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/sci/ - Science & Math

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3970305 No.3970305 [Reply] [Original]

Hey bro's and sis's

I'm looking for a science fair project for my little brother in 7th grade. I want him to do something smart (no cliche baking soda mountain experiment)

Got any smart science fair project ideas that a low middle class family can afford/do??

>> No.3970308 [DELETED] 

inb4 growing crystals with ammonia and bleach

>> No.3970312

http://www.sciencekids.co.nz/experiments.html

>> No.3970313

Give him a battery, a few resistors, some light bulbs and switches. Possibly are endless. Literally endless.

>> No.3970316

One of the clock reactions.

>> No.3970326

A pot of boiling water and a tray of ice can make clouds.

Little mini clouds are fucking awesome

>> No.3970336

teach him how to cook meth

>> No.3970351
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3970351

>>3970336
That was so funny I popped myself a little bit

>> No.3970362
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3970362

>>3970351

>> No.3970376

Science fairs shouldn't be about which parent/sibling can out-think a bunch of 7th graders. Tell him to choose a genre of science that's interesting and research previous ideas.

I assume you're not looking for something truly original...I suspect that if you were in the Intel Fair, you wouldn't be on /sci/ in the first place. This means there's plenty of ideas that you have to just make a small change to to demonstrate that you're alive. Cite the original project and talk about the changes you made.

>> No.3970390

Brainstorm with him, starting very general, trying to work towards some specialized field.

What does he like?

>> No.3970398

Make a small liquid thorium reactor.

>> No.3970409
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3970409

>>3970305

Do electoysis on water
>>3970317

Place small clear containers above each electrode to catch the resultant oxygen or hydorgen.

Knowing the volume/moles of h2 and o2 (in chemistry books), You little brother can do very simple caculations to get the ratio of H to O in water (based on the weight and volume of the H2 and O2 he gets from the experiment).

He will end up confirming that WATER = H2O

Title: "Is water really H2O?" or someshit like that

He will win the fucking science fair.

YOU ARE WELCOME.

>> No.3970416
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3970416

>>3970409
>>3970409
>experiment requires only household shit and internet

>> No.3970424

>>3970409
>7th grade
>Molecular chemistry

I don't think so, chap.

>> No.3970429
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3970429

>>3970409
This type of experiment is often done in Chem 101 university labs.

Yes, your brother will win the science fair with this.

>> No.3970432

>>3970424


>molecular chemistry
>simple mole equations

Not hard, bro.

>> No.3970437

Build a breeder reactor in your backyard. It has been done.

>> No.3970449
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3970449

>>3970424
As long as the boy knows how to mutiply + divide, he will be fine. Basic multiplication and division are the only operations he will need to do. No fancy fucntions, no algeba, JUST MULTIPLICATION AND DIVISION.

>> No.3970451

will alka seltzer dissolve faster in hot water compared to cold?

>> No.3970465

Test the efficacy of different disinfectant compounds on a couple different S. aureus strains.

All you need is a microscope, agar, an autoclave, an incubator, and.... nevermind

>> No.3970517

>>3970465
I've done that one. That's boring shit.

>> No.3970521

>>3970409
BONUS:

Take the Hydrogen and create an explosion. Kids love explosions.

>> No.3970556

>>3970409
how do you catch the hydrogen and oxygen without any escaping and then weighing it while knowing you've displaced all the air?

>> No.3970610

>>3970521
its actually a good way of showing that the hydogen you collected is indeed hydrogen
as for showing you collected oxygen... dunno anyone have any ideas?

>> No.3970652
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3970652

>>Science fairs shouldn't be about which parent/sibling can out-think a bunch of 7th graders.


It's not about that, it's about helping him work on a project that will stimulate his interest in science, instead of the science fair being "just another assignment" for him

>> No.3970654

>>3970610
it's easy. take a smoldering stick, dip it in oxygen - if it lights up again it's oxygen

>> No.3970661

>>3970652
I say again, make one of the oscillating ("clock") reactions. Just google it, there's a bunch of them with easily available chemicals. It looks really nice.

>> No.3970662

Get a braindead body and explain how the Lazarus Reflex happens:
http://www.youtube.com/watch?v=H-RXcW16ylQ

>> No.3970683

COLD FUSION

>> No.3971564
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3971564

>> 3970326

link?


>>3970390

basketball. Any basketball related science fair projects out there? brb google


>>3970661

just googled the oscillating clock reactions, is that a project that's simple enough for a 7th grader who hasn't taken any chemistry yet? I don't think they start chemistry at that age (he's not stupid btw, he's in a TAG school)

>> No.3972708
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3972708

bumping ttt

>> No.3972736

Have him do a pitch drop experiment.

When's the project due, by the way?

>> No.3972759
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3972759

perpetual motion machine... teach the controversy

>> No.3973032

recreate the baghdad battery

>> No.3973611

>> 3973032

wow, my first time hearing of this. So the ancient people of Mesopotamia were using electricity 2000 years before we invented it?

>> No.3973639

http://www.physics.isu.edu/~hackmart/spl1ssar.pdf

Easy as shit and you'll get amazing results if you do it right.

