DIY STEM Project For Kids: Lava Lamp Experiment

In this video tutorial, the teacher demonstrates how to create a lava lamp effect using a glass, vegetable oil, water, food coloring, and Alka Seltzer tablets. The process involves observing the interaction between oil and water, adding food coloring, and using Alka Seltzer to create bubbles and a lava lamp effect. The teacher explains the science behind each step and encourages viewers to try the experiment themselves and share their results.

What is the reason oil and water do not mix in the lava lamp experiment?

• Oil and water have different densities.

• Oil is lighter than water.

• Water evaporates quickly.

• Oil is a solid at room temperature.

What causes the initial bubbles to form when water is added to the oil?

• Air pockets form as water and oil separate.

• The glass is too cold.

• The oil is evaporating.

• The water is boiling.

Why does the food coloring initially sit on top of the water?

• The water is too cold.

• The food coloring is a solid.

• The oil prevents it from mixing due to surface tension.

• The food coloring is lighter than water.

What role do Alka Seltzer tablets play in the lava lamp experiment?

• They cool down the mixture.

• They break the surface tension and create bubbles.

• They dissolve the oil.

• They change the color of the water.

What happens to the food coloring when the Alka Seltzer tablets are added?

• It turns into a solid.

• It mixes with the water as bubbles form.

• It remains on top of the oil.

• It evaporates.