how do you make a lava lamp that kids like to watch? It's for a science fair?
445357
http://www.homeenvy.com/db/7/487.html
465788
Are you asking how a laser is made, or what sort of things can be made to lase?
978352
A model volcano is always a hit. Or a model of the solar system. For the latter, just string some colored balls on the interior of a shoe box painted black. Pretty simple.
218586
You seem to have been given an assignment for school.\nConvection is motion of material caused by differences in density and is usually caused by differences in temperature.\n\nSo in a lava lamp the radiation of the lamp causes the liquid to heat up and this causes a density change this then leads to a convection current to the top of the lamp where conduction to the cooler part of the glass and radiation from the liquid reduces the temperature again.
90751
Take some balloons and blow them up and watch them slowly lose the air in side over a few days.  Then explain what Osmosis is.   : )   While you have the balloons out fill some with helium and show the kids how they can make their voices change.  Have your video camera ready this will be a hoot!!!
946575
How about visiting this site:\n\nhttp://www.all-science-fair-projects.com/category0.html
220753
I have an eight year old in third grade and she's in the process of making a volcano...she used strips of newspaper, and a flour/water mixture to make paper mache...it's messy but she had fun. \n\nIt's dried now so she'll be painting it tonight. \nAnd to make it "erupt" you throw some vinegar, baking soda, red food dye (for color), and liquid dishwashing detergent together. \n\nShe thinks it's the coolest thing. \n\nI would say for under $20 you could make an awesome volcano and board. \n\n"How to make a volcano" directions are all over the web in case you're interested.
66403
Yes but I think that the "ligth ball" its broken or it needs more electricity to get hot.Then da lava lamp will work.
264226
MAKE A RAINBOW \n\nMATERIALS:\n\nglass of water \nsheet of white paper \nthe sun \nPROCESS:\n\nFill the glass all the way to the top with water.\n\nPut the glass of water on a table so that it is half on the table and half off of the table. Be careful that the glass doesn't fall.\n\nThen, make sure that the sun can shine through the glass of water.\n\nAfter you do that, place the white sheet of paper on the floor.\n\nAdjust the piece of white paper and the glass of water until a rainbow forms on the paper.\n\nEXPLANATION:\n\nWhy does this happen? Light is made up of a lot of colors. Specifically, the colors are red, orange, yellow, green, blue, indigo and violet. When light passes through the water, it is broken up into the colors seen in a rainbow.
490639
There is a website on how to make a volcano model below
819795
Sorry I'm the kind of teacher you parents despair of because thats the kind of home work I'd set.  My class have to design and make a thermal insulator to stop ice melting this week!!!\n\nTry this link it might help\nhttp://www.volcanolive.com/model.html
471247
This is tricky.  Volcano models are a staple of science fairs.  However, if you want to do really well here are some points from a previous science fair judge.\n\n1)  Know the scientific method.  Be able to quote and discuss.\n\n2)  Model your project using the scientific method.\n\n3)  You need to be specialized in your project - general projects exploring a whole category are often overlooked for awards and the best grades.  \n\n4)  Presentation and report - see scientific method for organizing and submit drafts for teacher review.  If you ask they will usually be happy to review and give feedback.\n\n5)  Be organized and know your material.  Have a presentation and review with parents, grandparents and anyone else that will listen.  Practice and use their feedback.\n\nI wish that I had know this when I was back in school.  Science fair projects seemed so scary then.  \n\nGood Luck.
859297
At this age, couldn't you do something like "Science Fair Fun" type of display rather than an actual science fair?  Have each class do a class project to submit for display.\n\nHold a fund raiser type activity - Mad Science night or pot luck dinner, whatever and display the class projects around the room for the parents and other students to view.  Have a couple of presenters from each class get up and talk about the project their class did.\n\nIts not "science fair" but it would be a good introduction to it for the kids.\nHere's a link that might help you find information on what your looking for too.\n\nhttp://www.proteacher.com/110002.shtml
361573
First mould a volcano with plastercine or play dough.\n\nThen fill it with bicarbonate of soda, baking powder or health salt.\n\nGet some vinegar and then mix it with reddish-orangey (Lava colour) ink or food colouring.\n\nThen pour your coloured mixture with the bicarbonate of soda, baking powder or health salt in the volcano.\n\nHey Presto! The bubbles should start to rise. \n\nWhen Bicarbonate of Soda is mixed with an acid liquid (Vinegar)it releases the gas carbon dioxide (CO2): \n\nNaHCO3     +     H+     ----->     Na+     +     H20     +     CO2\n(soda)         (acid)           (sodium)       (water)        (gas)\n\n^ Above is the word equasion. If you are good at science you might be able to understand this.\n\nI hope I helped you.
873828
Here is a site that has alot of science experiments that work well with the elementary age group.\n\nhttp://pbskids.org/zoom/activities/sci/
182140
i'M IN SIXTH GRADE, AND A GOOD SCIENCE FAIR TOPIC WOULD BE "WHICH SUBSTANCE CONDUCTS ELECTRICITY BEST". iT IS REALLY EASY TO DO AND YOU CAN HAVE LOTS OF GRAPHS. FOR EXAMPLE I HAVE 21 GRAPHS. AND MY WHOLE ENTIRE BOOK IS 93 PAGES LONG. \n\nHOPE i HELP YA!!
307975
make a solar cell that will light up a lightbulb. Figure out how by doing an internet search