>> No.3973640

>Measure the speed of light
>Get two computers
>Connect them to one another via a cable
>Ping one of them with the other
>v=d/t
>You have now measured the speed of light

>> No.3973648

>>3970376

This.

/thread

>> No.3973656

very easy one.
plant growth under different colors of light.

>> No.3973660

When I was in 6th grade, I looked at how different liquids preserved apples.

The winning project was someone who took some free range and battery eggs, and measured their strength by dropping them at different heights.

Moral: don't fucking overthink things (until you have to do an IB EE in science)

>> No.3973688

>>3973640
>Implying electrons move at c

>> No.3973690

>>3973688

>implying the computers weren't linked with fibre-optic cable

>> No.3973697

>>3973690
Implying the processor processes instantly

>> No.3973700

>implying I ever implied that

>> No.3973702

>>3973700
>Connect 2 cables using fiber optics to calculate c, therefore it must be accurate
It was implied you have no idea how flawed your experiment is

>> No.3973705

>>3973702

>implying I was the guy who posted that.

I just corrected your stupid assumption that the computers were connected using ethernet cable.

>> No.3973713
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3973713

>>3973705
I didn't even say they were connected using ethernet, I was just saying computers use currents and voltages to process any information. I was still right

>> No.3973719

>>3973713

>"Implying electrons move at c"

that is what you said, dumb faggot

>> No.3973728

>>3973640
>Connect them to one another via a cable
>Ping one of them with the other

On top of the obvious reason you can't measure C like this others have pointed out; that's not even how a ping works. You need a router between the computers.

>> No.3973734

>>3973719
Yes, and processors use electrons. Computers will use electrons. No matter what you try and argue, I just the system does not react instantly due to the nature of computers (electron movement doesn't occur instantly omg). I'm just pointing out why the experiment is flawed but you can keep arguing for it

>> No.3973738

>>3973734

>implying I was arguing for it

just pointing out how pathetic your criticisms of it are.

>> No.3973745

>>3973738
Pathetic? I was right. That's like you telling Galileo that his criticism of the geocentric universe was pathetic when he clearly laid out his reasoning for why it was wrong

>> No.3973780
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3973780

>>3973745

>comparing yourself to Galileo

>> No.3973782

Schrödinger's cat

>> No.3973805

not sciencey but very catchy and easy to understand for their age group. just get to go bags from different fast food chains bury them and see which ones decompose the best

>> No.3975539

>>3970661

The clock reactions use too many chemicals. They don't even start chemistry at that age so its stupid to have him jump to working with acids and other dangerous chemicals when they don't teach the periodic table till like 8th or 9th grade

>> No.3975645
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3975645

>>3970326

Mini clouds? how do you do that? link please


>>3973805

good idea but we don't have a yard, we live on the 3rd floor
He likes basketball, what do you guys think of this one below:

>>Is vision necessary to make a free throw. This is an interesting hypothesis for medicine-health science fair projects. In this experiment you will be testing to see if a person needs their sight to make a free throw, or if they can use their other senses to target the hoop. The basic experiment will simply compare free throw percentages from shots taken with your eyes open and shots taken with your eyes closed or covered. You can then advance this experiment by placing an auditory signal above the hoop and see if a person can make a free throw with their eyes closed if they have an auditory signal.

>> No.3975746

The experiment is too flawed in my opinion. It will be too skewed by the fact that people will mainly be shooting on memory when shooting eyes closed. and if you spin or move them, they have a VERY small chance of making the basket.

Finally when the audio signal goes on, the experiment produces interesting results with not much backing. It will see who has the best ears or memory.

What do you think?

>> No.3975751

plus what is the point of blind people being able to make free throws. Its better off them learning to read braille. Being able to make a free throw will not help them against Shaquille O'Neal.

>> No.3975811

>>3975645
you use ice to chill air inside an upside down tube or tray. Then you place the boiling water underneath

The steam will rise, and when it mixes with the cold air, it will cool and expand. Forming a little cloud.

It is even possible to get rain going on. But for such drastic results I believe you need more than ice and a hotplate. Maybe some sort of refrigerated coil. Not quite sure.

>> No.3975842

>>3973690
>light in glass travels much slower than c. about 0.67c.

>> No.3975861

make a 'room temperature superconductor':
http://arxiv.org/ftp/arxiv/papers/0805/0805.0230.pdf

>> No.3977137
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3977137

>>3975746 It will be too skewed by the fact that people will mainly be shooting on memory when shooting eyes closed.

I agree on this point, but if they're moved to a different spot and than asked to shoot in the direction of a beeping phone placed near the hoop it could give some interesting results if we get people who are good shooters
>> Finally when the audio signal goes on, the experiment produces interesting results with not much backing. It will see who has the best ears or memory.


Blind basketball games where the players must find the hoop using the beeping alarm placed on the rim? sounds pretty interesting to me

>> No.3977266

Get him to make yellow gas.

All you need is to get him some concentrated ammonia and bleach. Then get him to tip them together in a bucket at the science fair.

Be careful though ammonia is quite pungent so don't go sniffing that, won't posion you but it's like getting punched in the face.