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make a lava lamp
Whats the best way to make a homemade lava lamp!?
Whats the easiest, or best way, of making cool homemade lavalamps.
Easy Science Projects
Make Your Own Bubbling Lava Lamp
Learn how to make an inexpensive science toy that will be a guaranteed hit with the kids! Ok, so everyone knows that oil and water don't mix. Try adding a few drops of food coloring and a little Alka-Seltzer fizz to the solution and the bubbling concoction is guaranteed to provoke a few ooohs & ahhhs!
Materials:
- One clean, plastic soda bottle (16 oz. size works well) - Soda bottle cap - Vegetable oil (the cheaper the better) - Food coloring - An Alka-Seltzer tablet - Water
Watch the Video
Experiment:
- Fill the bottle 3/4 full with vegetable oil.
- Fill the rest of the bottle with water (almost to the top but not overflowing).
- Add about 10 drops of food coloring. Be sure to make the water fairly dark in color. Notice that the food coloring only colors the water and not the oil. Hmmm?
- Divide the Alka-Seltzer tablet into 8 pieces.
- Drop one of the tiny pieces of Alka-Seltzer into the oil and water mixture. Watch what happens. When the bubbling stops, add another chunk of Alka-Seltzer. It's just like a lava lamp!
- When you have used up all of the Alka-Seltzer and the bubbling has completely stopped, screw on the soda bottle cap. Tip the bottle back and forth and watch the wave appear. The tiny droplets of liquid join together to make one big lave-like blob.
How Does It Work:
First of all, you confirmed what you already knew... oil and water do not mix. The molecules of water do not like to mix with the molecules of oil. Even if you try to really shake-up the bottle, the oil breaks up into small little drops, but the oil doesn't mix with the water. Food coloring only mixes with water. That's why it does not color the oil.
When you poured the water into the soda bottle with the oil, the water sank to the bottom. That's because water is heavier than oil. Scientists say that the water is more dense than the oil. If oil from a ship spills in the ocean, the oil floats on top of the water.
Here's the surprising part... The Alka-Seltzer tablet reacted with the water to make tiny bubbles of carbon dioxide gas. These bubbles attached themselves to the blobs of colored water and cause them to float to the surface. When the bubbles popped, the color blobs sank back to the bottom of the bottle. Now that's a burst of color!
This is the site.
http://www.stevespanglerscience.com/experiment/35
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little big planet: how to make a lava lamp
You remember that yard sale you used to have every summer? Well buying and selling with online auctions is much like that, except over the internet and with millions of potential customers and vendors. If there's a rare trinket you're looking for or simply have to get rid of that lava lamp from 1969, then with a little bit of know how online auctions could be the key to your success.
Primarily, just like you would in the real world with high street stores, shop around. Check the going price for the item you're after by scoping out all the final bids that it's been bought for. This will give you a good idea of realistic price bracket and from this you'll be able to decide whether you can or can't afford to purchase the item in question. Next, do some research into the sellers, check their history for positive or negative comments from people who have bought from them in the past and whether they returned for repeat business. The online auctions are a self policing community where members offer honest feedback on other members and buyers and sellers come with a satisfaction rating attached.
When buying there are a few handy tricks that help you cast the winning bid. For example, add a few pennies to your offer in order to creep above other bids, you may beat every one else by spending just a five pence more. Another important element is your timing. Last minute bidding is known as sniping, where a well timed offer can snatch the item from other members right at the last minute.
When it comes down to selling it's very beneficial to buy several items from online auctions in order to build up your personal profile with positive comments and improve your satisfaction rating. Include clear photos and a thorough description including mention of any unique features that may help you sell it. Research the sellers market for other people selling the same item as you or similar, its always a good idea to be aware of your competition. Respond quickly to any questions regarding your sale and make it obvious that you accept credit or debit payments.
Familiarise yourself with particular auction's rules. For example many prohibit the sale of firearms whereas some niche online auctions specialise in it. Knowing the rules will prevent you from breaking them unwittingly. Lastly, save all correspondence regarding your transactions as these may prove vital if there are any discrepancies later on.
