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Sometimes it can be the colours (red or orange) but its mostly the wax is meant to look like lava hence lava lamp.

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Light, heat and kinetic energy.

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When a lava lamp is turned off, there is a pile of stuff at the bottom. When you turn it on a big light lights up at the bottom of the lamp and bubbles form and float, right? This is because the substance at the bottom of the lamp is very light WAX. The light heats up the light wax and this makes the wax lighter. There is a liquid in the lamp (a jelly type of liquid) that makes the light wax even lighter. Now, because the light heated up the wax, it leaves bubble SHELL. There is nothing inside the bubble but air. And so this ALSO makes lighter. With all these factors making the bubble lighter it slowly begins to rise up. As it moves away from the light it cools down, but there is a light at the top so when it gets to his light it catches onto the OTHER wax at the top of the lamp. By this point it has cooled down alot which makes it heavier and is now bigger. So the wax sinks to the bottom

Slowly and heats up again by the light at the bottom. This cycle repeats for ever until the batterys run out. Hope this helps ;)

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It is just for decoration

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Theoretically you can. You can also theoretically leave a fire burning unattended in a fireplace. Is it a good idea? No. Lava lamps get awfully hot. If it were to tip over or break, it would create a fire hazard. I wouldn't recommend it. Hope this helps

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Incandesent round mini-bulb designed specifically to fit into lava lamp with appropriate wattage to heat the volume of the lamp to a temperature that melts the wax compound without overheating the liquid volume. Very precise so use only the manufacturer's recommended bulb.

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a spring in the bottom & top of the "lava" is heated by a light in the bottom of the lamp

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lava lamps by Yvonne Bernal

The unique lamps were created by a British inventor and former World War II pilot, Edward Craven-Walker, who reportedly thought up the idea after seeing a homemade, liquid-filled egg timer at a pub.

In September of 1963, Craven-Walker started a company to research and develop his invention. But his widow, Christine Baehr, told BBC News they had a rough time, at first, trying to find investors.

But Baehr said that, after the couple took their product around the British countryside in a van, word of the wildly original illumination spread. Pretty soon lava lamps could be seen in science fiction movies and television shows like "Dr. Who," and became extremely trendy. By the mid-1960s, according to an MIT report, lava lamps "had exceeded 7 million units worldwide."

Baehr told The Associated Press that she knew the lava lamp had "made it" as a product when she heard that Beatles drummer Ringo Starr had purchased one.

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Hypothesis: . If the density of the food coloring and the oil is to different then the liquids will no combine and will separate forming something like a lava lamp.

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It is called a "lava lamp" and the effect is caused by the heat of the bulb in the lamp causing one of the liquids to warm up and become less dense than the other (it is denser in the cold state). The less dense glob then rises up and breaks off and travels to the top of the lamp where it cools then sinks once again to the bottom of the lamp.

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The heat source at the bottom of the lamp (usually light bulb) heats up to a very high temperature. With wax lava lamps the solid wax needs to melt first. Once the wax is liquid, it will start to absorb heat from the light bulb. Once it has collected enough heat, a blob will float to the top to cool down. Once the blob of liquid wax has cooled at the top, it will sink down to the bottom to collect more heat.

Also when it is heated at the bottom, the blob becomes less dense than water so it floats. When it cools at the top, it becomes more dense and sinks. Hope this helps!

=^^=. This is not true

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it uses a convection current

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C2-H12-Fe18

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Lava lamps get hot because you have to plug them into the wall and wen you do that it creates energy so then your lava lamp heats up and then the stuff inside it can work.

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I've done this if i were you i wouldn't do it It explodes and the "Lava"

burns your skin like melted glass. Don't Try it

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The 'lava' in a Lava Lamp is actually a chemically treated wax. The clear (sometimes colored) liquid is water. When the lamp is turned on the metal coil inside the glass chamber is heated by the light bulb. The reason it sinks and rises is because when the molecules inside the wax get heated up and speed up and expand. This causes them to become less dense than the water causing them to rise. When they are at the top the molecules slowly get colder and they slow down which makes them more dense than the water, so the wax sinks.

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No there is NOT real lava in lava lamps. If there was real lava in lava lamps, it would burn, it just oil and water.

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The give of light to see by but also provide a source of movement that gives a room "mood" - sort of like watching the flames of a flickering fire. It helps you relax.

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Convection is when hot substances rise and cool ones sink. The colored wax heats up at the bottom of the lamp where the bulb is, then rises up, cools, and sinks again.

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the bulb is usually 30 or 40 watts

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why does the lava sink or rise?

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Don't - You replace the wires just as you would for the original wiring but you must use a lower guage wire size - meaning a thicker wire. The AC cord for lamps in the past 30 years was at least good for 500 watts. Don't forget that the wattage rating my not be limited by electrical considerations but by thermal limits. A larger bulb may melt or burn the fixture itself, not just the socket.

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A lava lamp is a chemical change