Lava Lamps

You need: A clear bottle

                  Oil

                  Water

                  Food colouring

                  A fizzy tablet

What we did: We filled the bottle half full of oil, then we added water. We added a few drops of colouring, then dropped in the fizzy tablet which we broke into pieces. We put the lid on.

This is what happened:

Madeline thought: When you drop in the dissolved tablet, it makes all the dye fly out and bounce back and since the oil is there it is making it slower.

 

Lucy thought: The oil and the water didn’t mix. The food colouring and the oil mixed and made bubbles and they rose.

Luke thought: The tablet made the water and the oil mix together.

Lily thought: The oil didn’t want to mix with the water molecules and the tablet fizzes.

I Wonder:

Kaelan wondered: Why are there normal and colourful bubbles?

He found out-With a soda bottle, oil, water makes a special ingredient that makes the whole thing bubble, fizz, erupt.

Madeline wondered: Why oil sits right on top of the water?

She found out- The reason why oil floats on water is because water and oil have different densities.

Jada wondered: Could you use dish liquid instead of oil?

Hannah wondered: How long will it last?

Breanna wondered: What kind of tablets can you use?

Lily and Cody wondered: What would happen if you put salt in the water?

Ben found out: Water is more dense than oil.

Erin wondered: What would happen if we put more fizzy tablets in?