugar solution is ...
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| how many lightbulbs | 4/5/2002 | Dan Fink |
Q: I am a scupltor, not a kid, but I have my moments. I hope you don't mind answering this question ...
A: Actually, kids are the ones who ask the really hard questions! Most normal household circuits are ...
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| Sodium Sulfite | 4/4/2002 | Dan Fink |
Q: Though this is a chemistry, not a physics question, your obvious interest in children gives me the ...
A: The problem is buying only 8 tablespoonsful, and finding it locally! If you can locate a local hobby ...
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| What makes the bubbles | 2/28/2002 | Dan Fink |
Q: I wanted to know what makes bubbles in my toothpaste and in my soap. I heard from my teacher at ...
A: Bubbles are an amazing scientific phenomenon...and are really fun! And kind of complicated.... ...
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| Science Fair | 1/26/2002 | Dan Fink |
Q: My daughter is participating in her school science fair and she wants to do a comparison of ...
A: (What material would be able to be stained like tooth enamel and yet be able to be cleaned like ...
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| science fair project | 1/20/2002 | Dan Fink |
Q: fink. i am having a problem with my science fair project. i want to find in what liquids a certain ...
A: I also had no luck searching the web for background information. So my best advice is, think of all ...
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| Physics | 1/14/2002 | Dan Fink |
Q: It's winter. So I wanted to put on the heater as it very, very cold. My dad refused saying that it's ...
A: Well, it takes energy of some form to make heat...and energy is expensive, and making it pollutes ...
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| Molecule spreading | 1/8/2002 | Dan Fink |
Q: In class we have been discussing what happens to a drop of food colouring in water. We have been ...
A: Your electrical charges theory is a good guess...but #2 is the correct answer. It's called "Brownian ...
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| Science Project on Electricity | 12/23/2001 | Dan Fink |
Q: Neither my wife, myself or my 11 yo daughter are great at science (wife and I never participated in ...
A: Wow, what a good idea! I am also a firefighter for the local VFD. Electrocution by downed power ...
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| Science | 11/18/2001 | Dan Fink |
Q: What is the defention of airpressure?
A: Definition of Air Pressure: It is the weight of the atmosphere's air pushing down on you and ...
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| Material for Science Project | 11/13/2001 | Dan Fink |
Q: Can you help me find out wher i can buy Strips of Carbon and Strips of Zinc, I look everywhere, I ...
A: Sounds like you're experimenting with a LaClanche cell...an early battery formula. Cool! We've made ...
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| salt in water | 11/12/2001 | Dan Fink |
Q: i need to do a report on salt water,i was hoping that you might help me, my question is where does ...
A: The salt comes from rivers running through mineral salt deposits and dissolving. Once the -very ...
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| Hydroelectric powers. | 11/2/2001 | Dan Fink |
Q: Hi, my name is Alfred, and I am a grade 9 student in Toronto. I have read some books which were ...
A: I run an alternative energy website for do-it-yourselfers, http://www.otherpower.com. I love ...
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| raft building | 10/28/2001 | Dan Fink |
Q: My daughter (7th grade) has a science project that's shes practically got the whole neighborhood ...
A: Buoyancy is governed by Archimedes Principle: any body completely or partially submerged in a fluid ...
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| About fluids | 10/10/2001 | Dan Fink |
Q: Can one fluid displace another? Are solids the only things that can displace fluids? Is there a ...
A: They key thing with fluids is the specific gravity. Water is specific gravity=1.00 (at a certain ...
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| science fair project | 10/6/2001 | Dan Fink |
Q: I am a 6th grader. I have to make a science fair experiment. What do you think would be the most ...
A: Well, since you decided you like electricity, here's some ideas. I think one of the coolest things ...
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| I'm studying what happens to heated balls of air | 9/23/2001 | Dan Fink |
Q: Can you help me in suggesting ways to study hot and cold air in a compressed environment such as a ...
A: Getting the experimental data is the hard part...the formulas are really easy. Boyle's law: If ...
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