Bring science to your speech sessions! I created this resource to be a companion to making home made lava lamps. This is great for whole group lessons or to use as a celebration activity I do activities like this once per 6 weeks. Non-Alka Seltzer Recipe!

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Introduction Have you sever seen a lava lamp? They might look complicated, but you can make your own using common kitchen supplies. Try this activity to find out how! Background If you look around your kitchen, there are probably a lot of different liquids, including water, juice, milk and oil.

Many of these liquids have different properties that you can see, feel and taste. For example, they all have different densities the amount of mass per unit of volume. Many common household liquids such as juice and milk have a density very close to that of water, so you might not notice a difference.

Oil, however, has a lower density than water, meaning it can float on top of water. It is buoyant. You can see this if you try putting a few drops of oil in a glass of water—they will float on the surface. Liquids are all made up of molecules that have different chemical properties.

Some molecules are polar, meaning they have unbalanced electrical charges. These molecules tend to mix with one another better than they mix with nonpolar molecules, which have evenly distributed charges. You can observe this if you try mixing different liquids together. What can you do with all this information? Observations and results When you pour the oil into the glass you should see it does not mix with the water—it forms a separate, clear layer on top.

This occurs for two reasons: First, the oil and water are different densities—the oil is lighter, so it stays on top. Second, the water and food coloring molecules are polar, so they are strongly attracted to one another. When you drop an Alka—Seltzer tablet into the glass, it sinks to the bottom. It sinks straight through the oil without any chemical reactions occurring. When it touches the water, however, a chemical reaction occurs that releases carbon dioxide gas bubbles.

When they reach the surface, the gas bubbles pop and the water droplets sink back to the bottom—creating a lava lamp effect. Eventually the Alka—Seltzer tablet will be completely consumed, and the chemical reaction will stop. If you let the glass sit still, all the water droplets will sink back to the bottom. Remember, they don't want to mix with the oil.

But as long as you have more tablets, you can keep the reaction going! Cleanup Do not pour all that oil down the drain! It could cause a serious clog. Ask an adult for help disposing of it. Options may include putting it in a sealed container in the trash or pouring it outside. This activity brought to you in partnership with Science Buddies. Follow him on Twitter BenFinio. You have free article s left.

Already a subscriber? Sign in. See Subscription Options. Read Now. Procedure Fill your glass about one quarter full with water. Add several drops of food coloring. Fill the rest of the glass with oil not all the way to the brim. Break an Alka—Seltzer tablet into four roughly equal-size pieces. Drop one of the pieces into the glass. What happens? Wait for the bubbles to stop, then drop in another piece.

How long do the bubbles last for each piece? Extra: Stand a large flashlight on its end, with the light facing up, and place the glass on top. Turn off the lights in the room and turn the flashlight on. Extra: Try the activity with different temperatures of water. How does water temperature affect your results? Extra: Try using half a tablet or even a whole tablet at once. Extra: Try pouring some salt into your glass instead of using an Alka—Seltzer tablet. Extra: Try reversing the order in which you add substances to the glass.

What happens if you pour the oil in first, then add the water and food coloring? Try making a lava lamp with different liquids you can find in your kitchen. What combinations of liquids work, and which ones don't? Can you figure out why? If necessary, use towels to clean up any spilled water or oil. Build a Cooler. Get smart.

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Speech Lava Lamps! Speech therapy experiment visuals and worksheets

In this S. M lab, students will work in groups to make a lava lamp from a water bottle. After filling the water bottle with oil, water, and food coloring, students will drop some effervescent tablets in and watch their creation come to life! This is a quite simple project for middle schoolers, but it's lots of fun. You can make changes to the text in Adobe Acrobat Reader!


Make Your Own Lava Lamp

A lava lamp is a decorative lamp, invented in by British entrepreneur Edward Craven Walker , the founder of the lighting company Mathmos. The lamp consists of a bolus of a special coloured wax mixture inside a glass vessel, the remainder of which contains clear or translucent liquid; the vessel is then placed on a box containing an incandescent light bulb whose heat causes temporary reductions in the density of the wax and surface tension of the liquid. The lamps are designed in a variety of styles and colours. A classic lava lamp contains a standard incandescent or halogen lamp which heats a tall often tapered glass bottle. A formula from a US patent consisted of water and a transparent, translucent , or opaque mix of mineral oil, paraffin wax , and carbon tetrachloride. Common wax has a density much lower than that of water and would float on top at any temperature.


STEM Activity Challenge - Lava Lamps (6th-8th Grade)


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